/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:43:27,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:43:27,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:43:27,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:43:27,372 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 23:43:27,397 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:43:27,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:43:27,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:43:27,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:43:27,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:43:27,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:43:27,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:43:27,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:43:27,399 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:43:27,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:43:27,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:43:27,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:27,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:43:27,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:43:27,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:43:27,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:43:27,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:43:27,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:43:27,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:43:27,639 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:43:27,640 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:43:27,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label30.c [2023-04-01 23:43:28,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:43:29,076 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:43:29,077 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label30.c [2023-04-01 23:43:29,097 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b67b62/f932081e61344b3ca896789474d141d8/FLAG7e0dfdd38 [2023-04-01 23:43:29,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b67b62/f932081e61344b3ca896789474d141d8 [2023-04-01 23:43:29,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:43:29,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:43:29,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:29,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:43:29,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:43:29,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:29,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3475660d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29, skipping insertion in model container [2023-04-01 23:43:29,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:29,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:43:29,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:43:29,367 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_label30.c[4655,4668] [2023-04-01 23:43:29,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:29,749 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:43:29,771 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_label30.c[4655,4668] [2023-04-01 23:43:29,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:29,996 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:43:29,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29 WrapperNode [2023-04-01 23:43:29,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:29,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:43:29,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:43:29,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:43:30,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:43:30,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:43:30,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:43:30,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:43:30,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (1/1) ... [2023-04-01 23:43:30,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:30,196 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 23:43:30,225 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 23:43:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:43:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:43:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:43:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:43:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:43:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:43:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:43:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:43:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:43:30,310 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:43:30,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:43:32,662 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:43:32,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:43:32,671 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:43:32,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:32 BoogieIcfgContainer [2023-04-01 23:43:32,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:43:32,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:43:32,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:43:32,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:43:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:43:29" (1/3) ... [2023-04-01 23:43:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:32, skipping insertion in model container [2023-04-01 23:43:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:29" (2/3) ... [2023-04-01 23:43:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:32, skipping insertion in model container [2023-04-01 23:43:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:32" (3/3) ... [2023-04-01 23:43:32,678 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label30.c [2023-04-01 23:43:32,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:43:32,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:43:32,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:43:32,762 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;@35c89b5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:43:32,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:43:32,768 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 23:43:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-01 23:43:32,776 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:32,776 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] [2023-04-01 23:43:32,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:32,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1198999862, now seen corresponding path program 1 times [2023-04-01 23:43:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409020465] [2023-04-01 23:43:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:33,205 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 23:43:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409020465] [2023-04-01 23:43:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409020465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:43:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536782643] [2023-04-01 23:43:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:33,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:43:33,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:43:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:43:33,230 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 4 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 23:43:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:36,966 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:43:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:43:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 49 [2023-04-01 23:43:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:36,984 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:43:36,984 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:43:36,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:43:36,993 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2236 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:36,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 23:43:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:43:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:43:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:43:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:43:37,086 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 49 [2023-04-01 23:43:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:37,086 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:43:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 23:43:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:43:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-01 23:43:37,092 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:37,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:37,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:43:37,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:37,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -144297123, now seen corresponding path program 1 times [2023-04-01 23:43:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769078326] [2023-04-01 23:43:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769078326] [2023-04-01 23:43:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769078326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:43:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294013289] [2023-04-01 23:43:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:43:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:43:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:43:37,436 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 23:43:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:42,905 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:43:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:43:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 118 [2023-04-01 23:43:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:42,919 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:43:42,919 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:43:42,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:43:42,922 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3830 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:42,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3830 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 23:43:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:43:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:43:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:43:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:43:43,002 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 118 [2023-04-01 23:43:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:43,004 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:43:43,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 23:43:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:43:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-04-01 23:43:43,012 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:43,012 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, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:43:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:43:43,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:43,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash -403721051, now seen corresponding path program 1 times [2023-04-01 23:43:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173205062] [2023-04-01 23:43:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:43:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173205062] [2023-04-01 23:43:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173205062] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662397593] [2023-04-01 23:43:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:43,331 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 23:43:43,364 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 23:43:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:43,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:43,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:43,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:43:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662397593] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:43:43,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:43:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:43:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295979515] [2023-04-01 23:43:43,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:43:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:43:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:43:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:43:43,839 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 9 states have internal predecessors, (378), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:43:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:50,667 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:43:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:43:50,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 9 states have internal predecessors, (378), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 244 [2023-04-01 23:43:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:50,727 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:43:50,727 INFO L226 Difference]: Without dead ends: 8832 [2023-04-01 23:43:50,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 492 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:43:50,736 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 12035 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 13981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 12035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:50,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 208 Invalid, 13981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 12035 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 23:43:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2023-04-01 23:43:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7297. [2023-04-01 23:43:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7129 states have (on average 1.1161453219245336) internal successors, (7957), 7172 states have internal predecessors, (7957), 32 states have call successors, (32), 32 states have call predecessors, (32), 135 states have return successors, (343), 92 states have call predecessors, (343), 31 states have call successors, (343) [2023-04-01 23:43:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8332 transitions. [2023-04-01 23:43:50,870 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8332 transitions. Word has length 244 [2023-04-01 23:43:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:50,871 INFO L495 AbstractCegarLoop]: Abstraction has 7297 states and 8332 transitions. [2023-04-01 23:43:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.36363636363637) internal successors, (378), 9 states have internal predecessors, (378), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:43:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8332 transitions. [2023-04-01 23:43:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-04-01 23:43:50,873 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:50,874 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:43:50,881 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 23:43:51,079 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 23:43:51,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:51,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1121925142, now seen corresponding path program 1 times [2023-04-01 23:43:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159318076] [2023-04-01 23:43:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 82 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 23:43:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159318076] [2023-04-01 23:43:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159318076] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773388487] [2023-04-01 23:43:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:51,534 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 23:43:51,537 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 23:43:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:51,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:43:51,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:43:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773388487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:51,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:43:51,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:43:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061959614] [2023-04-01 23:43:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:51,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:43:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:43:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:43:51,717 INFO L87 Difference]: Start difference. First operand 7297 states and 8332 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 23:43:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:53,182 INFO L93 Difference]: Finished difference Result 14588 states and 16658 transitions. [2023-04-01 23:43:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:43:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 277 [2023-04-01 23:43:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:53,218 INFO L225 Difference]: With dead ends: 14588 [2023-04-01 23:43:53,218 INFO L226 Difference]: Without dead ends: 7297 [2023-04-01 23:43:53,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:43:53,247 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 726 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:53,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 944 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:43:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2023-04-01 23:43:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 7289. [2023-04-01 23:43:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7124 states have (on average 1.0765019651880965) internal successors, (7669), 7166 states have internal predecessors, (7669), 32 states have call successors, (32), 32 states have call predecessors, (32), 132 states have return successors, (244), 90 states have call predecessors, (244), 31 states have call successors, (244) [2023-04-01 23:43:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 7945 transitions. [2023-04-01 23:43:53,420 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 7945 transitions. Word has length 277 [2023-04-01 23:43:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 7945 transitions. [2023-04-01 23:43:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 23:43:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 7945 transitions. [2023-04-01 23:43:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-04-01 23:43:53,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:53,424 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, 3, 3, 3, 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, 1, 1, 1, 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 23:43:53,449 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 23:43:53,629 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 23:43:53,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:53,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash 445091965, now seen corresponding path program 1 times [2023-04-01 23:43:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:53,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187702687] [2023-04-01 23:43:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:43:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:43:53,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:53,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187702687] [2023-04-01 23:43:53,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187702687] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:53,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311812842] [2023-04-01 23:43:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:53,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:53,879 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 23:43:53,939 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 23:43:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:54,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:54,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:43:54,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:43:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311812842] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:54,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:43:54,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:43:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553235441] [2023-04-01 23:43:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:43:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:43:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:54,076 INFO L87 Difference]: Start difference. First operand 7289 states and 7945 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 23:43:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:55,706 INFO L93 Difference]: Finished difference Result 18850 states and 20880 transitions. [2023-04-01 23:43:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:43:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 346 [2023-04-01 23:43:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:55,746 INFO L225 Difference]: With dead ends: 18850 [2023-04-01 23:43:55,746 INFO L226 Difference]: Without dead ends: 11567 [2023-04-01 23:43:55,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:55,759 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 676 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:55,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 282 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:43:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2023-04-01 23:43:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 10865. [2023-04-01 23:43:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10865 states, 10644 states have (on average 1.0697106350995866) internal successors, (11386), 10698 states have internal predecessors, (11386), 47 states have call successors, (47), 47 states have call predecessors, (47), 173 states have return successors, (445), 119 states have call predecessors, (445), 46 states have call successors, (445) [2023-04-01 23:43:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 11878 transitions. [2023-04-01 23:43:55,970 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 11878 transitions. Word has length 346 [2023-04-01 23:43:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:55,970 INFO L495 AbstractCegarLoop]: Abstraction has 10865 states and 11878 transitions. [2023-04-01 23:43:55,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 23:43:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 11878 transitions. [2023-04-01 23:43:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-04-01 23:43:55,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:55,975 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:55,989 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 23:43:56,181 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 23:43:56,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:56,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash -988477582, now seen corresponding path program 1 times [2023-04-01 23:43:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:56,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357414038] [2023-04-01 23:43:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:56,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:43:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:43:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:56,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357414038] [2023-04-01 23:43:56,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357414038] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:56,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576806993] [2023-04-01 23:43:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:56,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:56,442 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 23:43:56,509 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 23:43:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:56,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:56,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:43:56,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:43:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576806993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:56,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:43:56,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:43:56,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653118179] [2023-04-01 23:43:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:56,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:43:56,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:43:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:56,687 INFO L87 Difference]: Start difference. First operand 10865 states and 11878 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 23:43:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:58,208 INFO L93 Difference]: Finished difference Result 25997 states and 28758 transitions. [2023-04-01 23:43:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:43:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 365 [2023-04-01 23:43:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:58,251 INFO L225 Difference]: With dead ends: 25997 [2023-04-01 23:43:58,251 INFO L226 Difference]: Without dead ends: 15138 [2023-04-01 23:43:58,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:58,268 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 689 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:58,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 194 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:43:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2023-04-01 23:43:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13727. [2023-04-01 23:43:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13461 states have (on average 1.0728029121164846) internal successors, (14441), 13524 states have internal predecessors, (14441), 59 states have call successors, (59), 59 states have call predecessors, (59), 206 states have return successors, (651), 143 states have call predecessors, (651), 58 states have call successors, (651) [2023-04-01 23:43:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 15151 transitions. [2023-04-01 23:43:58,440 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 15151 transitions. Word has length 365 [2023-04-01 23:43:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:58,441 INFO L495 AbstractCegarLoop]: Abstraction has 13727 states and 15151 transitions. [2023-04-01 23:43:58,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 23:43:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 15151 transitions. [2023-04-01 23:43:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-04-01 23:43:58,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:58,446 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:43:58,453 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 23:43:58,651 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 23:43:58,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:58,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -595868530, now seen corresponding path program 1 times [2023-04-01 23:43:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:58,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142590812] [2023-04-01 23:43:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:43:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:43:59,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:59,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142590812] [2023-04-01 23:43:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142590812] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:59,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566795083] [2023-04-01 23:43:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:59,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:59,008 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 23:43:59,010 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 23:43:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:59,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:59,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:43:59,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:43:59,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566795083] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:59,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:43:59,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:43:59,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809282802] [2023-04-01 23:43:59,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:59,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:43:59,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:43:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:59,179 INFO L87 Difference]: Start difference. First operand 13727 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 23:44:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:00,596 INFO L93 Difference]: Finished difference Result 39532 states and 44396 transitions. [2023-04-01 23:44:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:00,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 427 [2023-04-01 23:44:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:00,649 INFO L225 Difference]: With dead ends: 39532 [2023-04-01 23:44:00,649 INFO L226 Difference]: Without dead ends: 25811 [2023-04-01 23:44:00,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:00,668 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 663 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:00,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1007 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:44:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2023-04-01 23:44:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 24407. [2023-04-01 23:44:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 23991 states have (on average 1.0591471801925723) internal successors, (25410), 24084 states have internal predecessors, (25410), 104 states have call successors, (104), 104 states have call predecessors, (104), 311 states have return successors, (1391), 218 states have call predecessors, (1391), 103 states have call successors, (1391) [2023-04-01 23:44:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 26905 transitions. [2023-04-01 23:44:00,964 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 26905 transitions. Word has length 427 [2023-04-01 23:44:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:00,964 INFO L495 AbstractCegarLoop]: Abstraction has 24407 states and 26905 transitions. [2023-04-01 23:44:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 23:44:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 26905 transitions. [2023-04-01 23:44:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-04-01 23:44:00,971 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:00,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:00,977 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 23:44:01,176 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 23:44:01,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:01,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1120793791, now seen corresponding path program 1 times [2023-04-01 23:44:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523595658] [2023-04-01 23:44:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:44:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 449 proven. 11 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-04-01 23:44:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523595658] [2023-04-01 23:44:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523595658] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728901357] [2023-04-01 23:44:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:01,658 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 23:44:01,659 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 23:44:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:01,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:01,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:01,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:02,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728901357] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:02,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:44:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739799296] [2023-04-01 23:44:02,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:44:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:44:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:44:02,249 INFO L87 Difference]: Start difference. First operand 24407 states and 26905 transitions. Second operand has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 11 states have internal predecessors, (489), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:05,146 INFO L93 Difference]: Finished difference Result 52496 states and 58062 transitions. [2023-04-01 23:44:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:44:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 11 states have internal predecessors, (489), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 454 [2023-04-01 23:44:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:05,212 INFO L225 Difference]: With dead ends: 52496 [2023-04-01 23:44:05,212 INFO L226 Difference]: Without dead ends: 28095 [2023-04-01 23:44:05,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 918 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:44:05,244 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5880 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 1290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5880 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 4604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1290 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:05,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5880 Valid, 102 Invalid, 4604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1290 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:44:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2023-04-01 23:44:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 28069. [2023-04-01 23:44:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28069 states, 27562 states have (on average 1.047456643204412) internal successors, (28870), 27686 states have internal predecessors, (28870), 119 states have call successors, (119), 119 states have call predecessors, (119), 387 states have return successors, (1459), 263 states have call predecessors, (1459), 118 states have call successors, (1459) [2023-04-01 23:44:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28069 states to 28069 states and 30448 transitions. [2023-04-01 23:44:05,685 INFO L78 Accepts]: Start accepts. Automaton has 28069 states and 30448 transitions. Word has length 454 [2023-04-01 23:44:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:05,685 INFO L495 AbstractCegarLoop]: Abstraction has 28069 states and 30448 transitions. [2023-04-01 23:44:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.61538461538461) internal successors, (489), 11 states have internal predecessors, (489), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 28069 states and 30448 transitions. [2023-04-01 23:44:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-04-01 23:44:05,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:05,697 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:05,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 23:44:05,902 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 23:44:05,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:05,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash -54507026, now seen corresponding path program 1 times [2023-04-01 23:44:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362630417] [2023-04-01 23:44:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-04-01 23:44:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 249 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 23:44:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362630417] [2023-04-01 23:44:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362630417] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651020515] [2023-04-01 23:44:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:06,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:06,277 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 23:44:06,278 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 23:44:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:06,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:06,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 23:44:06,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 250 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 23:44:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651020515] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:07,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:44:07,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336606834] [2023-04-01 23:44:07,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:44:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:44:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:44:07,326 INFO L87 Difference]: Start difference. First operand 28069 states and 30448 transitions. Second operand has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:12,760 INFO L93 Difference]: Finished difference Result 90393 states and 100867 transitions. [2023-04-01 23:44:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 475 [2023-04-01 23:44:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:12,953 INFO L225 Difference]: With dead ends: 90393 [2023-04-01 23:44:12,954 INFO L226 Difference]: Without dead ends: 62330 [2023-04-01 23:44:12,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 965 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:44:12,978 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 4355 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 7458 mSolverCounterSat, 1525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 8983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1525 IncrementalHoareTripleChecker+Valid, 7458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:12,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 190 Invalid, 8983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1525 Valid, 7458 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:44:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62330 states. [2023-04-01 23:44:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62330 to 57406. [2023-04-01 23:44:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57406 states, 56423 states have (on average 1.0494301969055173) internal successors, (59212), 56682 states have internal predecessors, (59212), 242 states have call successors, (242), 242 states have call predecessors, (242), 740 states have return successors, (4347), 481 states have call predecessors, (4347), 241 states have call successors, (4347) [2023-04-01 23:44:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57406 states to 57406 states and 63801 transitions. [2023-04-01 23:44:13,845 INFO L78 Accepts]: Start accepts. Automaton has 57406 states and 63801 transitions. Word has length 475 [2023-04-01 23:44:13,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:13,845 INFO L495 AbstractCegarLoop]: Abstraction has 57406 states and 63801 transitions. [2023-04-01 23:44:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 57406 states and 63801 transitions. [2023-04-01 23:44:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-04-01 23:44:13,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:13,856 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:13,877 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 23:44:14,062 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 23:44:14,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:14,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1180774063, now seen corresponding path program 1 times [2023-04-01 23:44:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:14,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666907337] [2023-04-01 23:44:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 126 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666907337] [2023-04-01 23:44:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666907337] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736660726] [2023-04-01 23:44:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:14,699 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 23:44:14,761 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 23:44:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:14,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:14,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:14,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:14,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736660726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:14,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:44:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378142517] [2023-04-01 23:44:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:14,931 INFO L87 Difference]: Start difference. First operand 57406 states and 63801 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:16,595 INFO L93 Difference]: Finished difference Result 114806 states and 127596 transitions. [2023-04-01 23:44:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 554 [2023-04-01 23:44:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:16,716 INFO L225 Difference]: With dead ends: 114806 [2023-04-01 23:44:16,717 INFO L226 Difference]: Without dead ends: 57406 [2023-04-01 23:44:16,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:16,774 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 764 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:16,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 791 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:44:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57406 states. [2023-04-01 23:44:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57406 to 57406. [2023-04-01 23:44:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57406 states, 56423 states have (on average 1.0434929018308137) internal successors, (58877), 56682 states have internal predecessors, (58877), 242 states have call successors, (242), 242 states have call predecessors, (242), 740 states have return successors, (3857), 481 states have call predecessors, (3857), 241 states have call successors, (3857) [2023-04-01 23:44:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57406 states to 57406 states and 62976 transitions. [2023-04-01 23:44:17,715 INFO L78 Accepts]: Start accepts. Automaton has 57406 states and 62976 transitions. Word has length 554 [2023-04-01 23:44:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:17,715 INFO L495 AbstractCegarLoop]: Abstraction has 57406 states and 62976 transitions. [2023-04-01 23:44:17,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 57406 states and 62976 transitions. [2023-04-01 23:44:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-04-01 23:44:17,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:17,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:17,757 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 23:44:17,949 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 23:44:17,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:17,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1223132289, now seen corresponding path program 1 times [2023-04-01 23:44:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:17,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382412428] [2023-04-01 23:44:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-04-01 23:44:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-04-01 23:44:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382412428] [2023-04-01 23:44:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382412428] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54568978] [2023-04-01 23:44:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:18,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:18,762 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 23:44:18,764 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 23:44:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:18,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:18,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:19,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54568978] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:19,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:44:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642506795] [2023-04-01 23:44:19,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:44:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:19,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:44:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:19,552 INFO L87 Difference]: Start difference. First operand 57406 states and 62976 transitions. Second operand has 11 states, 11 states have (on average 84.45454545454545) internal successors, (929), 9 states have internal predecessors, (929), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:25,768 INFO L93 Difference]: Finished difference Result 120582 states and 132362 transitions. [2023-04-01 23:44:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 84.45454545454545) internal successors, (929), 9 states have internal predecessors, (929), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 748 [2023-04-01 23:44:25,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:25,916 INFO L225 Difference]: With dead ends: 120582 [2023-04-01 23:44:25,917 INFO L226 Difference]: Without dead ends: 60332 [2023-04-01 23:44:26,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1515 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:44:26,061 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3459 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10793 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 11529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 10793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:26,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 246 Invalid, 11529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 10793 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 23:44:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60332 states. [2023-04-01 23:44:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60332 to 54625. [2023-04-01 23:44:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54625 states, 53653 states have (on average 1.0291689187929844) internal successors, (55218), 53924 states have internal predecessors, (55218), 230 states have call successors, (230), 230 states have call predecessors, (230), 741 states have return successors, (2613), 470 states have call predecessors, (2613), 229 states have call successors, (2613) [2023-04-01 23:44:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54625 states to 54625 states and 58061 transitions. [2023-04-01 23:44:26,954 INFO L78 Accepts]: Start accepts. Automaton has 54625 states and 58061 transitions. Word has length 748 [2023-04-01 23:44:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:26,955 INFO L495 AbstractCegarLoop]: Abstraction has 54625 states and 58061 transitions. [2023-04-01 23:44:26,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.45454545454545) internal successors, (929), 9 states have internal predecessors, (929), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 54625 states and 58061 transitions. [2023-04-01 23:44:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-04-01 23:44:26,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:26,973 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:26,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:44:27,179 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 23:44:27,179 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:27,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1972045979, now seen corresponding path program 1 times [2023-04-01 23:44:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:27,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900372351] [2023-04-01 23:44:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:44:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-04-01 23:44:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900372351] [2023-04-01 23:44:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900372351] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133565390] [2023-04-01 23:44:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:27,772 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 23:44:27,774 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 23:44:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:27,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:44:27,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-04-01 23:44:28,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133565390] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351770391] [2023-04-01 23:44:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:28,017 INFO L87 Difference]: Start difference. First operand 54625 states and 58061 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:29,909 INFO L93 Difference]: Finished difference Result 114888 states and 122304 transitions. [2023-04-01 23:44:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 752 [2023-04-01 23:44:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:30,003 INFO L225 Difference]: With dead ends: 114888 [2023-04-01 23:44:30,003 INFO L226 Difference]: Without dead ends: 59565 [2023-04-01 23:44:30,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:30,045 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 664 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:30,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1041 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59565 states. [2023-04-01 23:44:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59565 to 58863. [2023-04-01 23:44:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58863 states, 57844 states have (on average 1.0280755134499688) internal successors, (59468), 58122 states have internal predecessors, (59468), 248 states have call successors, (248), 248 states have call predecessors, (248), 770 states have return successors, (2734), 492 states have call predecessors, (2734), 247 states have call successors, (2734) [2023-04-01 23:44:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58863 states to 58863 states and 62450 transitions. [2023-04-01 23:44:30,979 INFO L78 Accepts]: Start accepts. Automaton has 58863 states and 62450 transitions. Word has length 752 [2023-04-01 23:44:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:30,980 INFO L495 AbstractCegarLoop]: Abstraction has 58863 states and 62450 transitions. [2023-04-01 23:44:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 58863 states and 62450 transitions. [2023-04-01 23:44:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-04-01 23:44:31,004 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:31,004 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:31,010 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 23:44:31,208 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 23:44:31,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:31,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -48274680, now seen corresponding path program 1 times [2023-04-01 23:44:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441668656] [2023-04-01 23:44:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:31,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:44:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-04-01 23:44:31,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:31,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441668656] [2023-04-01 23:44:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441668656] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:31,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766179287] [2023-04-01 23:44:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:31,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:31,857 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 23:44:31,860 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 23:44:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:32,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:32,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-04-01 23:44:32,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766179287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188042147] [2023-04-01 23:44:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:32,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:32,089 INFO L87 Difference]: Start difference. First operand 58863 states and 62450 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:34,059 INFO L93 Difference]: Finished difference Result 123330 states and 130817 transitions. [2023-04-01 23:44:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:34,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 771 [2023-04-01 23:44:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:34,182 INFO L225 Difference]: With dead ends: 123330 [2023-04-01 23:44:34,182 INFO L226 Difference]: Without dead ends: 63769 [2023-04-01 23:44:34,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:34,237 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 663 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1003 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:44:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63769 states. [2023-04-01 23:44:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63769 to 62363. [2023-04-01 23:44:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62363 states, 61318 states have (on average 1.0237939919762549) internal successors, (62777), 61594 states have internal predecessors, (62777), 263 states have call successors, (263), 263 states have call predecessors, (263), 781 states have return successors, (2500), 505 states have call predecessors, (2500), 262 states have call successors, (2500) [2023-04-01 23:44:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62363 states to 62363 states and 65540 transitions. [2023-04-01 23:44:35,291 INFO L78 Accepts]: Start accepts. Automaton has 62363 states and 65540 transitions. Word has length 771 [2023-04-01 23:44:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:35,291 INFO L495 AbstractCegarLoop]: Abstraction has 62363 states and 65540 transitions. [2023-04-01 23:44:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 62363 states and 65540 transitions. [2023-04-01 23:44:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2023-04-01 23:44:35,343 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:35,344 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:44:35,362 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 23:44:35,549 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 23:44:35,550 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:35,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -88993499, now seen corresponding path program 1 times [2023-04-01 23:44:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943949320] [2023-04-01 23:44:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-04-01 23:44:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2023-04-01 23:44:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-04-01 23:44:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:44:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 365 proven. 144 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2023-04-01 23:44:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943949320] [2023-04-01 23:44:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943949320] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563341137] [2023-04-01 23:44:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:36,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:37,003 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 23:44:37,052 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 23:44:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:37,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:44:37,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2023-04-01 23:44:37,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:37,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563341137] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:37,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:37,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:44:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95887512] [2023-04-01 23:44:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:44:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:44:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:37,694 INFO L87 Difference]: Start difference. First operand 62363 states and 65540 transitions. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 4 states have internal predecessors, (717), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 23:44:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:39,791 INFO L93 Difference]: Finished difference Result 120537 states and 126799 transitions. [2023-04-01 23:44:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:44:39,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 4 states have internal predecessors, (717), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 1046 [2023-04-01 23:44:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:39,925 INFO L225 Difference]: With dead ends: 120537 [2023-04-01 23:44:39,925 INFO L226 Difference]: Without dead ends: 58890 [2023-04-01 23:44:39,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:44:39,988 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1534 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:40,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 107 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:44:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58890 states. [2023-04-01 23:44:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58890 to 58182. [2023-04-01 23:44:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58182 states, 57158 states have (on average 1.022131635116694) internal successors, (58423), 57448 states have internal predecessors, (58423), 245 states have call successors, (245), 245 states have call predecessors, (245), 778 states have return successors, (2211), 488 states have call predecessors, (2211), 244 states have call successors, (2211) [2023-04-01 23:44:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58182 states to 58182 states and 60879 transitions. [2023-04-01 23:44:40,979 INFO L78 Accepts]: Start accepts. Automaton has 58182 states and 60879 transitions. Word has length 1046 [2023-04-01 23:44:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:40,980 INFO L495 AbstractCegarLoop]: Abstraction has 58182 states and 60879 transitions. [2023-04-01 23:44:40,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 4 states have internal predecessors, (717), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 23:44:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 58182 states and 60879 transitions. [2023-04-01 23:44:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2023-04-01 23:44:41,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:41,015 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:44:41,039 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 23:44:41,229 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 23:44:41,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:41,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1918282826, now seen corresponding path program 1 times [2023-04-01 23:44:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008975259] [2023-04-01 23:44:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-04-01 23:44:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2023-04-01 23:44:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 323 proven. 76 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-04-01 23:44:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008975259] [2023-04-01 23:44:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008975259] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322643430] [2023-04-01 23:44:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:42,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:42,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:42,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:42,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:44:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:42,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:42,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 877 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-04-01 23:44:42,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 325 proven. 77 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-04-01 23:44:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322643430] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:42,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:42,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:44:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94465045] [2023-04-01 23:44:42,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:42,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:44:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:42,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:44:42,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:42,763 INFO L87 Difference]: Start difference. First operand 58182 states and 60879 transitions. Second operand has 11 states, 11 states have (on average 95.72727272727273) internal successors, (1053), 9 states have internal predecessors, (1053), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 23:44:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:47,585 INFO L93 Difference]: Finished difference Result 127978 states and 135133 transitions. [2023-04-01 23:44:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:44:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 95.72727272727273) internal successors, (1053), 9 states have internal predecessors, (1053), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1068 [2023-04-01 23:44:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:47,722 INFO L225 Difference]: With dead ends: 127978 [2023-04-01 23:44:47,722 INFO L226 Difference]: Without dead ends: 67662 [2023-04-01 23:44:47,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2183 GetRequests, 2158 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:44:47,777 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 4998 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 9984 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 10610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 9984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:47,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5003 Valid, 199 Invalid, 10610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 9984 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 23:44:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67662 states. [2023-04-01 23:44:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67662 to 67614. [2023-04-01 23:44:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67614 states, 66435 states have (on average 1.0180627681192143) internal successors, (67635), 66728 states have internal predecessors, (67635), 362 states have call successors, (362), 284 states have call predecessors, (362), 816 states have return successors, (3200), 601 states have call predecessors, (3200), 361 states have call successors, (3200) [2023-04-01 23:44:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67614 states to 67614 states and 71197 transitions. [2023-04-01 23:44:48,730 INFO L78 Accepts]: Start accepts. Automaton has 67614 states and 71197 transitions. Word has length 1068 [2023-04-01 23:44:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:48,730 INFO L495 AbstractCegarLoop]: Abstraction has 67614 states and 71197 transitions. [2023-04-01 23:44:48,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 95.72727272727273) internal successors, (1053), 9 states have internal predecessors, (1053), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 23:44:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 67614 states and 71197 transitions. [2023-04-01 23:44:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2023-04-01 23:44:48,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:48,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:44:48,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-04-01 23:44:48,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:44:48,969 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:48,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1161236879, now seen corresponding path program 1 times [2023-04-01 23:44:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:48,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745814448] [2023-04-01 23:44:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:44:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-04-01 23:44:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 858 proven. 2 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-04-01 23:44:51,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745814448] [2023-04-01 23:44:51,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745814448] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356868119] [2023-04-01 23:44:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:51,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:51,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:51,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:51,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:44:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:51,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:44:51,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 862 proven. 2 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2023-04-01 23:44:51,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 862 proven. 2 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2023-04-01 23:44:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356868119] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:52,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 15 [2023-04-01 23:44:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718419086] [2023-04-01 23:44:52,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:44:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:44:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:44:52,759 INFO L87 Difference]: Start difference. First operand 67614 states and 71197 transitions. Second operand has 15 states, 15 states have (on average 110.86666666666666) internal successors, (1663), 13 states have internal predecessors, (1663), 6 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:45:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:01,056 INFO L93 Difference]: Finished difference Result 165164 states and 175559 transitions. [2023-04-01 23:45:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-01 23:45:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 110.86666666666666) internal successors, (1663), 13 states have internal predecessors, (1663), 6 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1155 [2023-04-01 23:45:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:01,301 INFO L225 Difference]: With dead ends: 165164 [2023-04-01 23:45:01,301 INFO L226 Difference]: Without dead ends: 98970 [2023-04-01 23:45:01,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2391 GetRequests, 2343 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=436, Invalid=1544, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 23:45:01,363 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5008 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13515 mSolverCounterSat, 1729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 15244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1729 IncrementalHoareTripleChecker+Valid, 13515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:01,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 276 Invalid, 15244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1729 Valid, 13515 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 23:45:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98970 states. [2023-04-01 23:45:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98970 to 96629. [2023-04-01 23:45:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96629 states, 95130 states have (on average 1.0164827078734364) internal successors, (96698), 95447 states have internal predecessors, (96698), 520 states have call successors, (520), 407 states have call predecessors, (520), 978 states have return successors, (4425), 774 states have call predecessors, (4425), 519 states have call successors, (4425) [2023-04-01 23:45:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96629 states to 96629 states and 101643 transitions. [2023-04-01 23:45:02,802 INFO L78 Accepts]: Start accepts. Automaton has 96629 states and 101643 transitions. Word has length 1155 [2023-04-01 23:45:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:02,803 INFO L495 AbstractCegarLoop]: Abstraction has 96629 states and 101643 transitions. [2023-04-01 23:45:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.86666666666666) internal successors, (1663), 13 states have internal predecessors, (1663), 6 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:45:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 96629 states and 101643 transitions. [2023-04-01 23:45:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-04-01 23:45:03,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:03,065 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, 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, 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, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:45:03,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:03,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:03,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:03,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2133174063, now seen corresponding path program 1 times [2023-04-01 23:45:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946203138] [2023-04-01 23:45:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:45:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-04-01 23:45:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-04-01 23:45:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2023-04-01 23:45:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 844 [2023-04-01 23:45:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2023-04-01 23:45:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 613 proven. 144 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2023-04-01 23:45:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946203138] [2023-04-01 23:45:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946203138] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976812638] [2023-04-01 23:45:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:04,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:04,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:04,833 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:04,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:45:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:05,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:45:05,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 1952 trivial. 0 not checked. [2023-04-01 23:45:05,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:05,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976812638] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:05,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:05,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:45:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416263182] [2023-04-01 23:45:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:45:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:45:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:45:05,495 INFO L87 Difference]: Start difference. First operand 96629 states and 101643 transitions. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 4 states have internal predecessors, (532), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:45:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:08,022 INFO L93 Difference]: Finished difference Result 190711 states and 199261 transitions. [2023-04-01 23:45:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:45:08,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 4 states have internal predecessors, (532), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1385 [2023-04-01 23:45:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:08,309 INFO L225 Difference]: With dead ends: 190711 [2023-04-01 23:45:08,309 INFO L226 Difference]: Without dead ends: 98310 [2023-04-01 23:45:08,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1418 GetRequests, 1406 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:45:08,365 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1899 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:08,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 99 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:45:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98310 states. [2023-04-01 23:45:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98310 to 94082. [2023-04-01 23:45:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94082 states, 92710 states have (on average 1.0166756552691187) internal successors, (94256), 93028 states have internal predecessors, (94256), 398 states have call successors, (398), 398 states have call predecessors, (398), 973 states have return successors, (2927), 655 states have call predecessors, (2927), 397 states have call successors, (2927) [2023-04-01 23:45:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94082 states to 94082 states and 97581 transitions. [2023-04-01 23:45:09,754 INFO L78 Accepts]: Start accepts. Automaton has 94082 states and 97581 transitions. Word has length 1385 [2023-04-01 23:45:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:09,755 INFO L495 AbstractCegarLoop]: Abstraction has 94082 states and 97581 transitions. [2023-04-01 23:45:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 4 states have internal predecessors, (532), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:45:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 94082 states and 97581 transitions. [2023-04-01 23:45:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1868 [2023-04-01 23:45:09,814 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:09,815 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:09,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 23:45:10,025 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:10,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -870526617, now seen corresponding path program 1 times [2023-04-01 23:45:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675395782] [2023-04-01 23:45:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:45:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:45:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:45:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1326 [2023-04-01 23:45:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1422 [2023-04-01 23:45:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 1529 proven. 448 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2023-04-01 23:45:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675395782] [2023-04-01 23:45:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675395782] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437821925] [2023-04-01 23:45:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:12,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:12,839 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:12,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:45:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:13,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:13,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 3387 trivial. 0 not checked. [2023-04-01 23:45:13,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437821925] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:13,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 23:45:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845232550] [2023-04-01 23:45:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:45:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:45:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:13,368 INFO L87 Difference]: Start difference. First operand 94082 states and 97581 transitions. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:45:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:15,439 INFO L93 Difference]: Finished difference Result 200844 states and 208545 transitions. [2023-04-01 23:45:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:45:15,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 1867 [2023-04-01 23:45:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:15,681 INFO L225 Difference]: With dead ends: 200844 [2023-04-01 23:45:15,681 INFO L226 Difference]: Without dead ends: 110283 [2023-04-01 23:45:15,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1899 GetRequests, 1889 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:15,764 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 664 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:15,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1010 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:45:15,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110283 states. [2023-04-01 23:45:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110283 to 108877. [2023-04-01 23:45:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108877 states, 107357 states have (on average 1.0158722766098158) internal successors, (109061), 107688 states have internal predecessors, (109061), 461 states have call successors, (461), 461 states have call predecessors, (461), 1058 states have return successors, (3297), 727 states have call predecessors, (3297), 460 states have call successors, (3297) [2023-04-01 23:45:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108877 states to 108877 states and 112819 transitions. [2023-04-01 23:45:17,495 INFO L78 Accepts]: Start accepts. Automaton has 108877 states and 112819 transitions. Word has length 1867 [2023-04-01 23:45:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:17,496 INFO L495 AbstractCegarLoop]: Abstraction has 108877 states and 112819 transitions. [2023-04-01 23:45:17,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:45:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 108877 states and 112819 transitions. [2023-04-01 23:45:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2365 [2023-04-01 23:45:17,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:17,674 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:45:17,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:45:17,882 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:17,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash -325013366, now seen corresponding path program 1 times [2023-04-01 23:45:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:17,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146528737] [2023-04-01 23:45:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:45:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2023-04-01 23:45:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1163 [2023-04-01 23:45:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1237 [2023-04-01 23:45:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1449 [2023-04-01 23:45:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1907 [2023-04-01 23:45:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5626 backedges. 683 proven. 215 refuted. 0 times theorem prover too weak. 4728 trivial. 0 not checked. [2023-04-01 23:45:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146528737] [2023-04-01 23:45:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146528737] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071386178] [2023-04-01 23:45:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:19,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:19,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:19,679 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:19,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:45:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:20,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:45:20,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5626 backedges. 3600 proven. 2 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2023-04-01 23:45:20,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5626 backedges. 687 proven. 218 refuted. 0 times theorem prover too weak. 4721 trivial. 0 not checked. [2023-04-01 23:45:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071386178] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:20,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:45:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115663090] [2023-04-01 23:45:20,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:45:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:45:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:45:20,604 INFO L87 Difference]: Start difference. First operand 108877 states and 112819 transitions. Second operand has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 9 states have internal predecessors, (1207), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:45:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:26,226 INFO L93 Difference]: Finished difference Result 217867 states and 225834 transitions. [2023-04-01 23:45:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:45:26,226 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 9 states have internal predecessors, (1207), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 2364 [2023-04-01 23:45:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:26,469 INFO L225 Difference]: With dead ends: 217867 [2023-04-01 23:45:26,470 INFO L226 Difference]: Without dead ends: 113216 [2023-04-01 23:45:26,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4790 GetRequests, 4764 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:45:26,557 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2927 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 8409 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2928 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 9003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 8409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:26,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2928 Valid, 185 Invalid, 9003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 8409 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 23:45:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113216 states. [2023-04-01 23:45:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113216 to 108251. [2023-04-01 23:45:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108251 states, 106706 states have (on average 1.0134387944445487) internal successors, (108140), 107054 states have internal predecessors, (108140), 458 states have call successors, (458), 458 states have call predecessors, (458), 1086 states have return successors, (2839), 738 states have call predecessors, (2839), 457 states have call successors, (2839) [2023-04-01 23:45:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108251 states to 108251 states and 111437 transitions. [2023-04-01 23:45:28,261 INFO L78 Accepts]: Start accepts. Automaton has 108251 states and 111437 transitions. Word has length 2364 [2023-04-01 23:45:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:28,262 INFO L495 AbstractCegarLoop]: Abstraction has 108251 states and 111437 transitions. [2023-04-01 23:45:28,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 9 states have internal predecessors, (1207), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:45:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 108251 states and 111437 transitions. [2023-04-01 23:45:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2486 [2023-04-01 23:45:28,635 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:28,636 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:45:28,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:28,843 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:28,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash -36152455, now seen corresponding path program 1 times [2023-04-01 23:45:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645117971] [2023-04-01 23:45:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:45:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2023-04-01 23:45:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1156 [2023-04-01 23:45:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1358 [2023-04-01 23:45:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1570 [2023-04-01 23:45:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2028 [2023-04-01 23:45:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 601 proven. 643 refuted. 0 times theorem prover too weak. 5146 trivial. 0 not checked. [2023-04-01 23:45:33,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:33,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645117971] [2023-04-01 23:45:33,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645117971] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:33,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286016700] [2023-04-01 23:45:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:33,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:33,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:33,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:33,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-01 23:45:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:34,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:45:34,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 2222 proven. 5 refuted. 0 times theorem prover too weak. 4163 trivial. 0 not checked. [2023-04-01 23:45:34,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 2222 proven. 5 refuted. 0 times theorem prover too weak. 4163 trivial. 0 not checked. [2023-04-01 23:45:35,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286016700] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:35,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:35,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2023-04-01 23:45:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994995180] [2023-04-01 23:45:35,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 23:45:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:35,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 23:45:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:45:35,889 INFO L87 Difference]: Start difference. First operand 108251 states and 111437 transitions. Second operand has 20 states, 19 states have (on average 81.94736842105263) internal successors, (1557), 17 states have internal predecessors, (1557), 9 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2023-04-01 23:45:48,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:48,901 INFO L93 Difference]: Finished difference Result 220783 states and 227579 transitions. [2023-04-01 23:45:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-04-01 23:45:48,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 81.94736842105263) internal successors, (1557), 17 states have internal predecessors, (1557), 9 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 2485 [2023-04-01 23:45:48,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:48,903 INFO L225 Difference]: With dead ends: 220783 [2023-04-01 23:45:48,903 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:45:49,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5145 GetRequests, 5057 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1237, Invalid=6419, Unknown=0, NotChecked=0, Total=7656 [2023-04-01 23:45:49,007 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 23906 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 21392 mSolverCounterSat, 1714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23906 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 23106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1714 IncrementalHoareTripleChecker+Valid, 21392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:49,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23906 Valid, 987 Invalid, 23106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1714 Valid, 21392 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-04-01 23:45:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:45:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:45:49,007 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 23:45:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:45:49,008 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2485 [2023-04-01 23:45:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:49,008 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:45:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 81.94736842105263) internal successors, (1557), 17 states have internal predecessors, (1557), 9 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2023-04-01 23:45:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:45:49,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:45:49,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:45:49,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:49,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 23:46:32,932 WARN L223 SmtUtils]: Spent 41.14s on a formula simplification. DAG size of input: 567 DAG size of output: 387 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-01 23:47:20,461 WARN L223 SmtUtils]: Spent 40.68s on a formula simplification. DAG size of input: 567 DAG size of output: 387 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)