/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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:44:30,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:44:30,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:44:30,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:44:30,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:44:30,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:44:30,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:44:30,251 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 22:44:30,279 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:44:30,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:44:30,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:44:30,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:44:30,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:44:30,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:44:30,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:44:30,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:44:30,281 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:44:30,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:44:30,282 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:44:30,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:44:30,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:44:30,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:44:30,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:44:30,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:44:30,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:44:30,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:44:30,285 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:44:30,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:44:30,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:44:30,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:44:30,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:44:30,476 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:44:30,476 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:44:30,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2023-04-01 22:44:31,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:44:31,955 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:44:31,955 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2023-04-01 22:44:31,982 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeccf08a7/356dc9be865b45488a99ca7422be0f95/FLAGfcd00f9f9 [2023-04-01 22:44:31,995 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeccf08a7/356dc9be865b45488a99ca7422be0f95 [2023-04-01 22:44:31,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:44:31,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:44:31,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:44:32,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:44:32,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:44:32,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:44:31" (1/1) ... [2023-04-01 22:44:32,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c342d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:32, skipping insertion in model container [2023-04-01 22:44:32,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:44:31" (1/1) ... [2023-04-01 22:44:32,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:44:32,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:44:32,281 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_label35.c[1793,1806] [2023-04-01 22:44:32,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:44:32,939 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:44:32,955 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_label35.c[1793,1806] [2023-04-01 22:44:33,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:44:33,328 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:44:33,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33 WrapperNode [2023-04-01 22:44:33,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:44:33,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:44:33,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:44:33,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:44:33,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:44:33,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:44:33,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:44:33,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:44:33,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (1/1) ... [2023-04-01 22:44:33,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:44:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:33,723 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 22:44:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:44:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:44:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:44:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:44:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:44:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:44:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:44:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:44:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:44:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:44:33,757 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 22:44:33,825 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:44:33,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:44:37,754 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:44:37,764 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:44:37,764 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:44:37,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:44:37 BoogieIcfgContainer [2023-04-01 22:44:37,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:44:37,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:44:37,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:44:37,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:44:37,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:44:31" (1/3) ... [2023-04-01 22:44:37,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f5f175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:44:37, skipping insertion in model container [2023-04-01 22:44:37,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:33" (2/3) ... [2023-04-01 22:44:37,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f5f175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:44:37, skipping insertion in model container [2023-04-01 22:44:37,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:44:37" (3/3) ... [2023-04-01 22:44:37,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label35.c [2023-04-01 22:44:37,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:44:37,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:44:37,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:44:37,858 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;@1554c554, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:44:37,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:44:37,867 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 22:44:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 22:44:37,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:37,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:37,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:37,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1882046087, now seen corresponding path program 1 times [2023-04-01 22:44:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418353749] [2023-04-01 22:44:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:38,271 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 22:44:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418353749] [2023-04-01 22:44:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418353749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:44:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775688055] [2023-04-01 22:44:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:38,297 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 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:44:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:46,095 INFO L93 Difference]: Finished difference Result 3973 states and 7416 transitions. [2023-04-01 22:44:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:44:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16 [2023-04-01 22:44:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:46,123 INFO L225 Difference]: With dead ends: 3973 [2023-04-01 22:44:46,123 INFO L226 Difference]: Without dead ends: 2786 [2023-04-01 22:44:46,133 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 22:44:46,137 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 4577 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 1924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 8408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1924 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:46,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 368 Invalid, 8408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1924 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 22:44:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-04-01 22:44:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2763. [2023-04-01 22:44:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2723 states have (on average 1.5894234300403967) internal successors, (4328), 2726 states have internal predecessors, (4328), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (53), 22 states have call predecessors, (53), 13 states have call successors, (53) [2023-04-01 22:44:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4395 transitions. [2023-04-01 22:44:46,271 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4395 transitions. Word has length 16 [2023-04-01 22:44:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:46,272 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4395 transitions. [2023-04-01 22:44:46,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:44:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4395 transitions. [2023-04-01 22:44:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 22:44:46,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:46,277 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:44:46,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:44:46,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:46,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1215973619, now seen corresponding path program 1 times [2023-04-01 22:44:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:46,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887726201] [2023-04-01 22:44:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887726201] [2023-04-01 22:44:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887726201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:46,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:44:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197673496] [2023-04-01 22:44:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:44:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:44:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:44:46,576 INFO L87 Difference]: Start difference. First operand 2763 states and 4395 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 22:44:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:52,600 INFO L93 Difference]: Finished difference Result 8257 states and 13322 transitions. [2023-04-01 22:44:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:44:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 92 [2023-04-01 22:44:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:52,623 INFO L225 Difference]: With dead ends: 8257 [2023-04-01 22:44:52,624 INFO L226 Difference]: Without dead ends: 5500 [2023-04-01 22:44:52,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:52,637 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 3939 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 6931 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 6931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:52,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 729 Invalid, 7894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 6931 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 22:44:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2023-04-01 22:44:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 5408. [2023-04-01 22:44:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5302 states have (on average 1.4620897774424746) internal successors, (7752), 5317 states have internal predecessors, (7752), 26 states have call successors, (26), 26 states have call predecessors, (26), 79 states have return successors, (209), 64 states have call predecessors, (209), 25 states have call successors, (209) [2023-04-01 22:44:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 7987 transitions. [2023-04-01 22:44:52,757 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 7987 transitions. Word has length 92 [2023-04-01 22:44:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:52,757 INFO L495 AbstractCegarLoop]: Abstraction has 5408 states and 7987 transitions. [2023-04-01 22:44:52,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 22:44:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 7987 transitions. [2023-04-01 22:44:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-01 22:44:52,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:52,763 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:44:52,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:44:52,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:52,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash -760345207, now seen corresponding path program 1 times [2023-04-01 22:44:52,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:52,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686427553] [2023-04-01 22:44:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:52,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686427553] [2023-04-01 22:44:53,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686427553] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:53,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:53,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:44:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186632356] [2023-04-01 22:44:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:44:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:44:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:44:53,243 INFO L87 Difference]: Start difference. First operand 5408 states and 7987 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 22:44:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:59,452 INFO L93 Difference]: Finished difference Result 16345 states and 25124 transitions. [2023-04-01 22:44:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:44:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 106 [2023-04-01 22:44:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:59,488 INFO L225 Difference]: With dead ends: 16345 [2023-04-01 22:44:59,489 INFO L226 Difference]: Without dead ends: 10943 [2023-04-01 22:44:59,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:59,501 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 3365 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 7044 mSolverCounterSat, 1203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 8247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 7044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:59,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3365 Valid, 757 Invalid, 8247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1203 Valid, 7044 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:44:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10943 states. [2023-04-01 22:44:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10943 to 10746. [2023-04-01 22:44:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10746 states, 10407 states have (on average 1.3400595752858653) internal successors, (13946), 10483 states have internal predecessors, (13946), 50 states have call successors, (50), 50 states have call predecessors, (50), 288 states have return successors, (1132), 212 states have call predecessors, (1132), 49 states have call successors, (1132) [2023-04-01 22:44:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10746 states to 10746 states and 15128 transitions. [2023-04-01 22:44:59,703 INFO L78 Accepts]: Start accepts. Automaton has 10746 states and 15128 transitions. Word has length 106 [2023-04-01 22:44:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 10746 states and 15128 transitions. [2023-04-01 22:44:59,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 22:44:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 10746 states and 15128 transitions. [2023-04-01 22:44:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-04-01 22:44:59,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:59,711 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:44:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:44:59,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:59,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -122674440, now seen corresponding path program 1 times [2023-04-01 22:44:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752675832] [2023-04-01 22:44:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752675832] [2023-04-01 22:45:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752675832] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401828107] [2023-04-01 22:45:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:00,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:00,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:00,511 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 22:45:00,514 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 22:45:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:00,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:45:00,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:00,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401828107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-04-01 22:45:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787780888] [2023-04-01 22:45:00,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:00,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:45:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:45:00,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:45:00,867 INFO L87 Difference]: Start difference. First operand 10746 states and 15128 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:45:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:05,234 INFO L93 Difference]: Finished difference Result 22864 states and 32242 transitions. [2023-04-01 22:45:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:45:05,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 186 [2023-04-01 22:45:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:05,277 INFO L225 Difference]: With dead ends: 22864 [2023-04-01 22:45:05,277 INFO L226 Difference]: Without dead ends: 12124 [2023-04-01 22:45:05,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:45:05,301 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 2299 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:05,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 645 Invalid, 5990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 5806 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 22:45:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2023-04-01 22:45:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 11839. [2023-04-01 22:45:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11839 states, 11380 states have (on average 1.3131810193321616) internal successors, (14944), 11502 states have internal predecessors, (14944), 54 states have call successors, (54), 54 states have call predecessors, (54), 404 states have return successors, (1521), 282 states have call predecessors, (1521), 53 states have call successors, (1521) [2023-04-01 22:45:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 16519 transitions. [2023-04-01 22:45:05,529 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 16519 transitions. Word has length 186 [2023-04-01 22:45:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:05,615 INFO L495 AbstractCegarLoop]: Abstraction has 11839 states and 16519 transitions. [2023-04-01 22:45:05,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:45:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 16519 transitions. [2023-04-01 22:45:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-04-01 22:45:05,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:05,618 INFO L195 NwaCegarLoop]: trace histogram [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, 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 22:45:05,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:45:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:05,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:05,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1612808739, now seen corresponding path program 1 times [2023-04-01 22:45:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756692404] [2023-04-01 22:45:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:45:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:45:06,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:06,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756692404] [2023-04-01 22:45:06,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756692404] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:06,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322759246] [2023-04-01 22:45:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:06,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:06,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:06,016 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 22:45:06,018 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 22:45:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:06,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:45:06,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:45:06,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:06,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322759246] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:06,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:06,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:45:06,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421318322] [2023-04-01 22:45:06,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:45:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:45:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:45:06,132 INFO L87 Difference]: Start difference. First operand 11839 states and 16519 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 22:45:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:08,909 INFO L93 Difference]: Finished difference Result 22686 states and 32233 transitions. [2023-04-01 22:45:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:45:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 216 [2023-04-01 22:45:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:08,939 INFO L225 Difference]: With dead ends: 22686 [2023-04-01 22:45:08,939 INFO L226 Difference]: Without dead ends: 11656 [2023-04-01 22:45:08,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 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 22:45:08,960 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1128 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:08,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1729 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:45:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11656 states. [2023-04-01 22:45:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11656 to 11656. [2023-04-01 22:45:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11218 states have (on average 1.2134070244250312) internal successors, (13612), 11332 states have internal predecessors, (13612), 54 states have call successors, (54), 54 states have call predecessors, (54), 383 states have return successors, (1257), 269 states have call predecessors, (1257), 53 states have call successors, (1257) [2023-04-01 22:45:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 14923 transitions. [2023-04-01 22:45:09,115 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 14923 transitions. Word has length 216 [2023-04-01 22:45:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:09,116 INFO L495 AbstractCegarLoop]: Abstraction has 11656 states and 14923 transitions. [2023-04-01 22:45:09,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 22:45:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 14923 transitions. [2023-04-01 22:45:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 22:45:09,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:09,120 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:45:09,126 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 22:45:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:09,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:09,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -723992966, now seen corresponding path program 1 times [2023-04-01 22:45:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364930032] [2023-04-01 22:45:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:45:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-01 22:45:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 73 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 22:45:09,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364930032] [2023-04-01 22:45:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364930032] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083778818] [2023-04-01 22:45:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:09,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:09,773 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 22:45:09,774 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 22:45:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:09,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:09,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 22:45:09,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 103 proven. 74 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-01 22:45:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083778818] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:10,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 22:45:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769928114] [2023-04-01 22:45:10,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:10,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:45:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:45:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:45:10,197 INFO L87 Difference]: Start difference. First operand 11656 states and 14923 transitions. Second operand has 13 states, 13 states have (on average 31.53846153846154) internal successors, (410), 11 states have internal predecessors, (410), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:45:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:17,069 INFO L93 Difference]: Finished difference Result 38858 states and 53072 transitions. [2023-04-01 22:45:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 22:45:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 31.53846153846154) internal successors, (410), 11 states have internal predecessors, (410), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 275 [2023-04-01 22:45:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:17,189 INFO L225 Difference]: With dead ends: 38858 [2023-04-01 22:45:17,189 INFO L226 Difference]: Without dead ends: 28011 [2023-04-01 22:45:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 561 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:45:17,207 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 11917 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 8560 mSolverCounterSat, 3182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11917 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 11742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3182 IncrementalHoareTripleChecker+Valid, 8560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11917 Valid, 748 Invalid, 11742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3182 Valid, 8560 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:45:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28011 states. [2023-04-01 22:45:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28011 to 26180. [2023-04-01 22:45:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26180 states, 25266 states have (on average 1.1413361830127444) internal successors, (28837), 25513 states have internal predecessors, (28837), 122 states have call successors, (122), 122 states have call predecessors, (122), 791 states have return successors, (3564), 544 states have call predecessors, (3564), 121 states have call successors, (3564) [2023-04-01 22:45:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26180 states to 26180 states and 32523 transitions. [2023-04-01 22:45:17,587 INFO L78 Accepts]: Start accepts. Automaton has 26180 states and 32523 transitions. Word has length 275 [2023-04-01 22:45:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:17,588 INFO L495 AbstractCegarLoop]: Abstraction has 26180 states and 32523 transitions. [2023-04-01 22:45:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.53846153846154) internal successors, (410), 11 states have internal predecessors, (410), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:45:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 26180 states and 32523 transitions. [2023-04-01 22:45:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-04-01 22:45:17,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:17,592 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:17,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 22:45:17,799 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 22:45:17,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:17,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1439116312, now seen corresponding path program 1 times [2023-04-01 22:45:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611253707] [2023-04-01 22:45:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:45:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:45:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611253707] [2023-04-01 22:45:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611253707] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406515898] [2023-04-01 22:45:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:18,511 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 22:45:18,514 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 22:45:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:45:18,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 22:45:18,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406515898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-04-01 22:45:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625974640] [2023-04-01 22:45:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:18,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:45:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:45:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:45:18,877 INFO L87 Difference]: Start difference. First operand 26180 states and 32523 transitions. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 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 22:45:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:22,789 INFO L93 Difference]: Finished difference Result 52222 states and 65698 transitions. [2023-04-01 22:45:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:45:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 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 279 [2023-04-01 22:45:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:22,996 INFO L225 Difference]: With dead ends: 52222 [2023-04-01 22:45:22,996 INFO L226 Difference]: Without dead ends: 26851 [2023-04-01 22:45:23,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:45:23,031 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2466 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 5513 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 5862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 5513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 600 Invalid, 5862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 5513 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:45:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26851 states. [2023-04-01 22:45:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26851 to 26441. [2023-04-01 22:45:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26441 states, 25424 states have (on average 1.1402218376337319) internal successors, (28989), 25718 states have internal predecessors, (28989), 122 states have call successors, (122), 122 states have call predecessors, (122), 894 states have return successors, (3949), 600 states have call predecessors, (3949), 121 states have call successors, (3949) [2023-04-01 22:45:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26441 states to 26441 states and 33060 transitions. [2023-04-01 22:45:23,395 INFO L78 Accepts]: Start accepts. Automaton has 26441 states and 33060 transitions. Word has length 279 [2023-04-01 22:45:23,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:23,395 INFO L495 AbstractCegarLoop]: Abstraction has 26441 states and 33060 transitions. [2023-04-01 22:45:23,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 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 22:45:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 26441 states and 33060 transitions. [2023-04-01 22:45:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-04-01 22:45:23,398 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:23,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:23,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:45:23,603 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 22:45:23,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:23,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1304113908, now seen corresponding path program 1 times [2023-04-01 22:45:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:23,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004901065] [2023-04-01 22:45:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:45:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:45:24,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004901065] [2023-04-01 22:45:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004901065] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856776519] [2023-04-01 22:45:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:24,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:24,420 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 22:45:24,468 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 22:45:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:24,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:45:24,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 22:45:25,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856776519] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:27,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:27,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 20 [2023-04-01 22:45:27,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628176602] [2023-04-01 22:45:27,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 22:45:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 22:45:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:45:27,873 INFO L87 Difference]: Start difference. First operand 26441 states and 33060 transitions. Second operand has 20 states, 20 states have (on average 36.0) internal successors, (720), 17 states have internal predecessors, (720), 8 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-01 22:46:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:02,215 INFO L93 Difference]: Finished difference Result 132051 states and 189583 transitions. [2023-04-01 22:46:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-04-01 22:46:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 36.0) internal successors, (720), 17 states have internal predecessors, (720), 8 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 286 [2023-04-01 22:46:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:02,526 INFO L225 Difference]: With dead ends: 132051 [2023-04-01 22:46:02,526 INFO L226 Difference]: Without dead ends: 102246 [2023-04-01 22:46:02,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20661 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5910, Invalid=42270, Unknown=0, NotChecked=0, Total=48180 [2023-04-01 22:46:02,580 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 24097 mSDsluCounter, 3570 mSDsCounter, 0 mSdLazyCounter, 41360 mSolverCounterSat, 6993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24097 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 48353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6993 IncrementalHoareTripleChecker+Valid, 41360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:02,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24097 Valid, 3918 Invalid, 48353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6993 Valid, 41360 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2023-04-01 22:46:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102246 states. [2023-04-01 22:46:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102246 to 99749. [2023-04-01 22:46:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99749 states, 97307 states have (on average 1.120433267904673) internal successors, (109026), 97952 states have internal predecessors, (109026), 478 states have call successors, (478), 478 states have call predecessors, (478), 1963 states have return successors, (19415), 1318 states have call predecessors, (19415), 477 states have call successors, (19415) [2023-04-01 22:46:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99749 states to 99749 states and 128919 transitions. [2023-04-01 22:46:05,651 INFO L78 Accepts]: Start accepts. Automaton has 99749 states and 128919 transitions. Word has length 286 [2023-04-01 22:46:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:05,651 INFO L495 AbstractCegarLoop]: Abstraction has 99749 states and 128919 transitions. [2023-04-01 22:46:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.0) internal successors, (720), 17 states have internal predecessors, (720), 8 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-01 22:46:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 99749 states and 128919 transitions. [2023-04-01 22:46:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-04-01 22:46:05,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:05,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:05,677 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 22:46:05,877 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 22:46:05,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:05,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 13846722, now seen corresponding path program 1 times [2023-04-01 22:46:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351639510] [2023-04-01 22:46:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:46:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 22:46:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:06,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351639510] [2023-04-01 22:46:06,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351639510] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:06,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122676279] [2023-04-01 22:46:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:06,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:06,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:06,376 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 22:46:06,378 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 22:46:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:06,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:46:06,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-04-01 22:46:06,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:46:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122676279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:46:06,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:46:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:46:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735931483] [2023-04-01 22:46:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:46:06,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:46:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:46:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:46:06,529 INFO L87 Difference]: Start difference. First operand 99749 states and 128919 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) [2023-04-01 22:46:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:09,983 INFO L93 Difference]: Finished difference Result 198651 states and 256997 transitions. [2023-04-01 22:46:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:46:09,983 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 339 [2023-04-01 22:46:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:10,370 INFO L225 Difference]: With dead ends: 198651 [2023-04-01 22:46:10,370 INFO L226 Difference]: Without dead ends: 99711 [2023-04-01 22:46:10,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:46:10,448 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1199 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:10,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1462 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 22:46:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99711 states. [2023-04-01 22:46:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99711 to 97293. [2023-04-01 22:46:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97293 states, 94892 states have (on average 1.0970577077098176) internal successors, (104102), 95531 states have internal predecessors, (104102), 466 states have call successors, (466), 466 states have call predecessors, (466), 1934 states have return successors, (15542), 1295 states have call predecessors, (15542), 465 states have call successors, (15542) [2023-04-01 22:46:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97293 states to 97293 states and 120110 transitions. [2023-04-01 22:46:12,179 INFO L78 Accepts]: Start accepts. Automaton has 97293 states and 120110 transitions. Word has length 339 [2023-04-01 22:46:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 97293 states and 120110 transitions. [2023-04-01 22:46:12,180 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) [2023-04-01 22:46:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 97293 states and 120110 transitions. [2023-04-01 22:46:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2023-04-01 22:46:12,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:12,208 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:12,215 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 22:46:12,413 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 22:46:12,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:12,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 749353806, now seen corresponding path program 1 times [2023-04-01 22:46:12,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:12,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666486998] [2023-04-01 22:46:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:12,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:46:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-01 22:46:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-04-01 22:46:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 141 proven. 218 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-04-01 22:46:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666486998] [2023-04-01 22:46:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666486998] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244540820] [2023-04-01 22:46:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:13,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:13,118 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 22:46:13,120 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 22:46:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:13,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:46:13,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-04-01 22:46:13,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 142 proven. 220 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 22:46:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244540820] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:13,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:46:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279042211] [2023-04-01 22:46:13,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:13,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:46:13,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:46:13,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:46:13,813 INFO L87 Difference]: Start difference. First operand 97293 states and 120110 transitions. Second operand has 11 states, 11 states have (on average 83.18181818181819) internal successors, (915), 9 states have internal predecessors, (915), 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) [2023-04-01 22:46:22,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:22,521 INFO L93 Difference]: Finished difference Result 222203 states and 279748 transitions. [2023-04-01 22:46:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:46:22,528 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 83.18181818181819) internal successors, (915), 9 states have internal predecessors, (915), 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) Word has length 597 [2023-04-01 22:46:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:22,913 INFO L225 Difference]: With dead ends: 222203 [2023-04-01 22:46:22,914 INFO L226 Difference]: Without dead ends: 124907 [2023-04-01 22:46:23,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1212 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:46:23,013 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 5869 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 11104 mSolverCounterSat, 2500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5869 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 13604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2500 IncrementalHoareTripleChecker+Valid, 11104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:23,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5869 Valid, 874 Invalid, 13604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2500 Valid, 11104 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 22:46:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124907 states. [2023-04-01 22:46:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124907 to 119041. [2023-04-01 22:46:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119041 states, 116090 states have (on average 1.086183133775519) internal successors, (126095), 116901 states have internal predecessors, (126095), 570 states have call successors, (570), 570 states have call predecessors, (570), 2380 states have return successors, (20010), 1569 states have call predecessors, (20010), 569 states have call successors, (20010) [2023-04-01 22:46:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119041 states to 119041 states and 146675 transitions. [2023-04-01 22:46:25,156 INFO L78 Accepts]: Start accepts. Automaton has 119041 states and 146675 transitions. Word has length 597 [2023-04-01 22:46:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:25,157 INFO L495 AbstractCegarLoop]: Abstraction has 119041 states and 146675 transitions. [2023-04-01 22:46:25,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 83.18181818181819) internal successors, (915), 9 states have internal predecessors, (915), 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) [2023-04-01 22:46:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 119041 states and 146675 transitions. [2023-04-01 22:46:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-04-01 22:46:25,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:25,181 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 22:46:25,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:46:25,388 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 22:46:25,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:25,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1704631557, now seen corresponding path program 1 times [2023-04-01 22:46:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582418529] [2023-04-01 22:46:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:46:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 22:46:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-04-01 22:46:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 159 proven. 407 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-04-01 22:46:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582418529] [2023-04-01 22:46:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582418529] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640789929] [2023-04-01 22:46:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:26,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:26,551 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 22:46:26,553 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 22:46:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:26,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:46:26,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 557 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-04-01 22:46:28,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 45 proven. 526 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 22:46:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640789929] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:30,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:30,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 22:46:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410801941] [2023-04-01 22:46:30,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:46:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:46:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:46:30,815 INFO L87 Difference]: Start difference. First operand 119041 states and 146675 transitions. Second operand has 25 states, 25 states have (on average 50.12) internal successors, (1253), 23 states have internal predecessors, (1253), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:47:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:22,418 INFO L93 Difference]: Finished difference Result 377077 states and 482103 transitions. [2023-04-01 22:47:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-04-01 22:47:22,419 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 50.12) internal successors, (1253), 23 states have internal predecessors, (1253), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 611 [2023-04-01 22:47:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:23,420 INFO L225 Difference]: With dead ends: 377077 [2023-04-01 22:47:23,421 INFO L226 Difference]: Without dead ends: 254322 [2023-04-01 22:47:23,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1668 GetRequests, 1406 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31354 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9320, Invalid=60112, Unknown=0, NotChecked=0, Total=69432 [2023-04-01 22:47:23,544 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 52545 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 63951 mSolverCounterSat, 13812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52566 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 77763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13812 IncrementalHoareTripleChecker+Valid, 63951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:23,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52566 Valid, 3298 Invalid, 77763 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13812 Valid, 63951 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2023-04-01 22:47:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254322 states. [2023-04-01 22:47:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254322 to 238055. [2023-04-01 22:47:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238055 states, 233572 states have (on average 1.0735490555374787) internal successors, (250751), 234557 states have internal predecessors, (250751), 1158 states have call successors, (1158), 1158 states have call predecessors, (1158), 3324 states have return successors, (37134), 2339 states have call predecessors, (37134), 1157 states have call successors, (37134) [2023-04-01 22:47:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238055 states to 238055 states and 289043 transitions. [2023-04-01 22:47:28,207 INFO L78 Accepts]: Start accepts. Automaton has 238055 states and 289043 transitions. Word has length 611 [2023-04-01 22:47:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:28,208 INFO L495 AbstractCegarLoop]: Abstraction has 238055 states and 289043 transitions. [2023-04-01 22:47:28,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 50.12) internal successors, (1253), 23 states have internal predecessors, (1253), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:47:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 238055 states and 289043 transitions. [2023-04-01 22:47:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-04-01 22:47:28,304 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:47:28,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:28,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:47:28,509 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 22:47:28,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:47:28,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:47:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 998951852, now seen corresponding path program 1 times [2023-04-01 22:47:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:47:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431935493] [2023-04-01 22:47:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:47:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:47:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:47:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:47:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:47:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-04-01 22:47:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2023-04-01 22:47:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 253 proven. 196 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-04-01 22:47:29,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:47:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431935493] [2023-04-01 22:47:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431935493] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:47:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516437512] [2023-04-01 22:47:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:29,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:29,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:47:29,401 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 22:47:29,403 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 22:47:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:29,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:47:29,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:47:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 800 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-04-01 22:47:29,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:47:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 255 proven. 198 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2023-04-01 22:47:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516437512] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:47:29,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:47:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:47:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97887130] [2023-04-01 22:47:29,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:47:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:47:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:47:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:47:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:47:29,960 INFO L87 Difference]: Start difference. First operand 238055 states and 289043 transitions. Second operand has 11 states, 11 states have (on average 75.36363636363636) internal successors, (829), 9 states have internal predecessors, (829), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:47:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:39,248 INFO L93 Difference]: Finished difference Result 503895 states and 617348 transitions. [2023-04-01 22:47:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:47:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.36363636363636) internal successors, (829), 9 states have internal predecessors, (829), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 666 [2023-04-01 22:47:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:40,270 INFO L225 Difference]: With dead ends: 503895 [2023-04-01 22:47:40,271 INFO L226 Difference]: Without dead ends: 266649 [2023-04-01 22:47:40,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1351 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:47:40,479 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 5032 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 9498 mSolverCounterSat, 1686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5035 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 11184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1686 IncrementalHoareTripleChecker+Valid, 9498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:40,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5035 Valid, 1058 Invalid, 11184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1686 Valid, 9498 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:47:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266649 states. [2023-04-01 22:47:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266649 to 248787. [2023-04-01 22:47:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248787 states, 244087 states have (on average 1.050854818159099) internal successors, (256500), 245142 states have internal predecessors, (256500), 1210 states have call successors, (1210), 1210 states have call predecessors, (1210), 3489 states have return successors, (27555), 2434 states have call predecessors, (27555), 1209 states have call successors, (27555) [2023-04-01 22:47:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248787 states to 248787 states and 285265 transitions. [2023-04-01 22:47:45,495 INFO L78 Accepts]: Start accepts. Automaton has 248787 states and 285265 transitions. Word has length 666 [2023-04-01 22:47:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:45,518 INFO L495 AbstractCegarLoop]: Abstraction has 248787 states and 285265 transitions. [2023-04-01 22:47:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.36363636363636) internal successors, (829), 9 states have internal predecessors, (829), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:47:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 248787 states and 285265 transitions. [2023-04-01 22:47:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-04-01 22:47:45,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:47:45,566 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:45,588 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 22:47:45,771 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 22:47:45,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:47:45,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:47:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1313038471, now seen corresponding path program 1 times [2023-04-01 22:47:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:47:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347674924] [2023-04-01 22:47:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:47:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:47:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:46,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:47:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:47:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:47:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 22:47:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-04-01 22:47:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 341 proven. 94 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-04-01 22:47:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:47:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347674924] [2023-04-01 22:47:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347674924] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:47:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896746174] [2023-04-01 22:47:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:47:47,397 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 22:47:47,461 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 22:47:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:47,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:47:47,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:47:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 680 proven. 2 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-04-01 22:47:48,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:47:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 58 proven. 642 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-04-01 22:47:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896746174] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:47:49,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:47:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2023-04-01 22:47:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475071928] [2023-04-01 22:47:49,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:47:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:47:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:47:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:47:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:47:49,439 INFO L87 Difference]: Start difference. First operand 248787 states and 285265 transitions. Second operand has 18 states, 18 states have (on average 55.44444444444444) internal successors, (998), 16 states have internal predecessors, (998), 7 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:48:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:48:33,523 INFO L93 Difference]: Finished difference Result 715492 states and 825727 transitions. [2023-04-01 22:48:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2023-04-01 22:48:33,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 55.44444444444444) internal successors, (998), 16 states have internal predecessors, (998), 7 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 707 [2023-04-01 22:48:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted.