/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/Problem18_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:39:44,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:39:44,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:39:44,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:39:44,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:39:44,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:39:44,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:39:44,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:39:44,516 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:39:44,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:39:44,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:39:44,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:39:44,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:39:44,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:39:44,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:39:44,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:39:44,519 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:39:44,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:39:44,520 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:39:44,521 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:39:44,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:39:44,522 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:39:44,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:39:44,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:39:44,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:39:44,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:44,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:39:44,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:39:44,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:39:44,524 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:39:44,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:39:44,524 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:39:44,524 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:39:44,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:39:44,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:39:44,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:39:44,774 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:39:44,774 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:39:44,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label13.c [2023-04-01 23:39:45,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:39:46,335 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:39:46,335 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label13.c [2023-04-01 23:39:46,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd7fb5f3/f02a45b393c14d568ecdd45e0f82db1f/FLAGd1312357c [2023-04-01 23:39:46,372 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd7fb5f3/f02a45b393c14d568ecdd45e0f82db1f [2023-04-01 23:39:46,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:39:46,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:39:46,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:46,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:39:46,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:39:46,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:46" (1/1) ... [2023-04-01 23:39:46,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2416b719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:46, skipping insertion in model container [2023-04-01 23:39:46,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:46" (1/1) ... [2023-04-01 23:39:46,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:39:46,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:39:46,672 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/Problem18_label13.c[4848,4861] [2023-04-01 23:39:47,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:47,288 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:39:47,313 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/Problem18_label13.c[4848,4861] [2023-04-01 23:39:47,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:47,596 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:39:47,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47 WrapperNode [2023-04-01 23:39:47,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:47,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:39:47,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:39:47,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:39:47,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:39:47,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:39:47,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:39:47,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:39:47,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (1/1) ... [2023-04-01 23:39:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:47,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:47,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:39:47,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:39:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:39:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:39:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:39:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:39:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:39:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:39:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:39:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:39:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:39:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:39:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:39:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:39:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:39:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:39:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:39:47,986 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:39:47,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:39:50,700 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:39:50,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:39:50,718 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:39:50,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:50 BoogieIcfgContainer [2023-04-01 23:39:50,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:39:50,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:39:50,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:39:50,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:39:50,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:39:46" (1/3) ... [2023-04-01 23:39:50,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414bd0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:50, skipping insertion in model container [2023-04-01 23:39:50,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:47" (2/3) ... [2023-04-01 23:39:50,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414bd0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:50, skipping insertion in model container [2023-04-01 23:39:50,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:50" (3/3) ... [2023-04-01 23:39:50,729 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label13.c [2023-04-01 23:39:50,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:39:50,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:39:50,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:39:50,821 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;@5c8d2246, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:39:50,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:39:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:39:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 23:39:50,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:50,841 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] [2023-04-01 23:39:50,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:50,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1187823582, now seen corresponding path program 1 times [2023-04-01 23:39:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903850075] [2023-04-01 23:39:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903850075] [2023-04-01 23:39:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903850075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:51,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:39:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278941321] [2023-04-01 23:39:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:39:51,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:51,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:39:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:39:51,409 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:39:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:57,611 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2023-04-01 23:39:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:39:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 51 [2023-04-01 23:39:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:57,644 INFO L225 Difference]: With dead ends: 2984 [2023-04-01 23:39:57,644 INFO L226 Difference]: Without dead ends: 2142 [2023-04-01 23:39:57,655 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 23:39:57,660 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3691 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 1827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1827 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:57,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 48 Invalid, 5583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1827 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 23:39:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2023-04-01 23:39:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2023-04-01 23:39:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2103 states have (on average 1.7622444127436996) internal successors, (3706), 2106 states have internal predecessors, (3706), 11 states have call successors, (11), 11 states have call predecessors, (11), 17 states have return successors, (36), 14 states have call predecessors, (36), 10 states have call successors, (36) [2023-04-01 23:39:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2023-04-01 23:39:57,818 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 51 [2023-04-01 23:39:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:57,820 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2023-04-01 23:39:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:39:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2023-04-01 23:39:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 23:39:57,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:57,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:57,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:39:57,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:57,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash -642034227, now seen corresponding path program 1 times [2023-04-01 23:39:57,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169421935] [2023-04-01 23:39:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:57,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:58,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169421935] [2023-04-01 23:39:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169421935] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:58,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:39:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240263168] [2023-04-01 23:39:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:39:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:39:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:39:58,376 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:03,183 INFO L93 Difference]: Finished difference Result 6547 states and 11633 transitions. [2023-04-01 23:40:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:40:03,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2023-04-01 23:40:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:03,206 INFO L225 Difference]: With dead ends: 6547 [2023-04-01 23:40:03,206 INFO L226 Difference]: Without dead ends: 4421 [2023-04-01 23:40:03,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:40:03,212 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3762 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5018 mSolverCounterSat, 979 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3762 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 5997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 979 IncrementalHoareTripleChecker+Valid, 5018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:03,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3762 Valid, 151 Invalid, 5997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [979 Valid, 5018 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 23:40:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-04-01 23:40:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4342. [2023-04-01 23:40:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 4256 states have (on average 1.4964755639097744) internal successors, (6369), 4272 states have internal predecessors, (6369), 20 states have call successors, (20), 20 states have call predecessors, (20), 65 states have return successors, (198), 49 states have call predecessors, (198), 19 states have call successors, (198) [2023-04-01 23:40:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 6587 transitions. [2023-04-01 23:40:03,323 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 6587 transitions. Word has length 140 [2023-04-01 23:40:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:03,325 INFO L495 AbstractCegarLoop]: Abstraction has 4342 states and 6587 transitions. [2023-04-01 23:40:03,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 6587 transitions. [2023-04-01 23:40:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-04-01 23:40:03,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:03,335 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, 2, 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] [2023-04-01 23:40:03,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:40:03,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:03,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash -131824858, now seen corresponding path program 1 times [2023-04-01 23:40:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378019065] [2023-04-01 23:40:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-01 23:40:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 88 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:40:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378019065] [2023-04-01 23:40:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378019065] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:03,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389662572] [2023-04-01 23:40:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:03,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:03,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:03,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:03,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:40:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:03,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:40:03,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 23:40:04,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389662572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 23:40:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78546802] [2023-04-01 23:40:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:04,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:40:04,105 INFO L87 Difference]: Start difference. First operand 4342 states and 6587 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:40:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:07,795 INFO L93 Difference]: Finished difference Result 13202 states and 20561 transitions. [2023-04-01 23:40:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:40:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 209 [2023-04-01 23:40:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:07,836 INFO L225 Difference]: With dead ends: 13202 [2023-04-01 23:40:07,837 INFO L226 Difference]: Without dead ends: 8866 [2023-04-01 23:40:07,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:40:07,850 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2266 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 1483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 81 Invalid, 5044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1483 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:40:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-04-01 23:40:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8080. [2023-04-01 23:40:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8080 states, 7876 states have (on average 1.309547993905536) internal successors, (10314), 7928 states have internal predecessors, (10314), 35 states have call successors, (35), 35 states have call predecessors, (35), 168 states have return successors, (676), 116 states have call predecessors, (676), 34 states have call successors, (676) [2023-04-01 23:40:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8080 states to 8080 states and 11025 transitions. [2023-04-01 23:40:08,058 INFO L78 Accepts]: Start accepts. Automaton has 8080 states and 11025 transitions. Word has length 209 [2023-04-01 23:40:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 8080 states and 11025 transitions. [2023-04-01 23:40:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:40:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8080 states and 11025 transitions. [2023-04-01 23:40:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-04-01 23:40:08,065 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:08,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:08,080 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 23:40:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:08,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:08,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1432391674, now seen corresponding path program 1 times [2023-04-01 23:40:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046186737] [2023-04-01 23:40:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-01 23:40:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 68 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-04-01 23:40:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046186737] [2023-04-01 23:40:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046186737] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762779518] [2023-04-01 23:40:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:08,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:08,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:40:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:08,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 23:40:09,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 203 proven. 69 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 23:40:09,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762779518] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:09,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:09,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:40:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031275682] [2023-04-01 23:40:09,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:40:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:40:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:09,276 INFO L87 Difference]: Start difference. First operand 8080 states and 11025 transitions. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 9 states have internal predecessors, (414), 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 23:40:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:16,355 INFO L93 Difference]: Finished difference Result 20559 states and 29515 transitions. [2023-04-01 23:40:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:40:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 9 states have internal predecessors, (414), 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 331 [2023-04-01 23:40:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:16,409 INFO L225 Difference]: With dead ends: 20559 [2023-04-01 23:40:16,409 INFO L226 Difference]: Without dead ends: 12485 [2023-04-01 23:40:16,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 672 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:40:16,428 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 3335 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 11052 mSolverCounterSat, 1609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 12661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1609 IncrementalHoareTripleChecker+Valid, 11052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:16,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 173 Invalid, 12661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1609 Valid, 11052 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 23:40:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12485 states. [2023-04-01 23:40:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12485 to 12448. [2023-04-01 23:40:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12448 states, 12146 states have (on average 1.2886547011361764) internal successors, (15652), 12228 states have internal predecessors, (15652), 53 states have call successors, (53), 53 states have call predecessors, (53), 248 states have return successors, (1261), 166 states have call predecessors, (1261), 52 states have call successors, (1261) [2023-04-01 23:40:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12448 states to 12448 states and 16966 transitions. [2023-04-01 23:40:16,787 INFO L78 Accepts]: Start accepts. Automaton has 12448 states and 16966 transitions. Word has length 331 [2023-04-01 23:40:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:16,789 INFO L495 AbstractCegarLoop]: Abstraction has 12448 states and 16966 transitions. [2023-04-01 23:40:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 9 states have internal predecessors, (414), 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 23:40:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 12448 states and 16966 transitions. [2023-04-01 23:40:16,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-04-01 23:40:16,796 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:16,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:16,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:17,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:40:17,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:17,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1400289875, now seen corresponding path program 1 times [2023-04-01 23:40:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950525176] [2023-04-01 23:40:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-01 23:40:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 206 proven. 72 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 23:40:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950525176] [2023-04-01 23:40:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950525176] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097321808] [2023-04-01 23:40:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:17,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:17,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:17,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:40:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:17,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 23:40:17,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 207 proven. 73 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-01 23:40:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097321808] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:17,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:40:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886812459] [2023-04-01 23:40:17,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:40:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:40:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:17,938 INFO L87 Difference]: Start difference. First operand 12448 states and 16966 transitions. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 9 states have internal predecessors, (427), 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 23:40:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:24,943 INFO L93 Difference]: Finished difference Result 38282 states and 54439 transitions. [2023-04-01 23:40:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:40:24,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 9 states have internal predecessors, (427), 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 336 [2023-04-01 23:40:24,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:25,011 INFO L225 Difference]: With dead ends: 38282 [2023-04-01 23:40:25,011 INFO L226 Difference]: Without dead ends: 22733 [2023-04-01 23:40:25,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 682 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:40:25,042 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 3756 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 11251 mSolverCounterSat, 2333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 13584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2333 IncrementalHoareTripleChecker+Valid, 11251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:25,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3759 Valid, 187 Invalid, 13584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2333 Valid, 11251 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 23:40:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2023-04-01 23:40:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 21807. [2023-04-01 23:40:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21807 states, 21330 states have (on average 1.0940928270042194) internal successors, (23337), 21471 states have internal predecessors, (23337), 93 states have call successors, (93), 92 states have call predecessors, (93), 383 states have return successors, (2096), 243 states have call predecessors, (2096), 92 states have call successors, (2096) [2023-04-01 23:40:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21807 states to 21807 states and 25526 transitions. [2023-04-01 23:40:25,479 INFO L78 Accepts]: Start accepts. Automaton has 21807 states and 25526 transitions. Word has length 336 [2023-04-01 23:40:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 21807 states and 25526 transitions. [2023-04-01 23:40:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 9 states have internal predecessors, (427), 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 23:40:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21807 states and 25526 transitions. [2023-04-01 23:40:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-04-01 23:40:25,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:25,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:25,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:25,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:25,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1635009822, now seen corresponding path program 1 times [2023-04-01 23:40:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233730045] [2023-04-01 23:40:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 308 proven. 8 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-04-01 23:40:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:26,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233730045] [2023-04-01 23:40:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233730045] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521755237] [2023-04-01 23:40:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:26,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:26,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:26,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:40:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:26,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:26,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521755237] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:26,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:40:26,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232763563] [2023-04-01 23:40:26,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:26,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:40:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:40:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:40:26,936 INFO L87 Difference]: Start difference. First operand 21807 states and 25526 transitions. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 13 states have internal predecessors, (442), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:40:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:34,285 INFO L93 Difference]: Finished difference Result 45027 states and 52544 transitions. [2023-04-01 23:40:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 23:40:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 13 states have internal predecessors, (442), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 369 [2023-04-01 23:40:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:34,362 INFO L225 Difference]: With dead ends: 45027 [2023-04-01 23:40:34,364 INFO L226 Difference]: Without dead ends: 25336 [2023-04-01 23:40:34,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2023-04-01 23:40:34,404 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11964 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 14592 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11964 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 15351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 14592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:34,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11964 Valid, 224 Invalid, 15351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 14592 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-04-01 23:40:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25336 states. [2023-04-01 23:40:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25336 to 21083. [2023-04-01 23:40:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21083 states, 20621 states have (on average 1.0607148052955724) internal successors, (21873), 20757 states have internal predecessors, (21873), 90 states have call successors, (90), 89 states have call predecessors, (90), 371 states have return successors, (1282), 236 states have call predecessors, (1282), 89 states have call successors, (1282) [2023-04-01 23:40:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21083 states to 21083 states and 23245 transitions. [2023-04-01 23:40:34,873 INFO L78 Accepts]: Start accepts. Automaton has 21083 states and 23245 transitions. Word has length 369 [2023-04-01 23:40:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 21083 states and 23245 transitions. [2023-04-01 23:40:34,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 13 states have internal predecessors, (442), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:40:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 21083 states and 23245 transitions. [2023-04-01 23:40:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-04-01 23:40:34,881 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:34,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:34,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:35,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:35,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash -333669162, now seen corresponding path program 1 times [2023-04-01 23:40:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304696289] [2023-04-01 23:40:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304696289] [2023-04-01 23:40:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304696289] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445015716] [2023-04-01 23:40:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:35,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:35,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:35,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:35,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:40:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:35,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:35,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445015716] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:35,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:35,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 23:40:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243864756] [2023-04-01 23:40:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:35,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:35,931 INFO L87 Difference]: Start difference. First operand 21083 states and 23245 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:37,592 INFO L93 Difference]: Finished difference Result 40050 states and 44255 transitions. [2023-04-01 23:40:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:37,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 429 [2023-04-01 23:40:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:37,649 INFO L225 Difference]: With dead ends: 40050 [2023-04-01 23:40:37,649 INFO L226 Difference]: Without dead ends: 21083 [2023-04-01 23:40:37,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:37,682 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 708 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:37,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 113 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:40:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2023-04-01 23:40:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 17530. [2023-04-01 23:40:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17530 states, 17115 states have (on average 1.0539293017820626) internal successors, (18038), 17242 states have internal predecessors, (18038), 74 states have call successors, (74), 74 states have call predecessors, (74), 340 states have return successors, (924), 213 states have call predecessors, (924), 73 states have call successors, (924) [2023-04-01 23:40:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17530 states to 17530 states and 19036 transitions. [2023-04-01 23:40:37,982 INFO L78 Accepts]: Start accepts. Automaton has 17530 states and 19036 transitions. Word has length 429 [2023-04-01 23:40:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:37,983 INFO L495 AbstractCegarLoop]: Abstraction has 17530 states and 19036 transitions. [2023-04-01 23:40:37,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17530 states and 19036 transitions. [2023-04-01 23:40:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-04-01 23:40:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:37,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:38,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:38,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:38,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:38,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash -507078595, now seen corresponding path program 1 times [2023-04-01 23:40:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123484109] [2023-04-01 23:40:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:40:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123484109] [2023-04-01 23:40:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123484109] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331947973] [2023-04-01 23:40:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:38,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:38,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:38,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:38,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:40:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:38,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:39,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331947973] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:39,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:40:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030794061] [2023-04-01 23:40:39,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:40:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:40:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:40:39,612 INFO L87 Difference]: Start difference. First operand 17530 states and 19036 transitions. Second operand has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:40:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:46,000 INFO L93 Difference]: Finished difference Result 59965 states and 67014 transitions. [2023-04-01 23:40:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 23:40:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 440 [2023-04-01 23:40:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:46,113 INFO L225 Difference]: With dead ends: 59965 [2023-04-01 23:40:46,113 INFO L226 Difference]: Without dead ends: 42441 [2023-04-01 23:40:46,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 898 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-04-01 23:40:46,139 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 5058 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 9312 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 10115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 9312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:46,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 303 Invalid, 10115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 9312 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 23:40:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42441 states. [2023-04-01 23:40:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42441 to 36052. [2023-04-01 23:40:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 35372 states have (on average 1.0459120208074184) internal successors, (36996), 35556 states have internal predecessors, (36996), 152 states have call successors, (152), 152 states have call predecessors, (152), 527 states have return successors, (2249), 343 states have call predecessors, (2249), 151 states have call successors, (2249) [2023-04-01 23:40:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 39397 transitions. [2023-04-01 23:40:46,731 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 39397 transitions. Word has length 440 [2023-04-01 23:40:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:46,732 INFO L495 AbstractCegarLoop]: Abstraction has 36052 states and 39397 transitions. [2023-04-01 23:40:46,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:40:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 39397 transitions. [2023-04-01 23:40:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2023-04-01 23:40:46,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:46,749 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:46,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:46,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:46,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1692814786, now seen corresponding path program 1 times [2023-04-01 23:40:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981712213] [2023-04-01 23:40:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-04-01 23:40:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 379 proven. 37 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:40:48,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981712213] [2023-04-01 23:40:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981712213] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802185037] [2023-04-01 23:40:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:48,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:48,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:48,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:40:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:48,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:40:48,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-04-01 23:40:49,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:49,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802185037] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-04-01 23:40:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070454931] [2023-04-01 23:40:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:49,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:49,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:49,478 INFO L87 Difference]: Start difference. First operand 36052 states and 39397 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 4 states have internal predecessors, (346), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:40:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:52,287 INFO L93 Difference]: Finished difference Result 77855 states and 84926 transitions. [2023-04-01 23:40:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:40:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 4 states have internal predecessors, (346), 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 557 [2023-04-01 23:40:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:52,381 INFO L225 Difference]: With dead ends: 77855 [2023-04-01 23:40:52,381 INFO L226 Difference]: Without dead ends: 41809 [2023-04-01 23:40:52,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:40:52,419 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1873 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:52,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 104 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:40:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41809 states. [2023-04-01 23:40:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41809 to 41751. [2023-04-01 23:40:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41751 states, 40988 states have (on average 1.0396945447448034) internal successors, (42615), 41194 states have internal predecessors, (42615), 176 states have call successors, (176), 176 states have call predecessors, (176), 586 states have return successors, (2374), 380 states have call predecessors, (2374), 175 states have call successors, (2374) [2023-04-01 23:40:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41751 states to 41751 states and 45165 transitions. [2023-04-01 23:40:53,134 INFO L78 Accepts]: Start accepts. Automaton has 41751 states and 45165 transitions. Word has length 557 [2023-04-01 23:40:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:53,135 INFO L495 AbstractCegarLoop]: Abstraction has 41751 states and 45165 transitions. [2023-04-01 23:40:53,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 4 states have internal predecessors, (346), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:40:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 41751 states and 45165 transitions. [2023-04-01 23:40:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2023-04-01 23:40:53,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:53,170 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:53,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:53,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:53,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:53,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1428226668, now seen corresponding path program 1 times [2023-04-01 23:40:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286795863] [2023-04-01 23:40:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:40:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1021 [2023-04-01 23:40:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1131 [2023-04-01 23:40:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 880 proven. 2 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2023-04-01 23:40:55,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286795863] [2023-04-01 23:40:55,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286795863] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940573402] [2023-04-01 23:40:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:55,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:55,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:55,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:40:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:55,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:55,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 885 proven. 2 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2023-04-01 23:40:55,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 885 proven. 2 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2023-04-01 23:40:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940573402] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:56,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:56,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-04-01 23:40:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852086420] [2023-04-01 23:40:56,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 23:40:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 23:40:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:40:56,260 INFO L87 Difference]: Start difference. First operand 41751 states and 45165 transitions. Second operand has 9 states, 9 states have (on average 116.33333333333333) internal successors, (1047), 7 states have internal predecessors, (1047), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 23:40:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:59,581 INFO L93 Difference]: Finished difference Result 101309 states and 111388 transitions. [2023-04-01 23:40:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 23:40:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 116.33333333333333) internal successors, (1047), 7 states have internal predecessors, (1047), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1335 [2023-04-01 23:40:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:59,691 INFO L225 Difference]: With dead ends: 101309 [2023-04-01 23:40:59,692 INFO L226 Difference]: Without dead ends: 59564 [2023-04-01 23:40:59,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2708 GetRequests, 2692 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:40:59,725 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3794 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:59,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3794 Valid, 107 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 23:40:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59564 states. [2023-04-01 23:41:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59564 to 58798. [2023-04-01 23:41:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58798 states, 57808 states have (on average 1.0437136728480487) internal successors, (60335), 58064 states have internal predecessors, (60335), 248 states have call successors, (248), 248 states have call predecessors, (248), 741 states have return successors, (4096), 485 states have call predecessors, (4096), 247 states have call successors, (4096) [2023-04-01 23:41:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58798 states to 58798 states and 64679 transitions. [2023-04-01 23:41:00,706 INFO L78 Accepts]: Start accepts. Automaton has 58798 states and 64679 transitions. Word has length 1335 [2023-04-01 23:41:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:00,708 INFO L495 AbstractCegarLoop]: Abstraction has 58798 states and 64679 transitions. [2023-04-01 23:41:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.33333333333333) internal successors, (1047), 7 states have internal predecessors, (1047), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 23:41:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 58798 states and 64679 transitions. [2023-04-01 23:41:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1649 [2023-04-01 23:41:00,808 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:00,808 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:00,819 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 23:41:01,019 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,SelfDestructingSolverStorable9 [2023-04-01 23:41:01,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:01,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1314616719, now seen corresponding path program 1 times [2023-04-01 23:41:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:01,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181040692] [2023-04-01 23:41:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:41:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1021 [2023-04-01 23:41:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1444 [2023-04-01 23:41:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 1190 proven. 160 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2023-04-01 23:41:03,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181040692] [2023-04-01 23:41:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181040692] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113493527] [2023-04-01 23:41:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:03,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:03,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:03,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:41:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:03,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:41:03,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 1797 proven. 2 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2023-04-01 23:41:04,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 1196 proven. 161 refuted. 0 times theorem prover too weak. 1232 trivial. 0 not checked. [2023-04-01 23:41:05,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113493527] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:05,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:05,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:41:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486786007] [2023-04-01 23:41:05,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:41:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:41:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:41:05,562 INFO L87 Difference]: Start difference. First operand 58798 states and 64679 transitions. Second operand has 11 states, 11 states have (on average 177.0) internal successors, (1947), 9 states have internal predecessors, (1947), 7 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 23:41:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:11,997 INFO L93 Difference]: Finished difference Result 124085 states and 136890 transitions. [2023-04-01 23:41:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:41:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 177.0) internal successors, (1947), 9 states have internal predecessors, (1947), 7 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 1648 [2023-04-01 23:41:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:12,132 INFO L225 Difference]: With dead ends: 124085 [2023-04-01 23:41:12,133 INFO L226 Difference]: Without dead ends: 61736 [2023-04-01 23:41:12,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3351 GetRequests, 3325 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:41:12,197 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 3785 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 11260 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3791 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 12078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 11260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:12,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3791 Valid, 222 Invalid, 12078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 11260 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 23:41:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61736 states. [2023-04-01 23:41:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61736 to 55986. [2023-04-01 23:41:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55986 states, 55021 states have (on average 1.031242616455535) internal successors, (56740), 55278 states have internal predecessors, (56740), 236 states have call successors, (236), 236 states have call predecessors, (236), 728 states have return successors, (2875), 471 states have call predecessors, (2875), 235 states have call successors, (2875) [2023-04-01 23:41:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55986 states to 55986 states and 59851 transitions. [2023-04-01 23:41:13,533 INFO L78 Accepts]: Start accepts. Automaton has 55986 states and 59851 transitions. Word has length 1648 [2023-04-01 23:41:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:13,535 INFO L495 AbstractCegarLoop]: Abstraction has 55986 states and 59851 transitions. [2023-04-01 23:41:13,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.0) internal successors, (1947), 9 states have internal predecessors, (1947), 7 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 23:41:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 55986 states and 59851 transitions. [2023-04-01 23:41:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2023-04-01 23:41:13,717 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:13,718 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:13,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:13,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:13,927 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:13,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2081428469, now seen corresponding path program 1 times [2023-04-01 23:41:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750580060] [2023-04-01 23:41:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:41:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:41:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2023-04-01 23:41:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 470 proven. 230 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2023-04-01 23:41:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750580060] [2023-04-01 23:41:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750580060] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185510638] [2023-04-01 23:41:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:15,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:15,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:15,743 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:15,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:41:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:16,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:16,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2023-04-01 23:41:16,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185510638] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:16,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:16,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 23:41:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514526590] [2023-04-01 23:41:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:16,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:41:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:41:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:41:16,254 INFO L87 Difference]: Start difference. First operand 55986 states and 59851 transitions. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-01 23:41:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:18,369 INFO L93 Difference]: Finished difference Result 121822 states and 130550 transitions. [2023-04-01 23:41:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:41:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1713 [2023-04-01 23:41:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:18,521 INFO L225 Difference]: With dead ends: 121822 [2023-04-01 23:41:18,521 INFO L226 Difference]: Without dead ends: 65834 [2023-04-01 23:41:18,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1742 GetRequests, 1736 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:41:18,579 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 659 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:18,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 287 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:41:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65834 states. [2023-04-01 23:41:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65834 to 64428. [2023-04-01 23:41:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64428 states, 63383 states have (on average 1.0290771973557578) internal successors, (65226), 63646 states have internal predecessors, (65226), 272 states have call successors, (272), 272 states have call predecessors, (272), 772 states have return successors, (3173), 509 states have call predecessors, (3173), 271 states have call successors, (3173) [2023-04-01 23:41:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64428 states to 64428 states and 68671 transitions. [2023-04-01 23:41:19,594 INFO L78 Accepts]: Start accepts. Automaton has 64428 states and 68671 transitions. Word has length 1713 [2023-04-01 23:41:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:19,595 INFO L495 AbstractCegarLoop]: Abstraction has 64428 states and 68671 transitions. [2023-04-01 23:41:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-01 23:41:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 64428 states and 68671 transitions. [2023-04-01 23:41:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2023-04-01 23:41:19,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:19,669 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:19,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:19,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:41:19,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:19,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 80788332, now seen corresponding path program 1 times [2023-04-01 23:41:19,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:19,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541739329] [2023-04-01 23:41:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:41:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:41:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2023-04-01 23:41:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1544 [2023-04-01 23:41:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 1340 proven. 160 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-04-01 23:41:22,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541739329] [2023-04-01 23:41:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541739329] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331046345] [2023-04-01 23:41:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:22,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:22,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:22,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:22,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:41:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:23,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:23,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 1044 proven. 2 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2023-04-01 23:41:23,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 1044 proven. 2 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2023-04-01 23:41:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331046345] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:24,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 23:41:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608861459] [2023-04-01 23:41:24,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:24,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:41:24,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:41:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:41:24,560 INFO L87 Difference]: Start difference. First operand 64428 states and 68671 transitions. Second operand has 12 states, 12 states have (on average 113.5) internal successors, (1362), 10 states have internal predecessors, (1362), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:31,082 INFO L93 Difference]: Finished difference Result 143484 states and 153716 transitions. [2023-04-01 23:41:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 23:41:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 113.5) internal successors, (1362), 10 states have internal predecessors, (1362), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1748 [2023-04-01 23:41:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:31,236 INFO L225 Difference]: With dead ends: 143484 [2023-04-01 23:41:31,236 INFO L226 Difference]: Without dead ends: 79764 [2023-04-01 23:41:31,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3577 GetRequests, 3539 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 23:41:31,281 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 4256 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 10523 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 11431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 10523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:31,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 271 Invalid, 11431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 10523 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 23:41:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79764 states. [2023-04-01 23:41:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79764 to 78939. [2023-04-01 23:41:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78939 states, 77577 states have (on average 1.024814055712389) internal successors, (79502), 77960 states have internal predecessors, (79502), 332 states have call successors, (332), 332 states have call predecessors, (332), 1029 states have return successors, (3592), 646 states have call predecessors, (3592), 331 states have call successors, (3592) [2023-04-01 23:41:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78939 states to 78939 states and 83426 transitions. [2023-04-01 23:41:32,373 INFO L78 Accepts]: Start accepts. Automaton has 78939 states and 83426 transitions. Word has length 1748 [2023-04-01 23:41:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:32,374 INFO L495 AbstractCegarLoop]: Abstraction has 78939 states and 83426 transitions. [2023-04-01 23:41:32,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.5) internal successors, (1362), 10 states have internal predecessors, (1362), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 78939 states and 83426 transitions. [2023-04-01 23:41:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1818 [2023-04-01 23:41:32,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:32,456 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:32,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:32,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:41:32,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:32,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1929774028, now seen corresponding path program 1 times [2023-04-01 23:41:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:32,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872337866] [2023-04-01 23:41:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:41:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2023-04-01 23:41:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1613 [2023-04-01 23:41:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2770 backedges. 470 proven. 266 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2023-04-01 23:41:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872337866] [2023-04-01 23:41:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872337866] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454126714] [2023-04-01 23:41:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:34,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:34,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:34,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:41:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:35,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:41:35,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2770 backedges. 2036 proven. 2 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2023-04-01 23:41:35,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2770 backedges. 598 proven. 214 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2023-04-01 23:41:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454126714] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:37,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:37,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:41:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135790131] [2023-04-01 23:41:37,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:41:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:41:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:41:37,854 INFO L87 Difference]: Start difference. First operand 78939 states and 83426 transitions. Second operand has 12 states, 12 states have (on average 121.25) internal successors, (1455), 10 states have internal predecessors, (1455), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:41:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:44,823 INFO L93 Difference]: Finished difference Result 181199 states and 192728 transitions. [2023-04-01 23:41:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:41:44,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 121.25) internal successors, (1455), 10 states have internal predecessors, (1455), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 1817 [2023-04-01 23:41:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:44,825 INFO L225 Difference]: With dead ends: 181199 [2023-04-01 23:41:44,825 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:41:44,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3691 GetRequests, 3666 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:41:44,896 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4335 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9029 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 9673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 9029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:44,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4335 Valid, 250 Invalid, 9673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 9029 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 23:41:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:41:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:41:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 23:41:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:41:44,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1817 [2023-04-01 23:41:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:44,899 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:41:44,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 121.25) internal successors, (1455), 10 states have internal predecessors, (1455), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:41:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:41:44,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:41:44,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:41:44,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:41:45,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 23:42:30,266 WARN L223 SmtUtils]: Spent 43.08s on a formula simplification. DAG size of input: 629 DAG size of output: 703 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-01 23:43:18,358 WARN L223 SmtUtils]: Spent 42.45s on a formula simplification. DAG size of input: 629 DAG size of output: 703 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)