/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:23:22,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:23:22,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:23:22,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:23:22,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:23:22,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:23:22,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:23:22,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:23:22,672 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:23:22,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:23:22,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:23:22,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:23:22,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:23:22,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:23:22,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:23:22,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:23:22,675 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:23:22,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:23:22,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:23:22,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:23:22,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:23:22,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:23:22,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:23:22,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:23:22,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:23:22,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:23:22,679 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:23:22,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:23:22,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:23:22,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:23:22,949 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:23:22,949 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:23:22,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label10.c [2023-03-30 23:23:24,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:23:24,648 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:23:24,648 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label10.c [2023-03-30 23:23:24,686 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0666d4452/2bf37bdc61414d0499e6bb8f3e06dcfd/FLAGd8980b225 [2023-03-30 23:23:24,701 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0666d4452/2bf37bdc61414d0499e6bb8f3e06dcfd [2023-03-30 23:23:24,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:23:24,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:23:24,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:23:24,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:23:24,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:23:24,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:23:24" (1/1) ... [2023-03-30 23:23:24,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca0d5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:24, skipping insertion in model container [2023-03-30 23:23:24,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:23:24" (1/1) ... [2023-03-30 23:23:24,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:23:24,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:23:25,114 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_label10.c[6726,6739] [2023-03-30 23:23:25,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:23:25,847 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:23:25,873 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_label10.c[6726,6739] [2023-03-30 23:23:26,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:23:26,345 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:23:26,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26 WrapperNode [2023-03-30 23:23:26,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:23:26,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:23:26,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:23:26,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:23:26,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,608 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:23:26,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:23:26,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:23:26,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:23:26,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (1/1) ... [2023-03-30 23:23:26,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:23:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:26,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:23:26,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:23:26,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:23:26,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:23:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:23:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:23:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:23:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:23:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:23:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:23:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:23:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:23:26,808 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:23:26,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:23:31,480 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:23:31,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:23:31,506 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:23:31,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:23:31 BoogieIcfgContainer [2023-03-30 23:23:31,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:23:31,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:23:31,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:23:31,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:23:31,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:23:24" (1/3) ... [2023-03-30 23:23:31,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d16af81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:23:31, skipping insertion in model container [2023-03-30 23:23:31,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:23:26" (2/3) ... [2023-03-30 23:23:31,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d16af81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:23:31, skipping insertion in model container [2023-03-30 23:23:31,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:23:31" (3/3) ... [2023-03-30 23:23:31,520 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10.c [2023-03-30 23:23:31,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:23:31,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:23:31,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:23:31,607 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;@7372780c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:23:31,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:23:31,615 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) [2023-03-30 23:23:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-30 23:23:31,623 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:31,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:31,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:31,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1092212804, now seen corresponding path program 1 times [2023-03-30 23:23:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985925120] [2023-03-30 23:23:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985925120] [2023-03-30 23:23:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985925120] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:32,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:23:32,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:23:32,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955588306] [2023-03-30 23:23:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:23:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:23:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:23:32,255 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 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:23:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:38,588 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2023-03-30 23:23:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:23:38,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 53 [2023-03-30 23:23:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:38,620 INFO L225 Difference]: With dead ends: 3165 [2023-03-30 23:23:38,620 INFO L226 Difference]: Without dead ends: 1961 [2023-03-30 23:23:38,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:23:38,635 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2895 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4376 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 4995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:38,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2895 Valid, 292 Invalid, 4995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 4376 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-03-30 23:23:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-03-30 23:23:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2023-03-30 23:23:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1918 states have (on average 1.7278415015641293) internal successors, (3314), 1920 states have internal predecessors, (3314), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-03-30 23:23:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2023-03-30 23:23:38,782 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 53 [2023-03-30 23:23:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2023-03-30 23:23:38,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:23:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2023-03-30 23:23:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-03-30 23:23:38,794 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:38,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:38,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:23:38,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:38,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1161836413, now seen corresponding path program 1 times [2023-03-30 23:23:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:38,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088632392] [2023-03-30 23:23:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088632392] [2023-03-30 23:23:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088632392] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:23:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:23:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018494542] [2023-03-30 23:23:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:39,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:23:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:23:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:23:39,237 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:23:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:47,170 INFO L93 Difference]: Finished difference Result 6452 states and 11418 transitions. [2023-03-30 23:23:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:23:47,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 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 122 [2023-03-30 23:23:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:47,193 INFO L225 Difference]: With dead ends: 6452 [2023-03-30 23:23:47,193 INFO L226 Difference]: Without dead ends: 4515 [2023-03-30 23:23:47,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:23:47,201 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 6901 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 6734 mSolverCounterSat, 2197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6901 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 8931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2197 IncrementalHoareTripleChecker+Valid, 6734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:47,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6901 Valid, 596 Invalid, 8931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 6734 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-03-30 23:23:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-03-30 23:23:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4476. [2023-03-30 23:23:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4388 states have (on average 1.5009115770282588) internal successors, (6586), 4401 states have internal predecessors, (6586), 22 states have call successors, (22), 22 states have call predecessors, (22), 65 states have return successors, (161), 52 states have call predecessors, (161), 21 states have call successors, (161) [2023-03-30 23:23:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6769 transitions. [2023-03-30 23:23:47,379 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6769 transitions. Word has length 122 [2023-03-30 23:23:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:47,381 INFO L495 AbstractCegarLoop]: Abstraction has 4476 states and 6769 transitions. [2023-03-30 23:23:47,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:23:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6769 transitions. [2023-03-30 23:23:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-03-30 23:23:47,384 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:47,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:23:47,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:47,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1081353055, now seen corresponding path program 1 times [2023-03-30 23:23:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602713546] [2023-03-30 23:23:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602713546] [2023-03-30 23:23:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602713546] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:23:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:23:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201802218] [2023-03-30 23:23:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:23:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:23:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:23:47,747 INFO L87 Difference]: Start difference. First operand 4476 states and 6769 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:23:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:54,089 INFO L93 Difference]: Finished difference Result 13390 states and 20653 transitions. [2023-03-30 23:23:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:23:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 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 124 [2023-03-30 23:23:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:54,138 INFO L225 Difference]: With dead ends: 13390 [2023-03-30 23:23:54,139 INFO L226 Difference]: Without dead ends: 8920 [2023-03-30 23:23:54,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:23:54,157 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5086 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 6567 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 6567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:54,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5086 Valid, 814 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 6567 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-03-30 23:23:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8920 states. [2023-03-30 23:23:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8920 to 8799. [2023-03-30 23:23:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8799 states, 8567 states have (on average 1.345862028714836) internal successors, (11530), 8609 states have internal predecessors, (11530), 42 states have call successors, (42), 42 states have call predecessors, (42), 189 states have return successors, (627), 147 states have call predecessors, (627), 41 states have call successors, (627) [2023-03-30 23:23:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8799 states to 8799 states and 12199 transitions. [2023-03-30 23:23:54,496 INFO L78 Accepts]: Start accepts. Automaton has 8799 states and 12199 transitions. Word has length 124 [2023-03-30 23:23:54,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:54,496 INFO L495 AbstractCegarLoop]: Abstraction has 8799 states and 12199 transitions. [2023-03-30 23:23:54,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:23:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8799 states and 12199 transitions. [2023-03-30 23:23:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-03-30 23:23:54,498 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:54,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:23:54,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:54,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1605914521, now seen corresponding path program 1 times [2023-03-30 23:23:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205324237] [2023-03-30 23:23:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:54,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205324237] [2023-03-30 23:23:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205324237] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:23:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381863159] [2023-03-30 23:23:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:54,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:23:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:23:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:54,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:23:54,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:23:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:55,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:23:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381863159] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:23:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:23:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011883349] [2023-03-30 23:23:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:23:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:23:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:23:55,122 INFO L87 Difference]: Start difference. First operand 8799 states and 12199 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:23:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:23:58,533 INFO L93 Difference]: Finished difference Result 25892 states and 37035 transitions. [2023-03-30 23:23:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:23:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-03-30 23:23:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:23:58,594 INFO L225 Difference]: With dead ends: 25892 [2023-03-30 23:23:58,594 INFO L226 Difference]: Without dead ends: 17099 [2023-03-30 23:23:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:23:58,614 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 841 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:23:58,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1150 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:23:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17099 states. [2023-03-30 23:23:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17099 to 17071. [2023-03-30 23:23:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17071 states, 16671 states have (on average 1.2196029032451563) internal successors, (20332), 16742 states have internal predecessors, (20332), 82 states have call successors, (82), 82 states have call predecessors, (82), 317 states have return successors, (1633), 246 states have call predecessors, (1633), 81 states have call successors, (1633) [2023-03-30 23:23:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17071 states to 17071 states and 22047 transitions. [2023-03-30 23:23:58,986 INFO L78 Accepts]: Start accepts. Automaton has 17071 states and 22047 transitions. Word has length 168 [2023-03-30 23:23:58,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:23:58,988 INFO L495 AbstractCegarLoop]: Abstraction has 17071 states and 22047 transitions. [2023-03-30 23:23:58,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:23:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 17071 states and 22047 transitions. [2023-03-30 23:23:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-03-30 23:23:58,993 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:23:58,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:23:58,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:23:59,200 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 [2023-03-30 23:23:59,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:23:59,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:23:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1159316723, now seen corresponding path program 1 times [2023-03-30 23:23:59,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:23:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598768116] [2023-03-30 23:23:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:59,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:23:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:23:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:23:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:59,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:23:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598768116] [2023-03-30 23:23:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598768116] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:23:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437595373] [2023-03-30 23:23:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:23:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:23:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:23:59,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:23:59,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:23:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:23:59,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:23:59,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:23:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:23:59,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:23:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437595373] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:23:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:23:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:23:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104121775] [2023-03-30 23:23:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:23:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:23:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:23:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:23:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:23:59,679 INFO L87 Difference]: Start difference. First operand 17071 states and 22047 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:24:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:24:02,606 INFO L93 Difference]: Finished difference Result 33334 states and 43327 transitions. [2023-03-30 23:24:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:24:02,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2023-03-30 23:24:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:24:02,657 INFO L225 Difference]: With dead ends: 33334 [2023-03-30 23:24:02,657 INFO L226 Difference]: Without dead ends: 17072 [2023-03-30 23:24:02,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:24:02,689 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 1180 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:24:02,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1518 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-30 23:24:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17072 states. [2023-03-30 23:24:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17072 to 15465. [2023-03-30 23:24:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15465 states, 15081 states have (on average 1.161925601750547) internal successors, (17523), 15152 states have internal predecessors, (17523), 74 states have call successors, (74), 74 states have call predecessors, (74), 309 states have return successors, (1141), 238 states have call predecessors, (1141), 73 states have call successors, (1141) [2023-03-30 23:24:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15465 states to 15465 states and 18738 transitions. [2023-03-30 23:24:03,005 INFO L78 Accepts]: Start accepts. Automaton has 15465 states and 18738 transitions. Word has length 173 [2023-03-30 23:24:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:24:03,006 INFO L495 AbstractCegarLoop]: Abstraction has 15465 states and 18738 transitions. [2023-03-30 23:24:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:24:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15465 states and 18738 transitions. [2023-03-30 23:24:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-03-30 23:24:03,010 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:24:03,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-03-30 23:24:03,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:24:03,215 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 [2023-03-30 23:24:03,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:24:03,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:24:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1838973786, now seen corresponding path program 1 times [2023-03-30 23:24:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:24:03,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820953599] [2023-03-30 23:24:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:24:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:24:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:24:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:24:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-30 23:24:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:24:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:24:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820953599] [2023-03-30 23:24:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820953599] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:24:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936799353] [2023-03-30 23:24:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:24:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:24:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:24:03,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:24:03,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:24:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:03,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:24:03,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:24:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:24:03,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:24:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:24:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936799353] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:24:04,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:24:04,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:24:04,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94004136] [2023-03-30 23:24:04,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:24:04,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:24:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:24:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:24:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:24:04,195 INFO L87 Difference]: Start difference. First operand 15465 states and 18738 transitions. Second operand has 11 states, 11 states have (on average 33.54545454545455) internal successors, (369), 9 states have internal predecessors, (369), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-30 23:24:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:24:10,438 INFO L93 Difference]: Finished difference Result 44657 states and 56720 transitions. [2023-03-30 23:24:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-30 23:24:10,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.54545454545455) internal successors, (369), 9 states have internal predecessors, (369), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 242 [2023-03-30 23:24:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:24:10,538 INFO L225 Difference]: With dead ends: 44657 [2023-03-30 23:24:10,538 INFO L226 Difference]: Without dead ends: 30001 [2023-03-30 23:24:10,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 485 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:24:10,574 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 7789 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 1915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7789 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1915 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:24:10,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7789 Valid, 633 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1915 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-03-30 23:24:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30001 states. [2023-03-30 23:24:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30001 to 29748. [2023-03-30 23:24:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29748 states, 28733 states have (on average 1.1312080186545088) internal successors, (32503), 28992 states have internal predecessors, (32503), 138 states have call successors, (138), 138 states have call predecessors, (138), 876 states have return successors, (3375), 617 states have call predecessors, (3375), 137 states have call successors, (3375) [2023-03-30 23:24:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29748 states to 29748 states and 36016 transitions. [2023-03-30 23:24:11,277 INFO L78 Accepts]: Start accepts. Automaton has 29748 states and 36016 transitions. Word has length 242 [2023-03-30 23:24:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:24:11,278 INFO L495 AbstractCegarLoop]: Abstraction has 29748 states and 36016 transitions. [2023-03-30 23:24:11,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.54545454545455) internal successors, (369), 9 states have internal predecessors, (369), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-30 23:24:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 29748 states and 36016 transitions. [2023-03-30 23:24:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-03-30 23:24:11,284 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:24:11,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:24:11,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-30 23:24:11,490 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 [2023-03-30 23:24:11,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:24:11,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:24:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash 441863149, now seen corresponding path program 1 times [2023-03-30 23:24:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:24:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050928827] [2023-03-30 23:24:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:24:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:24:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:24:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:24:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-30 23:24:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:24:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:24:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050928827] [2023-03-30 23:24:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050928827] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:24:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038423142] [2023-03-30 23:24:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:24:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:24:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:24:11,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:24:11,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:24:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:24:11,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:24:11,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:24:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-30 23:24:12,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:24:12,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038423142] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:24:12,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:24:12,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-30 23:24:12,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110868574] [2023-03-30 23:24:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:24:12,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:24:12,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:24:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:24:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:24:12,075 INFO L87 Difference]: Start difference. First operand 29748 states and 36016 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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)