/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/Problem12_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:22:25,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:22:25,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:22:25,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:22:25,874 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 [2023-03-30 23:22:25,889 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:22:25,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:22:25,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:22:25,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:22:25,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:22:25,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:22:25,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:22:25,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:22:25,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:22:25,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:22:25,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:22:25,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:22:25,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:22:25,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:22:25,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:22:25,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:22:25,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:22:25,894 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:22:25,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:22:26,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:22:26,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:22:26,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:22:26,121 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:22:26,122 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:22:26,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label56.c [2023-03-30 23:22:27,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:22:27,554 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:22:27,555 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label56.c [2023-03-30 23:22:27,580 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79245801f/f165a5b5501f4ff8bd2c655e427aae07/FLAGc02a3ea55 [2023-03-30 23:22:27,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79245801f/f165a5b5501f4ff8bd2c655e427aae07 [2023-03-30 23:22:27,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:22:27,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:22:27,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:22:27,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:22:27,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:22:27,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:22:27" (1/1) ... [2023-03-30 23:22:27,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e952118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:27, skipping insertion in model container [2023-03-30 23:22:27,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:22:27" (1/1) ... [2023-03-30 23:22:27,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:22:27,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:22:27,924 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/Problem12_label56.c[6959,6972] [2023-03-30 23:22:28,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:22:28,454 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:22:28,479 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/Problem12_label56.c[6959,6972] [2023-03-30 23:22:28,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:22:28,769 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:22:28,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28 WrapperNode [2023-03-30 23:22:28,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:22:28,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:22:28,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:22:28,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:22:28,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:22:28,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:22:28,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:22:28,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:22:28,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (1/1) ... [2023-03-30 23:22:28,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:22:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:22:29,002 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) [2023-03-30 23:22:29,028 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 [2023-03-30 23:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:22:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:22:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:22:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:22:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:22:29,172 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:22:29,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:22:32,115 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:22:32,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:22:32,124 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:22:32,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:22:32 BoogieIcfgContainer [2023-03-30 23:22:32,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:22:32,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:22:32,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:22:32,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:22:32,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:22:27" (1/3) ... [2023-03-30 23:22:32,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fdf2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:22:32, skipping insertion in model container [2023-03-30 23:22:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:22:28" (2/3) ... [2023-03-30 23:22:32,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fdf2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:22:32, skipping insertion in model container [2023-03-30 23:22:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:22:32" (3/3) ... [2023-03-30 23:22:32,132 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label56.c [2023-03-30 23:22:32,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:22:32,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:22:32,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:22:32,195 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;@467c64b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:22:32,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:22:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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) [2023-03-30 23:22:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-03-30 23:22:32,208 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:22:32,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:22:32,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:22:32,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:22:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash -192694555, now seen corresponding path program 1 times [2023-03-30 23:22:32,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:22:32,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497051550] [2023-03-30 23:22:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:32,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:22:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:22:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:22:32,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:22:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497051550] [2023-03-30 23:22:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497051550] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:22:32,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:22:32,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:22:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816487948] [2023-03-30 23:22:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:22:32,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:22:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:22:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:22:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:22:32,764 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-03-30 23:22:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:22:39,344 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2023-03-30 23:22:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:22:39,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 62 [2023-03-30 23:22:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:22:39,400 INFO L225 Difference]: With dead ends: 3253 [2023-03-30 23:22:39,400 INFO L226 Difference]: Without dead ends: 2346 [2023-03-30 23:22:39,412 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 [2023-03-30 23:22:39,425 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4971 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 1969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4971 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1969 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:22:39,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4971 Valid, 58 Invalid, 6288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1969 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-03-30 23:22:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2023-03-30 23:22:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2023-03-30 23:22:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2295 states have (on average 1.6435729847494553) internal successors, (3772), 2297 states have internal predecessors, (3772), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (48), 19 states have call predecessors, (48), 13 states have call successors, (48) [2023-03-30 23:22:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2023-03-30 23:22:39,618 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 62 [2023-03-30 23:22:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:22:39,620 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2023-03-30 23:22:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-03-30 23:22:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2023-03-30 23:22:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-03-30 23:22:39,630 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:22:39,630 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, 2, 2, 2, 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] [2023-03-30 23:22:39,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:22:39,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:22:39,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:22:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2147207368, now seen corresponding path program 1 times [2023-03-30 23:22:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:22:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519878057] [2023-03-30 23:22:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:22:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:22:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:22:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:22:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:22:40,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519878057] [2023-03-30 23:22:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519878057] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:22:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:22:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:22:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896335748] [2023-03-30 23:22:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:22:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:22:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:22:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:22:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:22:40,063 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-03-30 23:22:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:22:47,111 INFO L93 Difference]: Finished difference Result 9466 states and 16032 transitions. [2023-03-30 23:22:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-30 23:22:47,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 140 [2023-03-30 23:22:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:22:47,139 INFO L225 Difference]: With dead ends: 9466 [2023-03-30 23:22:47,139 INFO L226 Difference]: Without dead ends: 7141 [2023-03-30 23:22:47,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:22:47,145 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4325 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6937 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 9078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 6937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:22:47,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 129 Invalid, 9078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2141 Valid, 6937 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-03-30 23:22:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2023-03-30 23:22:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 7092. [2023-03-30 23:22:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 6949 states have (on average 1.4459634479781263) internal successors, (10048), 6969 states have internal predecessors, (10048), 38 states have call successors, (38), 38 states have call predecessors, (38), 104 states have return successors, (507), 84 states have call predecessors, (507), 37 states have call successors, (507) [2023-03-30 23:22:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 10593 transitions. [2023-03-30 23:22:47,309 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 10593 transitions. Word has length 140 [2023-03-30 23:22:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:22:47,310 INFO L495 AbstractCegarLoop]: Abstraction has 7092 states and 10593 transitions. [2023-03-30 23:22:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-03-30 23:22:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 10593 transitions. [2023-03-30 23:22:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-30 23:22:47,316 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:22:47,317 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, 2, 2, 2, 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] [2023-03-30 23:22:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:22:47,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:22:47,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:22:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1814643624, now seen corresponding path program 1 times [2023-03-30 23:22:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:22:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942327776] [2023-03-30 23:22:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:22:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:22:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:22:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:22:47,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:22:47,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942327776] [2023-03-30 23:22:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942327776] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:22:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:22:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:22:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082917463] [2023-03-30 23:22:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:22:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:22:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:22:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:22:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:22:47,711 INFO L87 Difference]: Start difference. First operand 7092 states and 10593 transitions. Second operand has 8 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-03-30 23:22:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:22:52,062 INFO L93 Difference]: Finished difference Result 16669 states and 24832 transitions. [2023-03-30 23:22:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:22:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 156 [2023-03-30 23:22:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:22:52,095 INFO L225 Difference]: With dead ends: 16669 [2023-03-30 23:22:52,096 INFO L226 Difference]: Without dead ends: 9583 [2023-03-30 23:22:52,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:22:52,110 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6381 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 5754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:22:52,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 122 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-03-30 23:22:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2023-03-30 23:22:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 9520. [2023-03-30 23:22:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9520 states, 9305 states have (on average 1.3279957012358947) internal successors, (12357), 9342 states have internal predecessors, (12357), 50 states have call successors, (50), 50 states have call predecessors, (50), 164 states have return successors, (788), 127 states have call predecessors, (788), 49 states have call successors, (788) [2023-03-30 23:22:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 13195 transitions. [2023-03-30 23:22:52,326 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 13195 transitions. Word has length 156 [2023-03-30 23:22:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:22:52,327 INFO L495 AbstractCegarLoop]: Abstraction has 9520 states and 13195 transitions. [2023-03-30 23:22:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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) [2023-03-30 23:22:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 13195 transitions. [2023-03-30 23:22:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-03-30 23:22:52,329 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:22:52,329 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, 2, 2, 2, 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] [2023-03-30 23:22:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:22:52,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:22:52,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:22:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash 40712967, now seen corresponding path program 1 times [2023-03-30 23:22:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:22:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577142845] [2023-03-30 23:22:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:22:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:22:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:22:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:22:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:22:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577142845] [2023-03-30 23:22:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577142845] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:22:52,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:22:52,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:22:52,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043053009] [2023-03-30 23:22:52,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:22:52,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:22:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:22:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:22:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:22:52,646 INFO L87 Difference]: Start difference. First operand 9520 states and 13195 transitions. Second operand has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-03-30 23:22:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:22:58,441 INFO L93 Difference]: Finished difference Result 29189 states and 42780 transitions. [2023-03-30 23:22:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:22:58,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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 165 [2023-03-30 23:22:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:22:58,498 INFO L225 Difference]: With dead ends: 29189 [2023-03-30 23:22:58,498 INFO L226 Difference]: Without dead ends: 19675 [2023-03-30 23:22:58,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:22:58,519 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2528 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 6252 mSolverCounterSat, 1142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 6252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:22:58,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 151 Invalid, 7394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1142 Valid, 6252 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-03-30 23:22:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19675 states. [2023-03-30 23:22:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19675 to 19456. [2023-03-30 23:22:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19456 states, 18864 states have (on average 1.2161789652247668) internal successors, (22942), 19012 states have internal predecessors, (22942), 98 states have call successors, (98), 98 states have call predecessors, (98), 493 states have return successors, (2765), 345 states have call predecessors, (2765), 97 states have call successors, (2765) [2023-03-30 23:22:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19456 states to 19456 states and 25805 transitions. [2023-03-30 23:22:58,875 INFO L78 Accepts]: Start accepts. Automaton has 19456 states and 25805 transitions. Word has length 165 [2023-03-30 23:22:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:22:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 19456 states and 25805 transitions. [2023-03-30 23:22:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-03-30 23:22:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19456 states and 25805 transitions. [2023-03-30 23:22:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-03-30 23:22:58,879 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:22:58,879 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:22:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:22:58,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:22:58,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:22:58,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1170272802, now seen corresponding path program 1 times [2023-03-30 23:22:58,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:22:58,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48167366] [2023-03-30 23:22:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:22:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:22:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:22:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-30 23:22:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 110 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:22:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:22:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48167366] [2023-03-30 23:22:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48167366] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:22:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836475780] [2023-03-30 23:22:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:22:59,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:22:59,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:22:59,181 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) [2023-03-30 23:22:59,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:22:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:22:59,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:22:59,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:22:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-03-30 23:22:59,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:22:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836475780] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:22:59,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:22:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-03-30 23:22:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020507192] [2023-03-30 23:22:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:22:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:22:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:22:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:22:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:22:59,490 INFO L87 Difference]: Start difference. First operand 19456 states and 25805 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-03-30 23:23:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:03,562 INFO L93 Difference]: Finished difference Result 58115 states and 80059 transitions. [2023-03-30 23:23:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 23:23:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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 233 [2023-03-30 23:23:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:03,656 INFO L225 Difference]: With dead ends: 58115 [2023-03-30 23:23:03,657 INFO L226 Difference]: Without dead ends: 38665 [2023-03-30 23:23:03,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:23:03,813 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2837 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:03,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 92 Invalid, 5023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-30 23:23:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38665 states. [2023-03-30 23:23:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38665 to 32377. [2023-03-30 23:23:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32377 states, 31408 states have (on average 1.1925942435048396) internal successors, (37457), 31654 states have internal predecessors, (37457), 162 states have call successors, (162), 162 states have call predecessors, (162), 806 states have return successors, (5026), 560 states have call predecessors, (5026), 161 states have call successors, (5026) [2023-03-30 23:23:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32377 states to 32377 states and 42645 transitions. [2023-03-30 23:23:04,408 INFO L78 Accepts]: Start accepts. Automaton has 32377 states and 42645 transitions. Word has length 233 [2023-03-30 23:23:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:04,409 INFO L495 AbstractCegarLoop]: Abstraction has 32377 states and 42645 transitions. [2023-03-30 23:23:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-03-30 23:23:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 32377 states and 42645 transitions. [2023-03-30 23:23:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-03-30 23:23:04,412 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:04,412 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:04,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:23:04,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:04,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:04,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2126580428, now seen corresponding path program 1 times [2023-03-30 23:23:04,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:04,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781583345] [2023-03-30 23:23:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:04,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:04,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-30 23:23:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:23:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781583345] [2023-03-30 23:23:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781583345] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:23:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623756827] [2023-03-30 23:23:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:04,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:04,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:04,882 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) [2023-03-30 23:23:04,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:23:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:04,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:23:05,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:23:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:23:05,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:23:05,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623756827] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:05,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:23:05,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:23:05,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509008899] [2023-03-30 23:23:05,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:23:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:23:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:23:05,081 INFO L87 Difference]: Start difference. First operand 32377 states and 42645 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2023-03-30 23:23:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:08,464 INFO L93 Difference]: Finished difference Result 93629 states and 127399 transitions. [2023-03-30 23:23:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:23:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 283 [2023-03-30 23:23:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:08,620 INFO L225 Difference]: With dead ends: 93629 [2023-03-30 23:23:08,621 INFO L226 Difference]: Without dead ends: 61258 [2023-03-30 23:23:08,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:23:08,658 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 744 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 3158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:08,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 207 Invalid, 3158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-30 23:23:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61258 states. [2023-03-30 23:23:09,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61258 to 58164. [2023-03-30 23:23:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58164 states, 56743 states have (on average 1.190772430079481) internal successors, (67568), 57077 states have internal predecessors, (67568), 294 states have call successors, (294), 294 states have call predecessors, (294), 1126 states have return successors, (11477), 792 states have call predecessors, (11477), 293 states have call successors, (11477) [2023-03-30 23:23:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58164 states to 58164 states and 79339 transitions. [2023-03-30 23:23:09,712 INFO L78 Accepts]: Start accepts. Automaton has 58164 states and 79339 transitions. Word has length 283 [2023-03-30 23:23:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:09,712 INFO L495 AbstractCegarLoop]: Abstraction has 58164 states and 79339 transitions. [2023-03-30 23:23:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2023-03-30 23:23:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 58164 states and 79339 transitions. [2023-03-30 23:23:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-03-30 23:23:09,718 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:09,718 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:09,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 23:23:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-30 23:23:09,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:09,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1358463647, now seen corresponding path program 1 times [2023-03-30 23:23:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374087954] [2023-03-30 23:23:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-30 23:23:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:23:10,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374087954] [2023-03-30 23:23:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374087954] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:23:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877582924] [2023-03-30 23:23:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:10,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:10,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:10,691 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) [2023-03-30 23:23:10,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:23:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:10,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:23:10,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:23:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:10,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:23:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:11,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877582924] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:23:11,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:23:11,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:23:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599252385] [2023-03-30 23:23:11,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:23:11,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:23:11,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:23:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:23:11,312 INFO L87 Difference]: Start difference. First operand 58164 states and 79339 transitions. Second operand has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 10 states have internal predecessors, (581), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:23:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:20,560 INFO L93 Difference]: Finished difference Result 137711 states and 193036 transitions. [2023-03-30 23:23:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-30 23:23:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 10 states have internal predecessors, (581), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 336 [2023-03-30 23:23:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:20,842 INFO L225 Difference]: With dead ends: 137711 [2023-03-30 23:23:20,842 INFO L226 Difference]: Without dead ends: 79553 [2023-03-30 23:23:20,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 678 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-30 23:23:20,901 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5206 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 15270 mSolverCounterSat, 2314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5213 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 17584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2314 IncrementalHoareTripleChecker+Valid, 15270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:20,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5213 Valid, 222 Invalid, 17584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2314 Valid, 15270 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-03-30 23:23:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79553 states. [2023-03-30 23:23:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79553 to 76228. [2023-03-30 23:23:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76228 states, 74213 states have (on average 1.122337056849878) internal successors, (83292), 74684 states have internal predecessors, (83292), 455 states have call successors, (455), 382 states have call predecessors, (455), 1559 states have return successors, (15177), 1161 states have call predecessors, (15177), 454 states have call successors, (15177) [2023-03-30 23:23:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76228 states to 76228 states and 98924 transitions. [2023-03-30 23:23:22,521 INFO L78 Accepts]: Start accepts. Automaton has 76228 states and 98924 transitions. Word has length 336 [2023-03-30 23:23:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:22,522 INFO L495 AbstractCegarLoop]: Abstraction has 76228 states and 98924 transitions. [2023-03-30 23:23:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 10 states have internal predecessors, (581), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:23:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 76228 states and 98924 transitions. [2023-03-30 23:23:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-03-30 23:23:22,530 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:22,530 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, 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, 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] [2023-03-30 23:23:22,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-30 23:23:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:22,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:22,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1222095524, now seen corresponding path program 1 times [2023-03-30 23:23:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:22,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163033158] [2023-03-30 23:23:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-30 23:23:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-03-30 23:23:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:23:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163033158] [2023-03-30 23:23:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163033158] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:23:23,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638949232] [2023-03-30 23:23:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:23,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:23,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:23,226 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) [2023-03-30 23:23:23,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:23:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:23,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:23:23,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:23:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:23:23,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:23:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:23:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638949232] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:23:23,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:23:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:23:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824914187] [2023-03-30 23:23:23,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:23:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:23:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:23:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:23:23,670 INFO L87 Difference]: Start difference. First operand 76228 states and 98924 transitions. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 10 states have internal predecessors, (409), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)