/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/Problem17_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:36:10,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:36:10,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:36:10,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:36:10,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:36:10,192 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:36:10,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:36:10,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:36:10,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:36:10,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:36:10,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:36:10,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:36:10,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:36:10,195 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:36:10,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:36:10,196 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:36:10,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:36:10,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:36:10,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:36:10,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:36:10,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:36:10,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:36:10,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:36:10,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:36:10,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:36:10,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:36:10,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:36:10,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:36:10,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:36:10,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:36:10,200 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:36:10,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:36:10,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:36:10,200 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:36:10,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:36:10,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:36:10,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:36:10,433 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:36:10,433 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:36:10,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label59.c [2023-04-01 23:36:11,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:36:11,950 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:36:11,951 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label59.c [2023-04-01 23:36:11,972 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4c5f72b/1ad97f1f912942c1906ed71e87e6a284/FLAGe2d28f793 [2023-04-01 23:36:11,987 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4c5f72b/1ad97f1f912942c1906ed71e87e6a284 [2023-04-01 23:36:11,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:36:11,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:36:11,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:36:11,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:36:11,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:36:11,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:36:11" (1/1) ... [2023-04-01 23:36:11,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f69e914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:11, skipping insertion in model container [2023-04-01 23:36:11,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:36:11" (1/1) ... [2023-04-01 23:36:12,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:36:12,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:36:12,290 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/Problem17_label59.c[4894,4907] [2023-04-01 23:36:12,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:36:12,853 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:36:12,884 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/Problem17_label59.c[4894,4907] [2023-04-01 23:36:13,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:36:13,122 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:36:13,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13 WrapperNode [2023-04-01 23:36:13,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:36:13,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:36:13,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:36:13,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:36:13,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:36:13,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:36:13,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:36:13,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:36:13,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (1/1) ... [2023-04-01 23:36:13,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:36:13,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:13,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:36:13,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:36:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:36:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:36:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:36:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:36:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:36:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:36:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:36:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:36:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:36:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:36:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:36:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:36:13,527 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:36:13,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:36:16,651 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:36:16,665 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:36:16,665 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:36:16,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:36:16 BoogieIcfgContainer [2023-04-01 23:36:16,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:36:16,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:36:16,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:36:16,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:36:16,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:36:11" (1/3) ... [2023-04-01 23:36:16,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ec4617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:36:16, skipping insertion in model container [2023-04-01 23:36:16,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:13" (2/3) ... [2023-04-01 23:36:16,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ec4617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:36:16, skipping insertion in model container [2023-04-01 23:36:16,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:36:16" (3/3) ... [2023-04-01 23:36:16,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2023-04-01 23:36:16,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:36:16,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:36:16,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:36:16,748 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;@2401d903, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:36:16,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:36:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:36:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 23:36:16,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:16,762 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] [2023-04-01 23:36:16,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:16,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -653647962, now seen corresponding path program 1 times [2023-04-01 23:36:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322329230] [2023-04-01 23:36:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:16,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:17,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322329230] [2023-04-01 23:36:17,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322329230] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:17,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:17,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:36:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855795588] [2023-04-01 23:36:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:17,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:36:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:17,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:36:17,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:36:17,369 INFO L87 Difference]: Start difference. First operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:36:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:21,323 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2023-04-01 23:36:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:36:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 38 [2023-04-01 23:36:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:21,343 INFO L225 Difference]: With dead ends: 1729 [2023-04-01 23:36:21,343 INFO L226 Difference]: Without dead ends: 1047 [2023-04-01 23:36:21,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:21,353 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1616 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:21,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 137 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:36:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-04-01 23:36:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2023-04-01 23:36:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1012 states have (on average 1.7233201581027668) internal successors, (1744), 1014 states have internal predecessors, (1744), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 23:36:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2023-04-01 23:36:21,456 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 38 [2023-04-01 23:36:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2023-04-01 23:36:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:36:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2023-04-01 23:36:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-01 23:36:21,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:21,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:36:21,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:21,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash -337997850, now seen corresponding path program 1 times [2023-04-01 23:36:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:21,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872566263] [2023-04-01 23:36:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:21,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872566263] [2023-04-01 23:36:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872566263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:36:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248251624] [2023-04-01 23:36:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:21,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:36:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:36:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:36:21,968 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:25,785 INFO L93 Difference]: Finished difference Result 3035 states and 5276 transitions. [2023-04-01 23:36:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:36:25,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 107 [2023-04-01 23:36:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:25,795 INFO L225 Difference]: With dead ends: 3035 [2023-04-01 23:36:25,796 INFO L226 Difference]: Without dead ends: 2013 [2023-04-01 23:36:25,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:36:25,800 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3331 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:25,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 322 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:36:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-04-01 23:36:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1961. [2023-04-01 23:36:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1921 states have (on average 1.5039042165538783) internal successors, (2889), 1931 states have internal predecessors, (2889), 10 states have call successors, (10), 10 states have call predecessors, (10), 29 states have return successors, (64), 19 states have call predecessors, (64), 9 states have call successors, (64) [2023-04-01 23:36:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2963 transitions. [2023-04-01 23:36:25,869 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2963 transitions. Word has length 107 [2023-04-01 23:36:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:25,869 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 2963 transitions. [2023-04-01 23:36:25,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2963 transitions. [2023-04-01 23:36:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 23:36:25,872 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:25,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:36:25,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:25,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1215676386, now seen corresponding path program 1 times [2023-04-01 23:36:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:25,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877929668] [2023-04-01 23:36:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877929668] [2023-04-01 23:36:26,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877929668] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:36:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719479374] [2023-04-01 23:36:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:36:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:36:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:36:26,176 INFO L87 Difference]: Start difference. First operand 1961 states and 2963 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:29,871 INFO L93 Difference]: Finished difference Result 5847 states and 8975 transitions. [2023-04-01 23:36:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:36:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 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 109 [2023-04-01 23:36:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:29,889 INFO L225 Difference]: With dead ends: 5847 [2023-04-01 23:36:29,889 INFO L226 Difference]: Without dead ends: 3892 [2023-04-01 23:36:29,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:36:29,895 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 2524 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:29,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 331 Invalid, 3756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 23:36:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-04-01 23:36:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2891. [2023-04-01 23:36:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2818 states have (on average 1.3474095102909864) internal successors, (3797), 2845 states have internal predecessors, (3797), 14 states have call successors, (14), 14 states have call predecessors, (14), 58 states have return successors, (145), 31 states have call predecessors, (145), 13 states have call successors, (145) [2023-04-01 23:36:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3956 transitions. [2023-04-01 23:36:29,993 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3956 transitions. Word has length 109 [2023-04-01 23:36:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:29,994 INFO L495 AbstractCegarLoop]: Abstraction has 2891 states and 3956 transitions. [2023-04-01 23:36:29,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3956 transitions. [2023-04-01 23:36:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 23:36:29,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:30,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:30,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:36:30,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:30,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash -501328046, now seen corresponding path program 1 times [2023-04-01 23:36:30,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:30,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912114954] [2023-04-01 23:36:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912114954] [2023-04-01 23:36:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912114954] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846700143] [2023-04-01 23:36:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:30,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:30,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:30,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:36:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:36:30,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:30,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846700143] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:36:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 10 [2023-04-01 23:36:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229156590] [2023-04-01 23:36:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:36:30,848 INFO L87 Difference]: Start difference. First operand 2891 states and 3956 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:33,198 INFO L93 Difference]: Finished difference Result 7567 states and 10588 transitions. [2023-04-01 23:36:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:33,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 112 [2023-04-01 23:36:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:33,221 INFO L225 Difference]: With dead ends: 7567 [2023-04-01 23:36:33,222 INFO L226 Difference]: Without dead ends: 3753 [2023-04-01 23:36:33,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:36:33,238 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 569 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:33,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 668 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:36:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2023-04-01 23:36:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3732. [2023-04-01 23:36:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3647 states have (on average 1.253907321085824) internal successors, (4573), 3675 states have internal predecessors, (4573), 18 states have call successors, (18), 18 states have call predecessors, (18), 66 states have return successors, (237), 38 states have call predecessors, (237), 17 states have call successors, (237) [2023-04-01 23:36:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 4828 transitions. [2023-04-01 23:36:33,335 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 4828 transitions. Word has length 112 [2023-04-01 23:36:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:33,336 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 4828 transitions. [2023-04-01 23:36:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 4828 transitions. [2023-04-01 23:36:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-04-01 23:36:33,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:33,342 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:36:33,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:36:33,548 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 23:36:33,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:33,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1755548962, now seen corresponding path program 1 times [2023-04-01 23:36:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:33,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476237954] [2023-04-01 23:36:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:33,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 23:36:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476237954] [2023-04-01 23:36:33,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476237954] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:33,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:33,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:36:33,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762906787] [2023-04-01 23:36:33,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:33,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 23:36:33,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 23:36:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:33,857 INFO L87 Difference]: Start difference. First operand 3732 states and 4828 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 23:36:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:37,109 INFO L93 Difference]: Finished difference Result 10112 states and 13658 transitions. [2023-04-01 23:36:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:36:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 207 [2023-04-01 23:36:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:37,144 INFO L225 Difference]: With dead ends: 10112 [2023-04-01 23:36:37,144 INFO L226 Difference]: Without dead ends: 6385 [2023-04-01 23:36:37,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:36:37,156 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 2033 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:37,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 248 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 23:36:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2023-04-01 23:36:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6381. [2023-04-01 23:36:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6251 states have (on average 1.1476563749800033) internal successors, (7174), 6290 states have internal predecessors, (7174), 30 states have call successors, (30), 30 states have call predecessors, (30), 99 states have return successors, (420), 60 states have call predecessors, (420), 29 states have call successors, (420) [2023-04-01 23:36:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 7624 transitions. [2023-04-01 23:36:37,337 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 7624 transitions. Word has length 207 [2023-04-01 23:36:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:37,339 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 7624 transitions. [2023-04-01 23:36:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 23:36:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 7624 transitions. [2023-04-01 23:36:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-04-01 23:36:37,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:37,344 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:36:37,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:37,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash -187753579, now seen corresponding path program 1 times [2023-04-01 23:36:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474494084] [2023-04-01 23:36:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:36:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-04-01 23:36:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474494084] [2023-04-01 23:36:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474494084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473463919] [2023-04-01 23:36:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:37,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:37,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:37,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:37,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:36:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:37,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-04-01 23:36:37,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473463919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:36:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72505510] [2023-04-01 23:36:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:37,952 INFO L87 Difference]: Start difference. First operand 6381 states and 7624 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:39,547 INFO L93 Difference]: Finished difference Result 18466 states and 22366 transitions. [2023-04-01 23:36:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 305 [2023-04-01 23:36:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:39,591 INFO L225 Difference]: With dead ends: 18466 [2023-04-01 23:36:39,591 INFO L226 Difference]: Without dead ends: 11211 [2023-04-01 23:36:39,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:39,608 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 415 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:39,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 821 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:36:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11211 states. [2023-04-01 23:36:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11211 to 11211. [2023-04-01 23:36:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 11010 states have (on average 1.1008174386920981) internal successors, (12120), 11063 states have internal predecessors, (12120), 52 states have call successors, (52), 52 states have call predecessors, (52), 148 states have return successors, (752), 95 states have call predecessors, (752), 51 states have call successors, (752) [2023-04-01 23:36:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 12924 transitions. [2023-04-01 23:36:39,876 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 12924 transitions. Word has length 305 [2023-04-01 23:36:39,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:39,877 INFO L495 AbstractCegarLoop]: Abstraction has 11211 states and 12924 transitions. [2023-04-01 23:36:39,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 12924 transitions. [2023-04-01 23:36:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-04-01 23:36:39,886 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:39,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:39,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:36:40,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:40,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1542458335, now seen corresponding path program 1 times [2023-04-01 23:36:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:40,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241529353] [2023-04-01 23:36:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:40,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:36:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241529353] [2023-04-01 23:36:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241529353] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249795148] [2023-04-01 23:36:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:41,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:41,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:41,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:36:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:36:41,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:42,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249795148] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:43,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:36:43,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2023-04-01 23:36:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674596151] [2023-04-01 23:36:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 23:36:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 23:36:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:36:43,523 INFO L87 Difference]: Start difference. First operand 11211 states and 12924 transitions. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:36:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:46,184 INFO L93 Difference]: Finished difference Result 31281 states and 36969 transitions. [2023-04-01 23:36:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 23:36:46,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 385 [2023-04-01 23:36:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:46,243 INFO L225 Difference]: With dead ends: 31281 [2023-04-01 23:36:46,243 INFO L226 Difference]: Without dead ends: 19172 [2023-04-01 23:36:46,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 767 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:36:46,265 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1231 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:46,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 202 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:36:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19172 states. [2023-04-01 23:36:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19172 to 19159. [2023-04-01 23:36:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19159 states, 18829 states have (on average 1.1104678952679377) internal successors, (20909), 18921 states have internal predecessors, (20909), 88 states have call successors, (88), 88 states have call predecessors, (88), 241 states have return successors, (1683), 149 states have call predecessors, (1683), 87 states have call successors, (1683) [2023-04-01 23:36:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19159 states to 19159 states and 22680 transitions. [2023-04-01 23:36:46,628 INFO L78 Accepts]: Start accepts. Automaton has 19159 states and 22680 transitions. Word has length 385 [2023-04-01 23:36:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:46,629 INFO L495 AbstractCegarLoop]: Abstraction has 19159 states and 22680 transitions. [2023-04-01 23:36:46,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 5 states have internal predecessors, (377), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:36:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19159 states and 22680 transitions. [2023-04-01 23:36:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-04-01 23:36:46,655 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:46,656 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:36:46,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:46,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:46,863 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:46,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1935986249, now seen corresponding path program 1 times [2023-04-01 23:36:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:46,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549740273] [2023-04-01 23:36:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-01 23:36:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-04-01 23:36:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-04-01 23:36:47,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549740273] [2023-04-01 23:36:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549740273] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415943843] [2023-04-01 23:36:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:47,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:47,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:47,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:47,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:36:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:47,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 23:36:47,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-04-01 23:36:47,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415943843] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:47,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:47,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:36:47,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41875170] [2023-04-01 23:36:47,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:47,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:47,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:47,640 INFO L87 Difference]: Start difference. First operand 19159 states and 22680 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:36:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:49,703 INFO L93 Difference]: Finished difference Result 48799 states and 58614 transitions. [2023-04-01 23:36:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:49,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 570 [2023-04-01 23:36:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:49,788 INFO L225 Difference]: With dead ends: 48799 [2023-04-01 23:36:49,788 INFO L226 Difference]: Without dead ends: 29646 [2023-04-01 23:36:49,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:49,820 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 497 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:49,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 215 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:36:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29646 states. [2023-04-01 23:36:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29646 to 29625. [2023-04-01 23:36:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29625 states, 29169 states have (on average 1.1038431211217388) internal successors, (32198), 29280 states have internal predecessors, (32198), 136 states have call successors, (136), 136 states have call predecessors, (136), 319 states have return successors, (2825), 208 states have call predecessors, (2825), 135 states have call successors, (2825) [2023-04-01 23:36:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29625 states to 29625 states and 35159 transitions. [2023-04-01 23:36:50,342 INFO L78 Accepts]: Start accepts. Automaton has 29625 states and 35159 transitions. Word has length 570 [2023-04-01 23:36:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:50,342 INFO L495 AbstractCegarLoop]: Abstraction has 29625 states and 35159 transitions. [2023-04-01 23:36:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:36:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 29625 states and 35159 transitions. [2023-04-01 23:36:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-04-01 23:36:50,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:50,459 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 23:36:50,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 23:36:50,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:50,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:50,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 96917729, now seen corresponding path program 1 times [2023-04-01 23:36:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:50,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677532698] [2023-04-01 23:36:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-01 23:36:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:36:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-04-01 23:36:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 142 proven. 252 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-04-01 23:36:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677532698] [2023-04-01 23:36:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677532698] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927440285] [2023-04-01 23:36:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:52,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:52,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:52,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:36:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 23:36:52,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 457 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-04-01 23:36:53,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 457 proven. 94 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-01 23:36:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927440285] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:36:54,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:36:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 21 [2023-04-01 23:36:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137465885] [2023-04-01 23:36:54,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:36:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 23:36:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 23:36:54,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:36:54,606 INFO L87 Difference]: Start difference. First operand 29625 states and 35159 transitions. Second operand has 21 states, 21 states have (on average 55.904761904761905) internal successors, (1174), 19 states have internal predecessors, (1174), 12 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-04-01 23:37:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:04,210 INFO L93 Difference]: Finished difference Result 87061 states and 105137 transitions. [2023-04-01 23:37:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-01 23:37:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 55.904761904761905) internal successors, (1174), 19 states have internal predecessors, (1174), 12 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) Word has length 612 [2023-04-01 23:37:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:04,398 INFO L225 Difference]: With dead ends: 87061 [2023-04-01 23:37:04,398 INFO L226 Difference]: Without dead ends: 57875 [2023-04-01 23:37:04,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1317 GetRequests, 1258 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=821, Invalid=2719, Unknown=0, NotChecked=0, Total=3540 [2023-04-01 23:37:04,443 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 7889 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 10785 mSolverCounterSat, 2178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7889 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 12963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2178 IncrementalHoareTripleChecker+Valid, 10785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:04,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7889 Valid, 580 Invalid, 12963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2178 Valid, 10785 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 23:37:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57875 states. [2023-04-01 23:37:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57875 to 45217. [2023-04-01 23:37:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45217 states, 44437 states have (on average 1.0867520309651866) internal successors, (48292), 44675 states have internal predecessors, (48292), 206 states have call successors, (206), 206 states have call predecessors, (206), 573 states have return successors, (4628), 335 states have call predecessors, (4628), 205 states have call successors, (4628) [2023-04-01 23:37:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45217 states to 45217 states and 53126 transitions. [2023-04-01 23:37:05,382 INFO L78 Accepts]: Start accepts. Automaton has 45217 states and 53126 transitions. Word has length 612 [2023-04-01 23:37:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:05,382 INFO L495 AbstractCegarLoop]: Abstraction has 45217 states and 53126 transitions. [2023-04-01 23:37:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 55.904761904761905) internal successors, (1174), 19 states have internal predecessors, (1174), 12 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-04-01 23:37:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 45217 states and 53126 transitions. [2023-04-01 23:37:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-04-01 23:37:05,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:05,452 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-04-01 23:37:05,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:05,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:05,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:05,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1367855690, now seen corresponding path program 1 times [2023-04-01 23:37:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995635586] [2023-04-01 23:37:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:37:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-04-01 23:37:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-04-01 23:37:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 135 proven. 4 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2023-04-01 23:37:06,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995635586] [2023-04-01 23:37:06,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995635586] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563855909] [2023-04-01 23:37:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:06,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:37:06,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:37:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:06,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 23:37:06,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-04-01 23:37:06,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563855909] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:06,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:37:06,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489626700] [2023-04-01 23:37:06,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:37:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:37:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:37:06,708 INFO L87 Difference]: Start difference. First operand 45217 states and 53126 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:37:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:08,432 INFO L93 Difference]: Finished difference Result 100876 states and 119520 transitions. [2023-04-01 23:37:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:37:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 747 [2023-04-01 23:37:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:08,585 INFO L225 Difference]: With dead ends: 100876 [2023-04-01 23:37:08,585 INFO L226 Difference]: Without dead ends: 56100 [2023-04-01 23:37:08,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:37:08,628 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 489 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:08,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 687 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:37:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56100 states. [2023-04-01 23:37:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56100 to 54791. [2023-04-01 23:37:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54791 states, 53901 states have (on average 1.08228047717111) internal successors, (58336), 54159 states have internal predecessors, (58336), 250 states have call successors, (250), 250 states have call predecessors, (250), 639 states have return successors, (5582), 381 states have call predecessors, (5582), 249 states have call successors, (5582) [2023-04-01 23:37:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54791 states to 54791 states and 64168 transitions. [2023-04-01 23:37:09,577 INFO L78 Accepts]: Start accepts. Automaton has 54791 states and 64168 transitions. Word has length 747 [2023-04-01 23:37:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:09,578 INFO L495 AbstractCegarLoop]: Abstraction has 54791 states and 64168 transitions. [2023-04-01 23:37:09,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 23:37:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 54791 states and 64168 transitions. [2023-04-01 23:37:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2023-04-01 23:37:09,680 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:09,680 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:09,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:09,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:09,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1551182148, now seen corresponding path program 1 times [2023-04-01 23:37:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995499567] [2023-04-01 23:37:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:37:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:37:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 23:37:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:11,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2023-04-01 23:37:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 639 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-04-01 23:37:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995499567] [2023-04-01 23:37:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995499567] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068436080] [2023-04-01 23:37:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:11,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:11,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:37:11,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:37:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:11,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:37:11,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 702 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-04-01 23:37:12,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068436080] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:14,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:37:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-04-01 23:37:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175406951] [2023-04-01 23:37:14,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:37:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:37:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:37:14,274 INFO L87 Difference]: Start difference. First operand 54791 states and 64168 transitions. Second operand has 13 states, 13 states have (on average 80.38461538461539) internal successors, (1045), 11 states have internal predecessors, (1045), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:37:19,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:21,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:24,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:28,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:30,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:33,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:37,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:39,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:41,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:43,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:45,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:47,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:50,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:52,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:54,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:57,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:59,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:04,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:07,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:09,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:11,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:13,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:16,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:18,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:20,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:23,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:25,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:31,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:33,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:35,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:38,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:41,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:43,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:46,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:50,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:52,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:54,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:58,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:00,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:02,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:05,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:05,699 INFO L93 Difference]: Finished difference Result 144123 states and 170768 transitions. [2023-04-01 23:39:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-04-01 23:39:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 80.38461538461539) internal successors, (1045), 11 states have internal predecessors, (1045), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 843 [2023-04-01 23:39:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:05,975 INFO L225 Difference]: With dead ends: 144123 [2023-04-01 23:39:05,975 INFO L226 Difference]: Without dead ends: 89773 [2023-04-01 23:39:06,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1742 GetRequests, 1658 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1104, Invalid=6033, Unknown=3, NotChecked=0, Total=7140 [2023-04-01 23:39:06,036 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 3545 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 12091 mSolverCounterSat, 990 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 13120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 12091 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:06,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 886 Invalid, 13120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [990 Valid, 12091 Invalid, 39 Unknown, 0 Unchecked, 102.4s Time] [2023-04-01 23:39:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89773 states. [2023-04-01 23:39:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89773 to 82006. [2023-04-01 23:39:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82006 states, 80720 states have (on average 1.0759910802775026) internal successors, (86854), 81089 states have internal predecessors, (86854), 374 states have call successors, (374), 374 states have call predecessors, (374), 911 states have return successors, (8469), 542 states have call predecessors, (8469), 373 states have call successors, (8469) [2023-04-01 23:39:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82006 states to 82006 states and 95697 transitions. [2023-04-01 23:39:07,732 INFO L78 Accepts]: Start accepts. Automaton has 82006 states and 95697 transitions. Word has length 843 [2023-04-01 23:39:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:07,733 INFO L495 AbstractCegarLoop]: Abstraction has 82006 states and 95697 transitions. [2023-04-01 23:39:07,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.38461538461539) internal successors, (1045), 11 states have internal predecessors, (1045), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:39:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 82006 states and 95697 transitions. [2023-04-01 23:39:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2023-04-01 23:39:08,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:08,144 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:39:08,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:08,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:08,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash 704064727, now seen corresponding path program 1 times [2023-04-01 23:39:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:08,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621062312] [2023-04-01 23:39:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:39:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:39:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 23:39:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2023-04-01 23:39:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-04-01 23:39:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 811 proven. 2 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2023-04-01 23:39:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:09,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621062312] [2023-04-01 23:39:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621062312] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:09,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963756295] [2023-04-01 23:39:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:09,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:09,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:09,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:09,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:39:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:09,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:09,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 816 proven. 2 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2023-04-01 23:39:10,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 816 proven. 2 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2023-04-01 23:39:10,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963756295] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:10,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:39:10,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176476675] [2023-04-01 23:39:10,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:10,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:39:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:39:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:10,858 INFO L87 Difference]: Start difference. First operand 82006 states and 95697 transitions. Second operand has 11 states, 11 states have (on average 87.72727272727273) internal successors, (965), 9 states have internal predecessors, (965), 5 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:39:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:17,040 INFO L93 Difference]: Finished difference Result 162280 states and 189820 transitions. [2023-04-01 23:39:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:39:17,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 87.72727272727273) internal successors, (965), 9 states have internal predecessors, (965), 5 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 982 [2023-04-01 23:39:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:17,459 INFO L225 Difference]: With dead ends: 162280 [2023-04-01 23:39:17,459 INFO L226 Difference]: Without dead ends: 80715 [2023-04-01 23:39:17,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 1986 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-04-01 23:39:17,572 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2273 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 6306 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 6668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 6306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:17,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2273 Valid, 335 Invalid, 6668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 6306 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 23:39:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80715 states. [2023-04-01 23:39:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80715 to 74594. [2023-04-01 23:39:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74594 states, 73386 states have (on average 1.0745101245469164) internal successors, (78854), 73742 states have internal predecessors, (78854), 340 states have call successors, (340), 340 states have call predecessors, (340), 867 states have return successors, (7591), 511 states have call predecessors, (7591), 339 states have call successors, (7591) [2023-04-01 23:39:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74594 states to 74594 states and 86785 transitions. [2023-04-01 23:39:19,635 INFO L78 Accepts]: Start accepts. Automaton has 74594 states and 86785 transitions. Word has length 982 [2023-04-01 23:39:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:19,636 INFO L495 AbstractCegarLoop]: Abstraction has 74594 states and 86785 transitions. [2023-04-01 23:39:19,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.72727272727273) internal successors, (965), 9 states have internal predecessors, (965), 5 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:39:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 74594 states and 86785 transitions. [2023-04-01 23:39:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2023-04-01 23:39:19,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:19,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:19,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:19,968 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,SelfDestructingSolverStorable11 [2023-04-01 23:39:19,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:19,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1316653596, now seen corresponding path program 1 times [2023-04-01 23:39:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464555697] [2023-04-01 23:39:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:39:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:39:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2023-04-01 23:39:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2023-04-01 23:39:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 716 proven. 2 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2023-04-01 23:39:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464555697] [2023-04-01 23:39:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464555697] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416389062] [2023-04-01 23:39:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:21,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:21,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:21,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:39:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:21,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:21,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 720 proven. 2 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-04-01 23:39:22,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 720 proven. 2 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-04-01 23:39:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416389062] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:22,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:22,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-04-01 23:39:22,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278378234] [2023-04-01 23:39:22,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:22,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:39:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:39:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:22,972 INFO L87 Difference]: Start difference. First operand 74594 states and 86785 transitions. Second operand has 11 states, 11 states have (on average 92.9090909090909) internal successors, (1022), 9 states have internal predecessors, (1022), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:39:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:27,957 INFO L93 Difference]: Finished difference Result 159492 states and 185581 transitions. [2023-04-01 23:39:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 23:39:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 92.9090909090909) internal successors, (1022), 9 states have internal predecessors, (1022), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 1201 [2023-04-01 23:39:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:27,959 INFO L225 Difference]: With dead ends: 159492 [2023-04-01 23:39:27,959 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 23:39:28,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2441 GetRequests, 2422 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:39:28,061 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 2314 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 5044 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 5044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:28,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 272 Invalid, 5431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 5044 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 23:39:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 23:39:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 23:39:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 23:39:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 23:39:28,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1201 [2023-04-01 23:39:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 23:39:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 92.9090909090909) internal successors, (1022), 9 states have internal predecessors, (1022), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:39:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 23:39:28,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 23:39:28,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:39:28,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:39:28,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:39:28,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 23:39:39,417 WARN L223 SmtUtils]: Spent 11.14s on a formula simplification. DAG size of input: 735 DAG size of output: 669 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-01 23:39:49,203 WARN L223 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 735 DAG size of output: 669 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)