/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/Problem13_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:41:15,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:41:15,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:41:15,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:41:15,189 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 22:41:15,217 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:41:15,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:41:15,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:41:15,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:41:15,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:41:15,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:41:15,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:41:15,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:41:15,220 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:41:15,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:41:15,221 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:41:15,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:41:15,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:41:15,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:41:15,223 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:41:15,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:41:15,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:41:15,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:41:15,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:41:15,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:41:15,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:41:15,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:41:15,225 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:41:15,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:41:15,225 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:41:15,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:41:15,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:41:15,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:41:15,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:41:15,487 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:41:15,488 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:41:15,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2023-04-01 22:41:16,694 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:41:17,148 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:41:17,149 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2023-04-01 22:41:17,180 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a02de2c/d1ba94b06cae407aa59bf9b604d317f5/FLAG04c95abce [2023-04-01 22:41:17,196 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a02de2c/d1ba94b06cae407aa59bf9b604d317f5 [2023-04-01 22:41:17,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:41:17,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:41:17,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:41:17,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:41:17,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:41:17,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:41:17" (1/1) ... [2023-04-01 22:41:17,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ded2fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:17, skipping insertion in model container [2023-04-01 22:41:17,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:41:17" (1/1) ... [2023-04-01 22:41:17,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:41:17,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:41:17,587 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/Problem13_label24.c[4341,4354] [2023-04-01 22:41:18,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:41:18,351 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:41:18,379 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/Problem13_label24.c[4341,4354] [2023-04-01 22:41:18,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:41:18,826 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:41:18,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18 WrapperNode [2023-04-01 22:41:18,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:41:18,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:41:18,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:41:18,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:41:18,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:18,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:18,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:18,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:18,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:19,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:19,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:19,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:19,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:41:19,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:41:19,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:41:19,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:41:19,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (1/1) ... [2023-04-01 22:41:19,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:41:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:19,106 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 22:41:19,137 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 22:41:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:41:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:41:19,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:41:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:41:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:41:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:41:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:41:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:41:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:41:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:41:19,255 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:41:19,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:41:24,053 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:41:24,073 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:41:24,073 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:41:24,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:41:24 BoogieIcfgContainer [2023-04-01 22:41:24,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:41:24,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:41:24,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:41:24,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:41:24,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:41:17" (1/3) ... [2023-04-01 22:41:24,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3643987f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:41:24, skipping insertion in model container [2023-04-01 22:41:24,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:18" (2/3) ... [2023-04-01 22:41:24,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3643987f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:41:24, skipping insertion in model container [2023-04-01 22:41:24,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:41:24" (3/3) ... [2023-04-01 22:41:24,087 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2023-04-01 22:41:24,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:41:24,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:41:24,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:41:24,169 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;@7c98ecf0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:41:24,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:41:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:41:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-01 22:41:24,183 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:24,184 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, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:24,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:24,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1888607188, now seen corresponding path program 1 times [2023-04-01 22:41:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365955657] [2023-04-01 22:41:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:24,690 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 22:41:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365955657] [2023-04-01 22:41:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365955657] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:41:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:41:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584988005] [2023-04-01 22:41:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:24,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:41:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:41:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:41:24,733 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 22:41:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:33,140 INFO L93 Difference]: Finished difference Result 3970 states and 7414 transitions. [2023-04-01 22:41:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:41:33,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 35 [2023-04-01 22:41:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:33,170 INFO L225 Difference]: With dead ends: 3970 [2023-04-01 22:41:33,170 INFO L226 Difference]: Without dead ends: 2783 [2023-04-01 22:41:33,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:41:33,182 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 5709 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5250 mSolverCounterSat, 2383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5709 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2383 IncrementalHoareTripleChecker+Valid, 5250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:33,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5709 Valid, 348 Invalid, 7633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2383 Valid, 5250 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 22:41:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2023-04-01 22:41:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2758. [2023-04-01 22:41:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2718 states have (on average 1.599337748344371) internal successors, (4347), 2721 states have internal predecessors, (4347), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (52), 22 states have call predecessors, (52), 13 states have call successors, (52) [2023-04-01 22:41:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4413 transitions. [2023-04-01 22:41:33,412 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4413 transitions. Word has length 35 [2023-04-01 22:41:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:33,413 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 4413 transitions. [2023-04-01 22:41:33,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 22:41:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4413 transitions. [2023-04-01 22:41:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-01 22:41:33,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:33,419 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, 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] [2023-04-01 22:41:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:41:33,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:33,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash -171072708, now seen corresponding path program 1 times [2023-04-01 22:41:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921688997] [2023-04-01 22:41:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:33,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:33,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921688997] [2023-04-01 22:41:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921688997] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:33,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:41:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:41:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563590166] [2023-04-01 22:41:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:41:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:41:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:41:33,976 INFO L87 Difference]: Start difference. First operand 2758 states and 4413 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 22:41:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:41,355 INFO L93 Difference]: Finished difference Result 8172 states and 13340 transitions. [2023-04-01 22:41:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:41:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 125 [2023-04-01 22:41:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:41,393 INFO L225 Difference]: With dead ends: 8172 [2023-04-01 22:41:41,394 INFO L226 Difference]: Without dead ends: 5420 [2023-04-01 22:41:41,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:41:41,411 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 3388 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 7216 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 8292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 7216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3388 Valid, 792 Invalid, 8292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 7216 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 22:41:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2023-04-01 22:41:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 5337. [2023-04-01 22:41:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5337 states, 5221 states have (on average 1.4443593181382877) internal successors, (7541), 5243 states have internal predecessors, (7541), 26 states have call successors, (26), 26 states have call predecessors, (26), 89 states have return successors, (274), 67 states have call predecessors, (274), 25 states have call successors, (274) [2023-04-01 22:41:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 7841 transitions. [2023-04-01 22:41:41,580 INFO L78 Accepts]: Start accepts. Automaton has 5337 states and 7841 transitions. Word has length 125 [2023-04-01 22:41:41,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:41,581 INFO L495 AbstractCegarLoop]: Abstraction has 5337 states and 7841 transitions. [2023-04-01 22:41:41,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 22:41:41,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5337 states and 7841 transitions. [2023-04-01 22:41:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 22:41:41,594 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:41,594 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, 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] [2023-04-01 22:41:41,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:41:41,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:41,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash 950324535, now seen corresponding path program 1 times [2023-04-01 22:41:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908049902] [2023-04-01 22:41:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:41,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:41:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908049902] [2023-04-01 22:41:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908049902] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055666121] [2023-04-01 22:41:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:42,041 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 22:41:42,065 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 22:41:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:42,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:41:42,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:42,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:41:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055666121] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:41:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 14 [2023-04-01 22:41:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523541308] [2023-04-01 22:41:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:41:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:41:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:41:43,034 INFO L87 Difference]: Start difference. First operand 5337 states and 7841 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 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 22:41:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:50,656 INFO L93 Difference]: Finished difference Result 20881 states and 32206 transitions. [2023-04-01 22:41:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:41:50,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 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 135 [2023-04-01 22:41:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:50,747 INFO L225 Difference]: With dead ends: 20881 [2023-04-01 22:41:50,748 INFO L226 Difference]: Without dead ends: 15550 [2023-04-01 22:41:50,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:41:50,767 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 5090 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 4550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5090 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4550 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:50,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5090 Valid, 378 Invalid, 9690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4550 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:41:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15550 states. [2023-04-01 22:41:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15550 to 15422. [2023-04-01 22:41:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15422 states, 15065 states have (on average 1.406173249253236) internal successors, (21184), 15134 states have internal predecessors, (21184), 74 states have call successors, (74), 74 states have call predecessors, (74), 282 states have return successors, (2012), 213 states have call predecessors, (2012), 73 states have call successors, (2012) [2023-04-01 22:41:51,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15422 states to 15422 states and 23270 transitions. [2023-04-01 22:41:51,325 INFO L78 Accepts]: Start accepts. Automaton has 15422 states and 23270 transitions. Word has length 135 [2023-04-01 22:41:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:51,326 INFO L495 AbstractCegarLoop]: Abstraction has 15422 states and 23270 transitions. [2023-04-01 22:41:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 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 22:41:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 15422 states and 23270 transitions. [2023-04-01 22:41:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 22:41:51,331 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:51,332 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, 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] [2023-04-01 22:41:51,341 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 22:41:51,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:51,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:51,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1691118059, now seen corresponding path program 1 times [2023-04-01 22:41:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062700369] [2023-04-01 22:41:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:51,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:51,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062700369] [2023-04-01 22:41:51,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062700369] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243027881] [2023-04-01 22:41:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:51,825 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 22:41:51,828 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 22:41:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:51,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:41:51,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:51,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:41:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243027881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:41:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:41:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359981659] [2023-04-01 22:41:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:51,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:41:51,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:41:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:51,970 INFO L87 Difference]: Start difference. First operand 15422 states and 23270 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 22:41:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:55,259 INFO L93 Difference]: Finished difference Result 45607 states and 72149 transitions. [2023-04-01 22:41:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:41:55,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 155 [2023-04-01 22:41:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:55,398 INFO L225 Difference]: With dead ends: 45607 [2023-04-01 22:41:55,398 INFO L226 Difference]: Without dead ends: 30191 [2023-04-01 22:41:55,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 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 22:41:55,440 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 1116 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:55,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1657 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:41:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30191 states. [2023-04-01 22:41:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30191 to 30182. [2023-04-01 22:41:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30182 states, 29564 states have (on average 1.3516438912190503) internal successors, (39960), 29676 states have internal predecessors, (39960), 146 states have call successors, (146), 146 states have call predecessors, (146), 471 states have return successors, (5754), 359 states have call predecessors, (5754), 145 states have call successors, (5754) [2023-04-01 22:41:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30182 states to 30182 states and 45860 transitions. [2023-04-01 22:41:56,323 INFO L78 Accepts]: Start accepts. Automaton has 30182 states and 45860 transitions. Word has length 155 [2023-04-01 22:41:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:56,327 INFO L495 AbstractCegarLoop]: Abstraction has 30182 states and 45860 transitions. [2023-04-01 22:41:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 22:41:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30182 states and 45860 transitions. [2023-04-01 22:41:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-04-01 22:41:56,336 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:56,337 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, 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] [2023-04-01 22:41:56,345 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 22:41:56,542 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,SelfDestructingSolverStorable3 [2023-04-01 22:41:56,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:56,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 391269853, now seen corresponding path program 1 times [2023-04-01 22:41:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130492239] [2023-04-01 22:41:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:56,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130492239] [2023-04-01 22:41:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130492239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:56,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:41:56,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:41:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847527102] [2023-04-01 22:41:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:56,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:41:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:41:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:56,976 INFO L87 Difference]: Start difference. First operand 30182 states and 45860 transitions. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 4 states have internal predecessors, (242), 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 22:42:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:03,889 INFO L93 Difference]: Finished difference Result 79222 states and 121766 transitions. [2023-04-01 22:42:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:42:03,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 4 states have internal predecessors, (242), 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 248 [2023-04-01 22:42:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:04,135 INFO L225 Difference]: With dead ends: 79222 [2023-04-01 22:42:04,135 INFO L226 Difference]: Without dead ends: 49046 [2023-04-01 22:42:04,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:42:04,200 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 5962 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5962 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 6738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:04,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5962 Valid, 422 Invalid, 6738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 5939 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:42:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49046 states. [2023-04-01 22:42:05,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49046 to 48962. [2023-04-01 22:42:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48962 states, 48063 states have (on average 1.3360173106131537) internal successors, (64213), 48215 states have internal predecessors, (64213), 238 states have call successors, (238), 238 states have call predecessors, (238), 660 states have return successors, (10232), 508 states have call predecessors, (10232), 237 states have call successors, (10232) [2023-04-01 22:42:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48962 states to 48962 states and 74683 transitions. [2023-04-01 22:42:05,368 INFO L78 Accepts]: Start accepts. Automaton has 48962 states and 74683 transitions. Word has length 248 [2023-04-01 22:42:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:05,368 INFO L495 AbstractCegarLoop]: Abstraction has 48962 states and 74683 transitions. [2023-04-01 22:42:05,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 4 states have internal predecessors, (242), 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 22:42:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 48962 states and 74683 transitions. [2023-04-01 22:42:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-04-01 22:42:05,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:05,379 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:05,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:42:05,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:05,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 185646731, now seen corresponding path program 1 times [2023-04-01 22:42:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094045226] [2023-04-01 22:42:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:05,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-01 22:42:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:42:06,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094045226] [2023-04-01 22:42:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094045226] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353930942] [2023-04-01 22:42:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:06,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:06,356 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 22:42:06,359 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 22:42:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:06,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:42:06,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-01 22:42:06,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:06,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353930942] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:06,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:06,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 22:42:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604246358] [2023-04-01 22:42:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:42:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:42:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:42:06,629 INFO L87 Difference]: Start difference. First operand 48962 states and 74683 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 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 22:42:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:11,221 INFO L93 Difference]: Finished difference Result 98334 states and 154240 transitions. [2023-04-01 22:42:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:42:11,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 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 265 [2023-04-01 22:42:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:11,404 INFO L225 Difference]: With dead ends: 98334 [2023-04-01 22:42:11,404 INFO L226 Difference]: Without dead ends: 49378 [2023-04-01 22:42:11,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:42:11,467 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 3135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 4187 mSolverCounterSat, 1379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1379 IncrementalHoareTripleChecker+Valid, 4187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:11,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3135 Valid, 632 Invalid, 5566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1379 Valid, 4187 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 22:42:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49378 states. [2023-04-01 22:42:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49378 to 49220. [2023-04-01 22:42:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49220 states, 48218 states have (on average 1.201667427101912) internal successors, (57942), 48407 states have internal predecessors, (57942), 238 states have call successors, (238), 238 states have call predecessors, (238), 763 states have return successors, (7932), 574 states have call predecessors, (7932), 237 states have call successors, (7932) [2023-04-01 22:42:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49220 states to 49220 states and 66112 transitions. [2023-04-01 22:42:12,630 INFO L78 Accepts]: Start accepts. Automaton has 49220 states and 66112 transitions. Word has length 265 [2023-04-01 22:42:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:12,630 INFO L495 AbstractCegarLoop]: Abstraction has 49220 states and 66112 transitions. [2023-04-01 22:42:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 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 22:42:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 49220 states and 66112 transitions. [2023-04-01 22:42:12,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-04-01 22:42:12,637 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:12,637 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:42:12,645 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 22:42:12,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:12,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:12,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1128325823, now seen corresponding path program 1 times [2023-04-01 22:42:12,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:12,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212060198] [2023-04-01 22:42:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:42:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:42:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-04-01 22:42:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:13,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212060198] [2023-04-01 22:42:13,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212060198] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991348073] [2023-04-01 22:42:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:13,285 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 22:42:13,288 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 22:42:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:13,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:42:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-04-01 22:42:13,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991348073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:13,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:13,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:42:13,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979934938] [2023-04-01 22:42:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:42:13,465 INFO L87 Difference]: Start difference. First operand 49220 states and 66112 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 22:42:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:17,643 INFO L93 Difference]: Finished difference Result 137543 states and 193125 transitions. [2023-04-01 22:42:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:17,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 280 [2023-04-01 22:42:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:18,134 INFO L225 Difference]: With dead ends: 137543 [2023-04-01 22:42:18,135 INFO L226 Difference]: Without dead ends: 88329 [2023-04-01 22:42:18,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:42:18,203 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 915 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:18,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1980 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:42:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88329 states. [2023-04-01 22:42:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88329 to 80275. [2023-04-01 22:42:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80275 states, 78754 states have (on average 1.1754323589912894) internal successors, (92570), 79023 states have internal predecessors, (92570), 390 states have call successors, (390), 390 states have call predecessors, (390), 1130 states have return successors, (15865), 861 states have call predecessors, (15865), 389 states have call successors, (15865) [2023-04-01 22:42:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80275 states to 80275 states and 108825 transitions. [2023-04-01 22:42:20,152 INFO L78 Accepts]: Start accepts. Automaton has 80275 states and 108825 transitions. Word has length 280 [2023-04-01 22:42:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 80275 states and 108825 transitions. [2023-04-01 22:42:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 22:42:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 80275 states and 108825 transitions. [2023-04-01 22:42:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-04-01 22:42:20,164 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:20,164 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:20,173 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 22:42:20,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:20,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:20,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1091314435, now seen corresponding path program 1 times [2023-04-01 22:42:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:20,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84880306] [2023-04-01 22:42:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:42:21,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84880306] [2023-04-01 22:42:21,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84880306] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26140790] [2023-04-01 22:42:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:21,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:21,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:21,062 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 22:42:21,086 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 22:42:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:21,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:21,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:21,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:21,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26140790] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:21,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:21,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:42:21,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784285462] [2023-04-01 22:42:21,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:21,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:42:21,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:42:21,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:42:21,897 INFO L87 Difference]: Start difference. First operand 80275 states and 108825 transitions. Second operand has 11 states, 11 states have (on average 55.09090909090909) internal successors, (606), 9 states have internal predecessors, (606), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:28,113 INFO L93 Difference]: Finished difference Result 160712 states and 225265 transitions. [2023-04-01 22:42:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:42:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 55.09090909090909) internal successors, (606), 9 states have internal predecessors, (606), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 309 [2023-04-01 22:42:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:28,442 INFO L225 Difference]: With dead ends: 160712 [2023-04-01 22:42:28,442 INFO L226 Difference]: Without dead ends: 81246 [2023-04-01 22:42:28,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:42:28,679 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 6129 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 6318 mSolverCounterSat, 1467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6129 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 7785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1467 IncrementalHoareTripleChecker+Valid, 6318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:28,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6129 Valid, 627 Invalid, 7785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1467 Valid, 6318 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:42:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81246 states. [2023-04-01 22:42:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81246 to 80978. [2023-04-01 22:42:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80978 states, 79176 states have (on average 1.122208750126301) internal successors, (88852), 79573 states have internal predecessors, (88852), 390 states have call successors, (390), 390 states have call predecessors, (390), 1411 states have return successors, (13190), 1014 states have call predecessors, (13190), 389 states have call successors, (13190) [2023-04-01 22:42:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80978 states to 80978 states and 102432 transitions. [2023-04-01 22:42:30,244 INFO L78 Accepts]: Start accepts. Automaton has 80978 states and 102432 transitions. Word has length 309 [2023-04-01 22:42:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:30,244 INFO L495 AbstractCegarLoop]: Abstraction has 80978 states and 102432 transitions. [2023-04-01 22:42:30,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.09090909090909) internal successors, (606), 9 states have internal predecessors, (606), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 80978 states and 102432 transitions. [2023-04-01 22:42:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-04-01 22:42:30,266 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:30,266 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2023-04-01 22:42:30,274 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 22:42:30,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:30,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:30,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1245941624, now seen corresponding path program 1 times [2023-04-01 22:42:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204248276] [2023-04-01 22:42:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:42:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 89 proven. 284 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:42:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204248276] [2023-04-01 22:42:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204248276] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478111231] [2023-04-01 22:42:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:31,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:31,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:31,803 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 22:42:31,830 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 22:42:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:31,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:31,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 22:42:32,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478111231] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 22:42:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713103043] [2023-04-01 22:42:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:42:32,048 INFO L87 Difference]: Start difference. First operand 80978 states and 102432 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 22:42:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:36,338 INFO L93 Difference]: Finished difference Result 209665 states and 269594 transitions. [2023-04-01 22:42:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 398 [2023-04-01 22:42:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:36,819 INFO L225 Difference]: With dead ends: 209665 [2023-04-01 22:42:36,819 INFO L226 Difference]: Without dead ends: 129496 [2023-04-01 22:42:36,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:42:36,875 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 996 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:36,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 583 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:42:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129496 states. [2023-04-01 22:42:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129496 to 107803. [2023-04-01 22:42:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107803 states, 105607 states have (on average 1.1154658308634844) internal successors, (117801), 106067 states have internal predecessors, (117801), 522 states have call successors, (522), 522 states have call predecessors, (522), 1673 states have return successors, (17863), 1213 states have call predecessors, (17863), 521 states have call successors, (17863) [2023-04-01 22:42:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107803 states to 107803 states and 136186 transitions. [2023-04-01 22:42:38,999 INFO L78 Accepts]: Start accepts. Automaton has 107803 states and 136186 transitions. Word has length 398 [2023-04-01 22:42:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:39,000 INFO L495 AbstractCegarLoop]: Abstraction has 107803 states and 136186 transitions. [2023-04-01 22:42:39,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 22:42:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 107803 states and 136186 transitions. [2023-04-01 22:42:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-04-01 22:42:39,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:39,024 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:42:39,033 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 22:42:39,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:39,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:39,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash -878061532, now seen corresponding path program 1 times [2023-04-01 22:42:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437895579] [2023-04-01 22:42:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:42:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 89 proven. 338 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:42:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437895579] [2023-04-01 22:42:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437895579] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571970205] [2023-04-01 22:42:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:40,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:40,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:40,549 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 22:42:40,552 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 22:42:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:40,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:40,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-04-01 22:42:40,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-04-01 22:42:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571970205] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:41,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 22:42:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971980412] [2023-04-01 22:42:41,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:41,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:42:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:42:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:42:41,439 INFO L87 Difference]: Start difference. First operand 107803 states and 136186 transitions. Second operand has 15 states, 15 states have (on average 50.53333333333333) internal successors, (758), 13 states have internal predecessors, (758), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 22:43:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:00,587 INFO L93 Difference]: Finished difference Result 337934 states and 438891 transitions. [2023-04-01 22:43:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-04-01 22:43:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 50.53333333333333) internal successors, (758), 13 states have internal predecessors, (758), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 437 [2023-04-01 22:43:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:01,406 INFO L225 Difference]: With dead ends: 337934 [2023-04-01 22:43:01,406 INFO L226 Difference]: Without dead ends: 230940 [2023-04-01 22:43:01,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 954 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3734 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1277, Invalid=9229, Unknown=0, NotChecked=0, Total=10506 [2023-04-01 22:43:01,503 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 27555 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 18615 mSolverCounterSat, 6027 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27565 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 24642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6027 IncrementalHoareTripleChecker+Valid, 18615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:01,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27565 Valid, 2195 Invalid, 24642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6027 Valid, 18615 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-04-01 22:43:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230940 states. [2023-04-01 22:43:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230940 to 226765. [2023-04-01 22:43:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226765 states, 222740 states have (on average 1.1015444015444016) internal successors, (245358), 223511 states have internal predecessors, (245358), 1134 states have call successors, (1134), 1106 states have call predecessors, (1134), 2890 states have return successors, (41793), 2147 states have call predecessors, (41793), 1133 states have call successors, (41793) [2023-04-01 22:43:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226765 states to 226765 states and 288285 transitions. [2023-04-01 22:43:06,442 INFO L78 Accepts]: Start accepts. Automaton has 226765 states and 288285 transitions. Word has length 437 [2023-04-01 22:43:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:06,442 INFO L495 AbstractCegarLoop]: Abstraction has 226765 states and 288285 transitions. [2023-04-01 22:43:06,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.53333333333333) internal successors, (758), 13 states have internal predecessors, (758), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 22:43:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 226765 states and 288285 transitions. [2023-04-01 22:43:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-04-01 22:43:06,478 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:06,479 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:06,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:43:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:06,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:06,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -508194416, now seen corresponding path program 1 times [2023-04-01 22:43:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212171845] [2023-04-01 22:43:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:43:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-01 22:43:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:08,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-04-01 22:43:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 162 proven. 350 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-01 22:43:08,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212171845] [2023-04-01 22:43:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212171845] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:43:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778073132] [2023-04-01 22:43:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:08,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:08,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:08,431 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 22:43:08,434 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 22:43:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:08,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:43:08,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:43:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-04-01 22:43:09,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:43:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 124 proven. 475 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 22:43:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778073132] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:43:09,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:43:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 18 [2023-04-01 22:43:09,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381982368] [2023-04-01 22:43:09,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:43:09,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:43:09,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:43:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:43:09,792 INFO L87 Difference]: Start difference. First operand 226765 states and 288285 transitions. Second operand has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:43:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:34,531 INFO L93 Difference]: Finished difference Result 593068 states and 795572 transitions. [2023-04-01 22:43:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-01 22:43:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 499 [2023-04-01 22:43:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:36,363 INFO L225 Difference]: With dead ends: 593068 [2023-04-01 22:43:36,363 INFO L226 Difference]: Without dead ends: 367112 [2023-04-01 22:43:36,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1035 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=905, Invalid=2755, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 22:43:36,600 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 18762 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 20186 mSolverCounterSat, 5966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18765 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 26152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5966 IncrementalHoareTripleChecker+Valid, 20186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:36,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18765 Valid, 1360 Invalid, 26152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5966 Valid, 20186 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-04-01 22:43:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367112 states. [2023-04-01 22:43:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367112 to 349585. [2023-04-01 22:43:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349585 states, 343752 states have (on average 1.0933463659847797) internal successors, (375840), 344827 states have internal predecessors, (375840), 1746 states have call successors, (1746), 1710 states have call predecessors, (1746), 4086 states have return successors, (66543), 3047 states have call predecessors, (66543), 1745 states have call successors, (66543) [2023-04-01 22:43:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349585 states to 349585 states and 444129 transitions. [2023-04-01 22:43:45,940 INFO L78 Accepts]: Start accepts. Automaton has 349585 states and 444129 transitions. Word has length 499 [2023-04-01 22:43:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:45,940 INFO L495 AbstractCegarLoop]: Abstraction has 349585 states and 444129 transitions. [2023-04-01 22:43:45,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:43:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 349585 states and 444129 transitions. [2023-04-01 22:43:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-04-01 22:43:45,965 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:45,966 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:45,971 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 22:43:46,167 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,SelfDestructingSolverStorable10 [2023-04-01 22:43:46,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:46,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1508873414, now seen corresponding path program 1 times [2023-04-01 22:43:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638497672] [2023-04-01 22:43:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:43:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:47,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:43:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-04-01 22:43:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 210 proven. 205 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-04-01 22:43:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638497672] [2023-04-01 22:43:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638497672] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:43:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763264040] [2023-04-01 22:43:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:47,257 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 22:43:47,258 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 22:43:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:47,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:43:47,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:43:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 22:43:47,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:43:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 273 proven. 76 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-04-01 22:43:47,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763264040] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:43:47,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:43:47,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 22:43:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716854520] [2023-04-01 22:43:47,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:43:47,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:43:47,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:43:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:43:47,916 INFO L87 Difference]: Start difference. First operand 349585 states and 444129 transitions. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:44:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:07,610 INFO L93 Difference]: Finished difference Result 834716 states and 1072010 transitions. [2023-04-01 22:44:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 22:44:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 503 [2023-04-01 22:44:07,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:10,349 INFO L225 Difference]: With dead ends: 834716 [2023-04-01 22:44:10,349 INFO L226 Difference]: Without dead ends: 485940 [2023-04-01 22:44:11,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1029 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 22:44:11,021 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 8456 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 17482 mSolverCounterSat, 2457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8456 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 19939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2457 IncrementalHoareTripleChecker+Valid, 17482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:11,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8456 Valid, 1188 Invalid, 19939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2457 Valid, 17482 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-04-01 22:44:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485940 states. [2023-04-01 22:44:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485940 to 474365. [2023-04-01 22:44:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474365 states, 466889 states have (on average 1.0857805602616468) internal successors, (506939), 468156 states have internal predecessors, (506939), 2367 states have call successors, (2367), 2326 states have call predecessors, (2367), 5108 states have return successors, (87363), 3882 states have call predecessors, (87363), 2366 states have call successors, (87363) [2023-04-01 22:44:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474365 states to 474365 states and 596669 transitions. [2023-04-01 22:44:23,063 INFO L78 Accepts]: Start accepts. Automaton has 474365 states and 596669 transitions. Word has length 503 [2023-04-01 22:44:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:23,064 INFO L495 AbstractCegarLoop]: Abstraction has 474365 states and 596669 transitions. [2023-04-01 22:44:23,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:44:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 474365 states and 596669 transitions. [2023-04-01 22:44:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-04-01 22:44:23,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:23,149 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:23,159 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 22:44:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:23,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:23,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -653902040, now seen corresponding path program 1 times [2023-04-01 22:44:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776143325] [2023-04-01 22:44:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:44:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-01 22:44:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:44:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2023-04-01 22:44:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 249 proven. 347 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-04-01 22:44:24,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:24,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776143325] [2023-04-01 22:44:24,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776143325] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:24,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507291953] [2023-04-01 22:44:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:24,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:24,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:24,163 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 22:44:24,166 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 22:44:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:24,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:24,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 795 proven. 2 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-04-01 22:44:24,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 250 proven. 350 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2023-04-01 22:44:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507291953] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:24,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:24,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:44:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526772358] [2023-04-01 22:44:24,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:44:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:44:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:44:24,999 INFO L87 Difference]: Start difference. First operand 474365 states and 596669 transitions. Second operand has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 9 states have internal predecessors, (735), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7)