/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:24:54,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:24:54,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:24:54,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:24:54,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:24:54,529 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:24:54,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:24:54,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:24:54,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:24:54,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:24:54,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:24:54,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:24:54,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:24:54,532 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:24:54,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:24:54,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:24:54,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:24:54,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:24:54,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:24:54,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:24:54,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:24:54,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:24:54,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:24:54,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:24:54,536 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:24:54,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:24:54,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:24:54,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:24:54,768 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:24:54,768 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:24:54,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label17.c [2023-04-01 22:24:55,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:24:56,375 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:24:56,376 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label17.c [2023-04-01 22:24:56,412 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e834ae4b1/de48baffb6fa45ee8aac889292066289/FLAG01f74bfeb [2023-04-01 22:24:56,427 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e834ae4b1/de48baffb6fa45ee8aac889292066289 [2023-04-01 22:24:56,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:24:56,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:24:56,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:24:56,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:24:56,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:24:56,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:24:56" (1/1) ... [2023-04-01 22:24:56,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152d9485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:56, skipping insertion in model container [2023-04-01 22:24:56,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:24:56" (1/1) ... [2023-04-01 22:24:56,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:24:56,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:24:56,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label17.c[5134,5147] [2023-04-01 22:24:57,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:57,439 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:24:57,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label17.c[5134,5147] [2023-04-01 22:24:57,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:57,849 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:24:57,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57 WrapperNode [2023-04-01 22:24:57,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:24:57,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:24:57,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:24:57,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:24:57,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:57,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:57,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:57,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:57,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:58,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:58,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:58,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:58,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:24:58,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:24:58,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:24:58,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:24:58,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (1/1) ... [2023-04-01 22:24:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:24:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:58,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:24:58,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:24:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:24:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:24:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:24:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:24:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:24:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:24:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:24:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:24:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:24:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:24:58,251 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:24:58,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:25:01,997 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:25:02,016 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:25:02,016 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:25:02,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:02 BoogieIcfgContainer [2023-04-01 22:25:02,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:25:02,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:25:02,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:25:02,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:25:02,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:24:56" (1/3) ... [2023-04-01 22:25:02,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:02, skipping insertion in model container [2023-04-01 22:25:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:57" (2/3) ... [2023-04-01 22:25:02,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:02, skipping insertion in model container [2023-04-01 22:25:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:02" (3/3) ... [2023-04-01 22:25:02,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17.c [2023-04-01 22:25:02,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:25:02,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:25:02,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:25:02,126 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;@5fe63a2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:25:02,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:25:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:25:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 22:25:02,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:02,143 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] [2023-04-01 22:25:02,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:02,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -775863387, now seen corresponding path program 1 times [2023-04-01 22:25:02,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734576887] [2023-04-01 22:25:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:02,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734576887] [2023-04-01 22:25:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734576887] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:02,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:02,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:25:02,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753237706] [2023-04-01 22:25:02,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:02,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:02,687 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:25:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:09,918 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2023-04-01 22:25:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:25:09,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 46 [2023-04-01 22:25:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:09,946 INFO L225 Difference]: With dead ends: 3253 [2023-04-01 22:25:09,947 INFO L226 Difference]: Without dead ends: 2346 [2023-04-01 22:25:09,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:25:09,962 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5003 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 1969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1969 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:09,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5003 Valid, 58 Invalid, 6288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1969 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 22:25:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2023-04-01 22:25:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2023-04-01 22:25:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2295 states have (on average 1.6435729847494553) internal successors, (3772), 2297 states have internal predecessors, (3772), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (48), 19 states have call predecessors, (48), 13 states have call successors, (48) [2023-04-01 22:25:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2023-04-01 22:25:10,156 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 46 [2023-04-01 22:25:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:10,158 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2023-04-01 22:25:10,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:25:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2023-04-01 22:25:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 22:25:10,171 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:10,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:25:10,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:10,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2044501128, now seen corresponding path program 1 times [2023-04-01 22:25:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:10,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725905668] [2023-04-01 22:25:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:10,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725905668] [2023-04-01 22:25:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725905668] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:10,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:25:10,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127896506] [2023-04-01 22:25:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:25:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:25:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:10,772 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:18,403 INFO L93 Difference]: Finished difference Result 9466 states and 16032 transitions. [2023-04-01 22:25:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:25:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 124 [2023-04-01 22:25:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:18,439 INFO L225 Difference]: With dead ends: 9466 [2023-04-01 22:25:18,440 INFO L226 Difference]: Without dead ends: 7141 [2023-04-01 22:25:18,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:25:18,448 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4325 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6937 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 9078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 6937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:18,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 129 Invalid, 9078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2141 Valid, 6937 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:25:18,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2023-04-01 22:25:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 7092. [2023-04-01 22:25:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 6949 states have (on average 1.4459634479781263) internal successors, (10048), 6969 states have internal predecessors, (10048), 38 states have call successors, (38), 38 states have call predecessors, (38), 104 states have return successors, (507), 84 states have call predecessors, (507), 37 states have call successors, (507) [2023-04-01 22:25:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 10593 transitions. [2023-04-01 22:25:18,693 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 10593 transitions. Word has length 124 [2023-04-01 22:25:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:18,695 INFO L495 AbstractCegarLoop]: Abstraction has 7092 states and 10593 transitions. [2023-04-01 22:25:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 10593 transitions. [2023-04-01 22:25:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 22:25:18,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:18,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:18,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:25:18,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:18,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash 247060328, now seen corresponding path program 1 times [2023-04-01 22:25:18,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:18,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296958735] [2023-04-01 22:25:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:18,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:19,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296958735] [2023-04-01 22:25:19,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296958735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:19,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:19,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:25:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616420700] [2023-04-01 22:25:19,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:25:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:25:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:19,077 INFO L87 Difference]: Start difference. First operand 7092 states and 10593 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:23,457 INFO L93 Difference]: Finished difference Result 16669 states and 24832 transitions. [2023-04-01 22:25:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:25:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2023-04-01 22:25:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:23,494 INFO L225 Difference]: With dead ends: 16669 [2023-04-01 22:25:23,494 INFO L226 Difference]: Without dead ends: 9583 [2023-04-01 22:25:23,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:25:23,513 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6375 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6375 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 5754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6375 Valid, 122 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 22:25:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2023-04-01 22:25:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 9520. [2023-04-01 22:25:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9520 states, 9305 states have (on average 1.3276732939279956) internal successors, (12354), 9342 states have internal predecessors, (12354), 50 states have call successors, (50), 50 states have call predecessors, (50), 164 states have return successors, (788), 127 states have call predecessors, (788), 49 states have call successors, (788) [2023-04-01 22:25:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 13192 transitions. [2023-04-01 22:25:23,742 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 13192 transitions. Word has length 140 [2023-04-01 22:25:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:23,743 INFO L495 AbstractCegarLoop]: Abstraction has 9520 states and 13192 transitions. [2023-04-01 22:25:23,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 13192 transitions. [2023-04-01 22:25:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-04-01 22:25:23,747 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:23,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:25:23,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:23,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1313463163, now seen corresponding path program 1 times [2023-04-01 22:25:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880551248] [2023-04-01 22:25:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-01 22:25:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:25:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880551248] [2023-04-01 22:25:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880551248] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807725627] [2023-04-01 22:25:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:24,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:24,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:24,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:25:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:24,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:25:24,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:25:24,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:24,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807725627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:24,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:24,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 22:25:24,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057691473] [2023-04-01 22:25:24,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:24,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:24,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:24,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:25:24,520 INFO L87 Difference]: Start difference. First operand 9520 states and 13192 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:28,640 INFO L93 Difference]: Finished difference Result 28819 states and 42775 transitions. [2023-04-01 22:25:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:25:28,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 208 [2023-04-01 22:25:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:28,732 INFO L225 Difference]: With dead ends: 28819 [2023-04-01 22:25:28,732 INFO L226 Difference]: Without dead ends: 19305 [2023-04-01 22:25:28,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:25:28,760 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2238 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4742 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 4742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:28,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 117 Invalid, 5758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1016 Valid, 4742 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 22:25:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19305 states. [2023-04-01 22:25:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19305 to 19121. [2023-04-01 22:25:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19121 states, 18656 states have (on average 1.3033340480274442) internal successors, (24315), 18758 states have internal predecessors, (24315), 98 states have call successors, (98), 98 states have call predecessors, (98), 366 states have return successors, (2866), 264 states have call predecessors, (2866), 97 states have call successors, (2866) [2023-04-01 22:25:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19121 states to 19121 states and 27279 transitions. [2023-04-01 22:25:29,331 INFO L78 Accepts]: Start accepts. Automaton has 19121 states and 27279 transitions. Word has length 208 [2023-04-01 22:25:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:29,332 INFO L495 AbstractCegarLoop]: Abstraction has 19121 states and 27279 transitions. [2023-04-01 22:25:29,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 19121 states and 27279 transitions. [2023-04-01 22:25:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-04-01 22:25:29,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:29,338 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:25:29,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:29,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:29,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:29,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1291386494, now seen corresponding path program 1 times [2023-04-01 22:25:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884565333] [2023-04-01 22:25:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:25:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 147 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:25:30,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:30,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884565333] [2023-04-01 22:25:30,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884565333] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:30,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098799431] [2023-04-01 22:25:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:30,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:30,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:25:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:30,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:25:30,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:25:30,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098799431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:30,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:30,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:25:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673096089] [2023-04-01 22:25:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:25:30,454 INFO L87 Difference]: Start difference. First operand 19121 states and 27279 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:25:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:34,941 INFO L93 Difference]: Finished difference Result 56511 states and 84029 transitions. [2023-04-01 22:25:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:25:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 215 [2023-04-01 22:25:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:35,096 INFO L225 Difference]: With dead ends: 56511 [2023-04-01 22:25:35,096 INFO L226 Difference]: Without dead ends: 37396 [2023-04-01 22:25:35,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:25:35,142 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2813 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:35,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2813 Valid, 100 Invalid, 5023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 22:25:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37396 states. [2023-04-01 22:25:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37396 to 31874. [2023-04-01 22:25:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31874 states, 31097 states have (on average 1.2653632183168795) internal successors, (39349), 31270 states have internal predecessors, (39349), 162 states have call successors, (162), 162 states have call predecessors, (162), 614 states have return successors, (5453), 441 states have call predecessors, (5453), 161 states have call successors, (5453) [2023-04-01 22:25:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31874 states to 31874 states and 44964 transitions. [2023-04-01 22:25:36,036 INFO L78 Accepts]: Start accepts. Automaton has 31874 states and 44964 transitions. Word has length 215 [2023-04-01 22:25:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:36,037 INFO L495 AbstractCegarLoop]: Abstraction has 31874 states and 44964 transitions. [2023-04-01 22:25:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:25:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 31874 states and 44964 transitions. [2023-04-01 22:25:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-04-01 22:25:36,043 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:36,043 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:25:36,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:36,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:36,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1069832270, now seen corresponding path program 1 times [2023-04-01 22:25:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299503659] [2023-04-01 22:25:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-01 22:25:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:25:36,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299503659] [2023-04-01 22:25:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299503659] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103580955] [2023-04-01 22:25:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:36,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:36,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:36,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:36,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:25:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:36,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:25:36,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:25:36,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:36,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103580955] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:36,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:36,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:25:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56780838] [2023-04-01 22:25:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:36,955 INFO L87 Difference]: Start difference. First operand 31874 states and 44964 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:42,329 INFO L93 Difference]: Finished difference Result 92772 states and 137392 transitions. [2023-04-01 22:25:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:25:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 255 [2023-04-01 22:25:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:42,556 INFO L225 Difference]: With dead ends: 92772 [2023-04-01 22:25:42,556 INFO L226 Difference]: Without dead ends: 60904 [2023-04-01 22:25:42,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:25:42,612 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2337 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4819 mSolverCounterSat, 1172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 5991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1172 IncrementalHoareTripleChecker+Valid, 4819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:42,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 137 Invalid, 5991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1172 Valid, 4819 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 22:25:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60904 states. [2023-04-01 22:25:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60904 to 57614. [2023-04-01 22:25:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57614 states, 56117 states have (on average 1.1922768501523602) internal successors, (66907), 56486 states have internal predecessors, (66907), 290 states have call successors, (290), 290 states have call predecessors, (290), 1206 states have return successors, (12431), 837 states have call predecessors, (12431), 289 states have call successors, (12431) [2023-04-01 22:25:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57614 states to 57614 states and 79628 transitions. [2023-04-01 22:25:44,087 INFO L78 Accepts]: Start accepts. Automaton has 57614 states and 79628 transitions. Word has length 255 [2023-04-01 22:25:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:44,088 INFO L495 AbstractCegarLoop]: Abstraction has 57614 states and 79628 transitions. [2023-04-01 22:25:44,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 57614 states and 79628 transitions. [2023-04-01 22:25:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-01 22:25:44,095 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:44,095 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:44,103 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 22:25:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:44,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:44,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1952220511, now seen corresponding path program 1 times [2023-04-01 22:25:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110820255] [2023-04-01 22:25:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:25:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110820255] [2023-04-01 22:25:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110820255] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553280342] [2023-04-01 22:25:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:44,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:44,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:44,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:44,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:25:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:44,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:45,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553280342] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:45,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:25:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978585114] [2023-04-01 22:25:45,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:25:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:25:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:45,798 INFO L87 Difference]: Start difference. First operand 57614 states and 79628 transitions. Second operand has 12 states, 12 states have (on average 47.083333333333336) internal successors, (565), 10 states have internal predecessors, (565), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:25:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:55,559 INFO L93 Difference]: Finished difference Result 137381 states and 195271 transitions. [2023-04-01 22:25:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:25:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 47.083333333333336) internal successors, (565), 10 states have internal predecessors, (565), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 320 [2023-04-01 22:25:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:56,110 INFO L225 Difference]: With dead ends: 137381 [2023-04-01 22:25:56,110 INFO L226 Difference]: Without dead ends: 79773 [2023-04-01 22:25:56,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:25:56,184 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5510 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 12126 mSolverCounterSat, 2544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5517 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 14670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2544 IncrementalHoareTripleChecker+Valid, 12126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:56,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5517 Valid, 183 Invalid, 14670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2544 Valid, 12126 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 22:25:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79773 states. [2023-04-01 22:25:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79773 to 76402. [2023-04-01 22:25:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76402 states, 74321 states have (on average 1.122092006297009) internal successors, (83395), 74816 states have internal predecessors, (83395), 455 states have call successors, (455), 382 states have call predecessors, (455), 1625 states have return successors, (15889), 1203 states have call predecessors, (15889), 454 states have call successors, (15889) [2023-04-01 22:25:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76402 states to 76402 states and 99739 transitions. [2023-04-01 22:25:57,862 INFO L78 Accepts]: Start accepts. Automaton has 76402 states and 99739 transitions. Word has length 320 [2023-04-01 22:25:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:57,863 INFO L495 AbstractCegarLoop]: Abstraction has 76402 states and 99739 transitions. [2023-04-01 22:25:57,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.083333333333336) internal successors, (565), 10 states have internal predecessors, (565), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:25:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 76402 states and 99739 transitions. [2023-04-01 22:25:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-04-01 22:25:57,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:57,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:25:57,888 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 22:25:58,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:58,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:58,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1343257635, now seen corresponding path program 1 times [2023-04-01 22:25:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986335942] [2023-04-01 22:25:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:25:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986335942] [2023-04-01 22:25:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986335942] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869332649] [2023-04-01 22:25:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:59,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:25:59,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:25:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:59,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:59,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:59,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869332649] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:26:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145787237] [2023-04-01 22:26:00,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:00,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:26:00,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:26:00,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:00,303 INFO L87 Difference]: Start difference. First operand 76402 states and 99739 transitions. Second operand has 11 states, 11 states have (on average 72.18181818181819) internal successors, (794), 9 states have internal predecessors, (794), 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 22:26:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:08,224 INFO L93 Difference]: Finished difference Result 173234 states and 229068 transitions. [2023-04-01 22:26:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:26:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 72.18181818181819) internal successors, (794), 9 states have internal predecessors, (794), 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 398 [2023-04-01 22:26:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:08,684 INFO L225 Difference]: With dead ends: 173234 [2023-04-01 22:26:08,684 INFO L226 Difference]: Without dead ends: 96842 [2023-04-01 22:26:08,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 799 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:26:08,784 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 4097 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8800 mSolverCounterSat, 1898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 10698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1898 IncrementalHoareTripleChecker+Valid, 8800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:08,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4097 Valid, 215 Invalid, 10698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1898 Valid, 8800 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:26:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96842 states. [2023-04-01 22:26:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96842 to 96733. [2023-04-01 22:26:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96733 states, 94300 states have (on average 1.0994697773064688) internal successors, (103680), 94857 states have internal predecessors, (103680), 578 states have call successors, (578), 486 states have call predecessors, (578), 1854 states have return successors, (17962), 1389 states have call predecessors, (17962), 577 states have call successors, (17962) [2023-04-01 22:26:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96733 states to 96733 states and 122220 transitions. [2023-04-01 22:26:11,044 INFO L78 Accepts]: Start accepts. Automaton has 96733 states and 122220 transitions. Word has length 398 [2023-04-01 22:26:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:11,045 INFO L495 AbstractCegarLoop]: Abstraction has 96733 states and 122220 transitions. [2023-04-01 22:26:11,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.18181818181819) internal successors, (794), 9 states have internal predecessors, (794), 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 22:26:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96733 states and 122220 transitions. [2023-04-01 22:26:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-04-01 22:26:11,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:11,061 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:11,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:11,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:11,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:11,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1713477128, now seen corresponding path program 1 times [2023-04-01 22:26:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:11,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506418021] [2023-04-01 22:26:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:11,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:26:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-01 22:26:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-04-01 22:26:11,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506418021] [2023-04-01 22:26:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506418021] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026653773] [2023-04-01 22:26:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:11,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:11,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:11,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:26:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:12,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:12,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 22:26:12,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 22:26:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026653773] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:12,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:12,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:26:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505444591] [2023-04-01 22:26:12,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:26:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:26:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:12,645 INFO L87 Difference]: Start difference. First operand 96733 states and 122220 transitions. Second operand has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:26:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:20,337 INFO L93 Difference]: Finished difference Result 193770 states and 245228 transitions. [2023-04-01 22:26:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:26:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 414 [2023-04-01 22:26:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:20,619 INFO L225 Difference]: With dead ends: 193770 [2023-04-01 22:26:20,619 INFO L226 Difference]: Without dead ends: 97047 [2023-04-01 22:26:20,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 842 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:26:20,842 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3671 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 8948 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3671 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 10617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 8948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:20,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3671 Valid, 289 Invalid, 10617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 8948 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:26:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97047 states. [2023-04-01 22:26:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97047 to 93081. [2023-04-01 22:26:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93081 states, 90616 states have (on average 1.082722697978282) internal successors, (98112), 91202 states have internal predecessors, (98112), 554 states have call successors, (554), 466 states have call predecessors, (554), 1910 states have return successors, (14526), 1412 states have call predecessors, (14526), 553 states have call successors, (14526) [2023-04-01 22:26:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93081 states to 93081 states and 113192 transitions. [2023-04-01 22:26:22,598 INFO L78 Accepts]: Start accepts. Automaton has 93081 states and 113192 transitions. Word has length 414 [2023-04-01 22:26:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:22,599 INFO L495 AbstractCegarLoop]: Abstraction has 93081 states and 113192 transitions. [2023-04-01 22:26:22,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:26:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 93081 states and 113192 transitions. [2023-04-01 22:26:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-04-01 22:26:22,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:22,633 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:22,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:22,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:22,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:22,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash -269673860, now seen corresponding path program 1 times [2023-04-01 22:26:22,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:22,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238676469] [2023-04-01 22:26:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:26:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:26:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238676469] [2023-04-01 22:26:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238676469] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602847560] [2023-04-01 22:26:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:23,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:26:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:23,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:23,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:26:23,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602847560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:26:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635204781] [2023-04-01 22:26:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:23,677 INFO L87 Difference]: Start difference. First operand 93081 states and 113192 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 22:26:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:27,466 INFO L93 Difference]: Finished difference Result 203133 states and 248211 transitions. [2023-04-01 22:26:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:27,466 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 420 [2023-04-01 22:26:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:27,923 INFO L225 Difference]: With dead ends: 203133 [2023-04-01 22:26:27,923 INFO L226 Difference]: Without dead ends: 110062 [2023-04-01 22:26:27,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:27,996 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 847 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:27,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1182 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:26:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110062 states. [2023-04-01 22:26:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110062 to 106961. [2023-04-01 22:26:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106961 states, 104332 states have (on average 1.0767837288655446) internal successors, (112343), 104920 states have internal predecessors, (112343), 642 states have call successors, (642), 538 states have call predecessors, (642), 1986 states have return successors, (15885), 1502 states have call predecessors, (15885), 641 states have call successors, (15885) [2023-04-01 22:26:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106961 states to 106961 states and 128870 transitions. [2023-04-01 22:26:30,279 INFO L78 Accepts]: Start accepts. Automaton has 106961 states and 128870 transitions. Word has length 420 [2023-04-01 22:26:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:30,280 INFO L495 AbstractCegarLoop]: Abstraction has 106961 states and 128870 transitions. [2023-04-01 22:26:30,280 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 22:26:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 106961 states and 128870 transitions. [2023-04-01 22:26:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2023-04-01 22:26:30,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:30,479 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:30,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:30,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:30,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:30,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1881493321, now seen corresponding path program 1 times [2023-04-01 22:26:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877545314] [2023-04-01 22:26:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-04-01 22:26:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-04-01 22:26:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 583 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-04-01 22:26:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877545314] [2023-04-01 22:26:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877545314] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92509262] [2023-04-01 22:26:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:36,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:36,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:26:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:37,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:26:37,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 629 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:26:37,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 629 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:26:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92509262] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:40,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 6] total 16 [2023-04-01 22:26:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509284828] [2023-04-01 22:26:40,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:26:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:26:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:26:40,309 INFO L87 Difference]: Start difference. First operand 106961 states and 128870 transitions. Second operand has 16 states, 16 states have (on average 144.8125) internal successors, (2317), 14 states have internal predecessors, (2317), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:26:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:59,909 INFO L93 Difference]: Finished difference Result 313244 states and 389778 transitions. [2023-04-01 22:26:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-01 22:26:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 144.8125) internal successors, (2317), 14 states have internal predecessors, (2317), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 1206 [2023-04-01 22:26:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:00,709 INFO L225 Difference]: With dead ends: 313244 [2023-04-01 22:27:00,710 INFO L226 Difference]: Without dead ends: 204705 [2023-04-01 22:27:00,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2532 GetRequests, 2462 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=846, Invalid=3710, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 22:27:00,832 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 9197 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 19995 mSolverCounterSat, 5107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9202 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 25102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5107 IncrementalHoareTripleChecker+Valid, 19995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:00,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9202 Valid, 560 Invalid, 25102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5107 Valid, 19995 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-04-01 22:27:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204705 states. [2023-04-01 22:27:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204705 to 194939. [2023-04-01 22:27:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194939 states, 190618 states have (on average 1.0710321165891994) internal successors, (204158), 191592 states have internal predecessors, (204158), 1162 states have call successors, (1162), 986 states have call predecessors, (1162), 3158 states have return successors, (31961), 2360 states have call predecessors, (31961), 1161 states have call successors, (31961) [2023-04-01 22:27:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194939 states to 194939 states and 237281 transitions. [2023-04-01 22:27:04,750 INFO L78 Accepts]: Start accepts. Automaton has 194939 states and 237281 transitions. Word has length 1206 [2023-04-01 22:27:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:04,753 INFO L495 AbstractCegarLoop]: Abstraction has 194939 states and 237281 transitions. [2023-04-01 22:27:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 144.8125) internal successors, (2317), 14 states have internal predecessors, (2317), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:27:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 194939 states and 237281 transitions. [2023-04-01 22:27:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2023-04-01 22:27:05,178 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:05,179 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:05,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:27:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 22:27:05,386 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:05,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash -135067044, now seen corresponding path program 1 times [2023-04-01 22:27:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:05,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263929487] [2023-04-01 22:27:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:27:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:27:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-04-01 22:27:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:27:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:27:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 502 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:27:08,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263929487] [2023-04-01 22:27:08,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263929487] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425244202] [2023-04-01 22:27:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:08,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:08,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:08,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:08,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:27:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:08,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:27:08,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:27:09,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:27:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425244202] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:10,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:27:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186400263] [2023-04-01 22:27:10,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:27:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:27:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:27:10,929 INFO L87 Difference]: Start difference. First operand 194939 states and 237281 transitions. Second operand has 10 states, 10 states have (on average 224.0) internal successors, (2240), 8 states have internal predecessors, (2240), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 22:27:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:24,134 INFO L93 Difference]: Finished difference Result 480594 states and 593369 transitions. [2023-04-01 22:27:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 22:27:24,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 224.0) internal successors, (2240), 8 states have internal predecessors, (2240), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 1081 [2023-04-01 22:27:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:25,348 INFO L225 Difference]: With dead ends: 480594 [2023-04-01 22:27:25,348 INFO L226 Difference]: Without dead ends: 286428 [2023-04-01 22:27:25,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2206 GetRequests, 2181 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:27:25,648 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3610 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 14373 mSolverCounterSat, 2022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3611 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 16395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2022 IncrementalHoareTripleChecker+Valid, 14373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3611 Valid, 284 Invalid, 16395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2022 Valid, 14373 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-01 22:27:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286428 states. [2023-04-01 22:27:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286428 to 264725. [2023-04-01 22:27:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264725 states, 259419 states have (on average 1.0588969967504307) internal successors, (274698), 260498 states have internal predecessors, (274698), 1588 states have call successors, (1588), 1346 states have call predecessors, (1588), 3717 states have return successors, (38105), 2880 states have call predecessors, (38105), 1587 states have call successors, (38105) [2023-04-01 22:27:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264725 states to 264725 states and 314391 transitions. [2023-04-01 22:27:31,880 INFO L78 Accepts]: Start accepts. Automaton has 264725 states and 314391 transitions. Word has length 1081 [2023-04-01 22:27:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:31,881 INFO L495 AbstractCegarLoop]: Abstraction has 264725 states and 314391 transitions. [2023-04-01 22:27:31,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 224.0) internal successors, (2240), 8 states have internal predecessors, (2240), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 22:27:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 264725 states and 314391 transitions. [2023-04-01 22:27:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1525 [2023-04-01 22:27:32,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:32,170 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:32,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:32,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:32,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:32,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash -904904221, now seen corresponding path program 1 times [2023-04-01 22:27:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:32,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369093297] [2023-04-01 22:27:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:27:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:27:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2023-04-01 22:27:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-04-01 22:27:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:27:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 795 [2023-04-01 22:27:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:27:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:27:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 254 proven. 847 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2023-04-01 22:27:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369093297] [2023-04-01 22:27:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369093297] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747292852] [2023-04-01 22:27:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:35,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:35,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:35,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:27:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:35,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 22:27:35,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 927 proven. 39 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2023-04-01 22:27:36,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 254 proven. 856 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2023-04-01 22:27:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747292852] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:38,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 22:27:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381730227] [2023-04-01 22:27:38,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:38,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 22:27:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 22:27:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:27:38,653 INFO L87 Difference]: Start difference. First operand 264725 states and 314391 transitions. Second operand has 24 states, 24 states have (on average 80.125) internal successors, (1923), 22 states have internal predecessors, (1923), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 22:27:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:57,366 INFO L93 Difference]: Finished difference Result 567946 states and 678592 transitions. [2023-04-01 22:27:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-01 22:27:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 80.125) internal successors, (1923), 22 states have internal predecessors, (1923), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 1524 [2023-04-01 22:27:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:58,503 INFO L225 Difference]: With dead ends: 567946 [2023-04-01 22:27:58,504 INFO L226 Difference]: Without dead ends: 300813 [2023-04-01 22:27:58,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3195 GetRequests, 3111 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1402, Invalid=5738, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 22:27:58,730 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 14035 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 16894 mSolverCounterSat, 3654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14042 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 20548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3654 IncrementalHoareTripleChecker+Valid, 16894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:58,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14042 Valid, 760 Invalid, 20548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3654 Valid, 16894 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 22:27:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300813 states. [2023-04-01 22:28:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300813 to 286958. [2023-04-01 22:28:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286958 states, 281434 states have (on average 1.0473468024474655) internal successors, (294759), 282505 states have internal predecessors, (294759), 1728 states have call successors, (1728), 1462 states have call predecessors, (1728), 3795 states have return successors, (35575), 2990 states have call predecessors, (35575), 1727 states have call successors, (35575) [2023-04-01 22:28:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286958 states to 286958 states and 332062 transitions. [2023-04-01 22:28:04,463 INFO L78 Accepts]: Start accepts. Automaton has 286958 states and 332062 transitions. Word has length 1524 [2023-04-01 22:28:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:04,464 INFO L495 AbstractCegarLoop]: Abstraction has 286958 states and 332062 transitions. [2023-04-01 22:28:04,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 80.125) internal successors, (1923), 22 states have internal predecessors, (1923), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 22:28:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 286958 states and 332062 transitions. [2023-04-01 22:28:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2023-04-01 22:28:04,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:04,750 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:04,756 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 22:28:04,950 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,SelfDestructingSolverStorable12 [2023-04-01 22:28:04,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:04,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2124248612, now seen corresponding path program 1 times [2023-04-01 22:28:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:04,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42167185] [2023-04-01 22:28:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:28:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-04-01 22:28:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 22:28:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 22:28:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:28:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 1028 proven. 46 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2023-04-01 22:28:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42167185] [2023-04-01 22:28:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42167185] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138131174] [2023-04-01 22:28:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:08,547 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 22:28:08,553 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 22:28:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 22:28:09,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 1693 proven. 10 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-04-01 22:28:09,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 484 proven. 146 refuted. 0 times theorem prover too weak. 1578 trivial. 0 not checked. [2023-04-01 22:28:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138131174] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:11,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 16 [2023-04-01 22:28:11,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751294744] [2023-04-01 22:28:11,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:11,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:28:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:28:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:28:11,585 INFO L87 Difference]: Start difference. First operand 286958 states and 332062 transitions. Second operand has 16 states, 16 states have (on average 152.5) internal successors, (2440), 14 states have internal predecessors, (2440), 8 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18)