/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/Problem03_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:29:08,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:29:08,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:29:08,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:29:08,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:29:08,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:29:08,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:29:08,954 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 20:29:08,986 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:29:08,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:29:08,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:29:08,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:29:08,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:29:08,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:29:08,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:29:08,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:29:08,990 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:29:08,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:29:08,991 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:29:08,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:29:08,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:29:08,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:29:08,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:29:08,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:29:08,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:29:08,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:29:08,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:29:08,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:29:08,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:29:08,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:29:08,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:29:08,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:29:08,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:29:08,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:29:08,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:29:08,995 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:29:08,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:29:08,995 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:29:08,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:29:09,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:29:09,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:29:09,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:29:09,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:29:09,256 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:29:09,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label36.c [2023-04-01 20:29:10,388 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:29:10,702 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:29:10,702 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label36.c [2023-04-01 20:29:10,714 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3194b42/e87362f3f0f84b4f9dd90155c580660c/FLAG42d119f36 [2023-04-01 20:29:10,727 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3194b42/e87362f3f0f84b4f9dd90155c580660c [2023-04-01 20:29:10,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:29:10,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:29:10,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:29:10,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:29:10,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:29:10,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:29:10" (1/1) ... [2023-04-01 20:29:10,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8dfbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:10, skipping insertion in model container [2023-04-01 20:29:10,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:29:10" (1/1) ... [2023-04-01 20:29:10,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:29:10,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:29:11,231 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/Problem03_label36.c[58393,58406] [2023-04-01 20:29:11,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:29:11,278 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:29:11,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label36.c[58393,58406] [2023-04-01 20:29:11,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:29:11,495 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:29:11,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11 WrapperNode [2023-04-01 20:29:11,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:29:11,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:29:11,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:29:11,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:29:11,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:29:11,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:29:11,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:29:11,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:29:11,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (1/1) ... [2023-04-01 20:29:11,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:29:11,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:11,669 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 20:29:11,696 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 20:29:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:29:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:29:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:29:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:29:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:29:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:29:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:29:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:29:11,836 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:29:11,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:29:13,356 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:29:13,371 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:29:13,371 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:29:13,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:29:13 BoogieIcfgContainer [2023-04-01 20:29:13,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:29:13,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:29:13,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:29:13,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:29:13,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:29:10" (1/3) ... [2023-04-01 20:29:13,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d51a500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:29:13, skipping insertion in model container [2023-04-01 20:29:13,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:29:11" (2/3) ... [2023-04-01 20:29:13,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d51a500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:29:13, skipping insertion in model container [2023-04-01 20:29:13,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:29:13" (3/3) ... [2023-04-01 20:29:13,383 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label36.c [2023-04-01 20:29:13,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:29:13,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:29:13,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:29:13,473 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;@53c58ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:29:13,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:29:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:29:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-04-01 20:29:13,509 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:13,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:13,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:13,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1587271601, now seen corresponding path program 1 times [2023-04-01 20:29:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:13,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716447289] [2023-04-01 20:29:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:14,863 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 20:29:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716447289] [2023-04-01 20:29:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716447289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:14,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:29:14,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:29:14,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469987303] [2023-04-01 20:29:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:29:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:29:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:29:14,912 INFO L87 Difference]: Start difference. First operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 20:29:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:17,617 INFO L93 Difference]: Finished difference Result 1104 states and 1964 transitions. [2023-04-01 20:29:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:29:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 185 [2023-04-01 20:29:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:17,635 INFO L225 Difference]: With dead ends: 1104 [2023-04-01 20:29:17,635 INFO L226 Difference]: Without dead ends: 696 [2023-04-01 20:29:17,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:29:17,644 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1008 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:17,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 71 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 20:29:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-04-01 20:29:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 472. [2023-04-01 20:29:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 462 states have (on average 1.5389610389610389) internal successors, (711), 464 states have internal predecessors, (711), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:29:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2023-04-01 20:29:17,728 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 185 [2023-04-01 20:29:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2023-04-01 20:29:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 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 20:29:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2023-04-01 20:29:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 20:29:17,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:17,734 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:29:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:29:17,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:17,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 310818117, now seen corresponding path program 1 times [2023-04-01 20:29:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033778157] [2023-04-01 20:29:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033778157] [2023-04-01 20:29:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033778157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:29:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:29:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943677701] [2023-04-01 20:29:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:29:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:29:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:29:18,479 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 4 states have internal predecessors, (188), 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 20:29:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:20,531 INFO L93 Difference]: Finished difference Result 1421 states and 2204 transitions. [2023-04-01 20:29:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:29:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 4 states have internal predecessors, (188), 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 194 [2023-04-01 20:29:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:20,541 INFO L225 Difference]: With dead ends: 1421 [2023-04-01 20:29:20,541 INFO L226 Difference]: Without dead ends: 955 [2023-04-01 20:29:20,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:29:20,549 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 841 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:20,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 137 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:29:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-04-01 20:29:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 932. [2023-04-01 20:29:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 912 states have (on average 1.4616228070175439) internal successors, (1333), 920 states have internal predecessors, (1333), 6 states have call successors, (6), 6 states have call predecessors, (6), 13 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-01 20:29:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1364 transitions. [2023-04-01 20:29:20,623 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1364 transitions. Word has length 194 [2023-04-01 20:29:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:20,629 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1364 transitions. [2023-04-01 20:29:20,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 4 states have internal predecessors, (188), 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 20:29:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1364 transitions. [2023-04-01 20:29:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-04-01 20:29:20,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:20,634 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:29:20,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:29:20,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:20,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash 118826482, now seen corresponding path program 1 times [2023-04-01 20:29:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690595700] [2023-04-01 20:29:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:21,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690595700] [2023-04-01 20:29:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690595700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:21,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:29:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:29:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402366273] [2023-04-01 20:29:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:29:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:29:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:29:21,236 INFO L87 Difference]: Start difference. First operand 932 states and 1364 transitions. Second operand has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 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 20:29:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:23,342 INFO L93 Difference]: Finished difference Result 2823 states and 4255 transitions. [2023-04-01 20:29:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:29:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 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 197 [2023-04-01 20:29:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:23,354 INFO L225 Difference]: With dead ends: 2823 [2023-04-01 20:29:23,354 INFO L226 Difference]: Without dead ends: 1897 [2023-04-01 20:29:23,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:29:23,362 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 780 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:23,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 131 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:29:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2023-04-01 20:29:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1866. [2023-04-01 20:29:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1813 states have (on average 1.4335355763927193) internal successors, (2599), 1846 states have internal predecessors, (2599), 10 states have call successors, (10), 10 states have call predecessors, (10), 42 states have return successors, (116), 9 states have call predecessors, (116), 9 states have call successors, (116) [2023-04-01 20:29:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2725 transitions. [2023-04-01 20:29:23,456 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2725 transitions. Word has length 197 [2023-04-01 20:29:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:23,456 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2725 transitions. [2023-04-01 20:29:23,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 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 20:29:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2725 transitions. [2023-04-01 20:29:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-04-01 20:29:23,464 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:23,464 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:29:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:29:23,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:23,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1373168647, now seen corresponding path program 1 times [2023-04-01 20:29:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963480904] [2023-04-01 20:29:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963480904] [2023-04-01 20:29:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963480904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:24,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:29:24,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:29:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465167579] [2023-04-01 20:29:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:29:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:29:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:29:24,181 INFO L87 Difference]: Start difference. First operand 1866 states and 2725 transitions. Second operand has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 5 states have internal predecessors, (198), 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 20:29:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:26,839 INFO L93 Difference]: Finished difference Result 7136 states and 11011 transitions. [2023-04-01 20:29:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:29:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 5 states have internal predecessors, (198), 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 204 [2023-04-01 20:29:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:26,868 INFO L225 Difference]: With dead ends: 7136 [2023-04-01 20:29:26,868 INFO L226 Difference]: Without dead ends: 5276 [2023-04-01 20:29:26,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:29:26,876 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1058 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:26,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 160 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 20:29:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2023-04-01 20:29:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 5203. [2023-04-01 20:29:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5017 states have (on average 1.34801674307355) internal successors, (6763), 5153 states have internal predecessors, (6763), 25 states have call successors, (25), 25 states have call predecessors, (25), 160 states have return successors, (661), 24 states have call predecessors, (661), 24 states have call successors, (661) [2023-04-01 20:29:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7449 transitions. [2023-04-01 20:29:27,066 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7449 transitions. Word has length 204 [2023-04-01 20:29:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:27,066 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 7449 transitions. [2023-04-01 20:29:27,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 5 states have internal predecessors, (198), 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 20:29:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7449 transitions. [2023-04-01 20:29:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-04-01 20:29:27,079 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:27,079 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:29:27,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:29:27,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:27,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1647551005, now seen corresponding path program 1 times [2023-04-01 20:29:27,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:27,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379800743] [2023-04-01 20:29:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:28,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:28,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379800743] [2023-04-01 20:29:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379800743] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:29:28,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071124911] [2023-04-01 20:29:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:28,959 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 20:29:28,963 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 20:29:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:29,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:29:29,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:29:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:29,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:29:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071124911] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:29,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:29:29,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 20:29:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023199848] [2023-04-01 20:29:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:29,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:29:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:29:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:29:29,487 INFO L87 Difference]: Start difference. First operand 5203 states and 7449 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 20:29:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:30,411 INFO L93 Difference]: Finished difference Result 14722 states and 21664 transitions. [2023-04-01 20:29:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:29:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 206 [2023-04-01 20:29:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:30,455 INFO L225 Difference]: With dead ends: 14722 [2023-04-01 20:29:30,455 INFO L226 Difference]: Without dead ends: 9525 [2023-04-01 20:29:30,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:29:30,469 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 62 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:30,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 433 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 20:29:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2023-04-01 20:29:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 9509. [2023-04-01 20:29:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9200 states have (on average 1.2379347826086957) internal successors, (11389), 9419 states have internal predecessors, (11389), 45 states have call successors, (45), 45 states have call predecessors, (45), 263 states have return successors, (1309), 44 states have call predecessors, (1309), 44 states have call successors, (1309) [2023-04-01 20:29:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 12743 transitions. [2023-04-01 20:29:30,751 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 12743 transitions. Word has length 206 [2023-04-01 20:29:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 12743 transitions. [2023-04-01 20:29:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 20:29:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 12743 transitions. [2023-04-01 20:29:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-04-01 20:29:30,772 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:30,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 20:29:30,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:29:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:30,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:30,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1858525068, now seen corresponding path program 1 times [2023-04-01 20:29:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546675280] [2023-04-01 20:29:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:29:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:29:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546675280] [2023-04-01 20:29:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546675280] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:29:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799058809] [2023-04-01 20:29:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:31,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:31,684 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 20:29:31,686 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 20:29:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:31,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:29:31,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:29:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:29:32,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:29:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799058809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:29:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:29:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570535298] [2023-04-01 20:29:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:29:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:29:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:29:32,145 INFO L87 Difference]: Start difference. First operand 9509 states and 12743 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 20:29:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:32,964 INFO L93 Difference]: Finished difference Result 19015 states and 25503 transitions. [2023-04-01 20:29:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:29:32,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 230 [2023-04-01 20:29:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:33,002 INFO L225 Difference]: With dead ends: 19015 [2023-04-01 20:29:33,002 INFO L226 Difference]: Without dead ends: 9512 [2023-04-01 20:29:33,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:29:33,024 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 58 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:33,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 419 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 20:29:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2023-04-01 20:29:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 9507. [2023-04-01 20:29:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9507 states, 9199 states have (on average 1.222306772475269) internal successors, (11244), 9417 states have internal predecessors, (11244), 45 states have call successors, (45), 45 states have call predecessors, (45), 262 states have return successors, (1248), 44 states have call predecessors, (1248), 44 states have call successors, (1248) [2023-04-01 20:29:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9507 states to 9507 states and 12537 transitions. [2023-04-01 20:29:33,295 INFO L78 Accepts]: Start accepts. Automaton has 9507 states and 12537 transitions. Word has length 230 [2023-04-01 20:29:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:33,295 INFO L495 AbstractCegarLoop]: Abstraction has 9507 states and 12537 transitions. [2023-04-01 20:29:33,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 20:29:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9507 states and 12537 transitions. [2023-04-01 20:29:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-01 20:29:33,319 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:33,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:29:33,332 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 20:29:33,526 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 20:29:33,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:33,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -244355360, now seen corresponding path program 1 times [2023-04-01 20:29:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499314312] [2023-04-01 20:29:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499314312] [2023-04-01 20:29:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499314312] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:34,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:29:34,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:29:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55322015] [2023-04-01 20:29:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:29:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:29:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:29:34,757 INFO L87 Difference]: Start difference. First operand 9507 states and 12537 transitions. Second operand has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 5 states have internal predecessors, (256), 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 20:29:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:39,149 INFO L93 Difference]: Finished difference Result 28984 states and 42328 transitions. [2023-04-01 20:29:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 20:29:39,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 5 states have internal predecessors, (256), 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 262 [2023-04-01 20:29:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:39,245 INFO L225 Difference]: With dead ends: 28984 [2023-04-01 20:29:39,246 INFO L226 Difference]: Without dead ends: 19483 [2023-04-01 20:29:39,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-04-01 20:29:39,276 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 2019 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 4409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:39,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 311 Invalid, 4409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 20:29:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2023-04-01 20:29:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19077. [2023-04-01 20:29:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19077 states, 18417 states have (on average 1.2084487158603465) internal successors, (22256), 18889 states have internal predecessors, (22256), 100 states have call successors, (100), 88 states have call predecessors, (100), 559 states have return successors, (3054), 99 states have call predecessors, (3054), 99 states have call successors, (3054) [2023-04-01 20:29:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19077 states to 19077 states and 25410 transitions. [2023-04-01 20:29:39,927 INFO L78 Accepts]: Start accepts. Automaton has 19077 states and 25410 transitions. Word has length 262 [2023-04-01 20:29:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:39,928 INFO L495 AbstractCegarLoop]: Abstraction has 19077 states and 25410 transitions. [2023-04-01 20:29:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 5 states have internal predecessors, (256), 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 20:29:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 19077 states and 25410 transitions. [2023-04-01 20:29:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-04-01 20:29:39,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:39,985 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 20:29:39,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:39,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1087504856, now seen corresponding path program 1 times [2023-04-01 20:29:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629646196] [2023-04-01 20:29:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:29:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:29:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629646196] [2023-04-01 20:29:43,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629646196] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:29:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821824664] [2023-04-01 20:29:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:43,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:43,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:43,989 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 20:29:44,015 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 20:29:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:44,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:29:44,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:29:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 20:29:44,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:29:44,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821824664] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:29:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:29:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2023-04-01 20:29:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795175866] [2023-04-01 20:29:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:29:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:29:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:29:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:29:44,444 INFO L87 Difference]: Start difference. First operand 19077 states and 25410 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 20:29:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:45,394 INFO L93 Difference]: Finished difference Result 45053 states and 61854 transitions. [2023-04-01 20:29:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:29:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 273 [2023-04-01 20:29:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:45,496 INFO L225 Difference]: With dead ends: 45053 [2023-04-01 20:29:45,496 INFO L226 Difference]: Without dead ends: 25982 [2023-04-01 20:29:45,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:29:45,547 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 78 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:45,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 408 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 20:29:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25982 states. [2023-04-01 20:29:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25982 to 25940. [2023-04-01 20:29:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25940 states, 25100 states have (on average 1.2210358565737052) internal successors, (30648), 25684 states have internal predecessors, (30648), 136 states have call successors, (136), 120 states have call predecessors, (136), 703 states have return successors, (4551), 135 states have call predecessors, (4551), 135 states have call successors, (4551) [2023-04-01 20:29:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25940 states to 25940 states and 35335 transitions. [2023-04-01 20:29:46,317 INFO L78 Accepts]: Start accepts. Automaton has 25940 states and 35335 transitions. Word has length 273 [2023-04-01 20:29:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:46,317 INFO L495 AbstractCegarLoop]: Abstraction has 25940 states and 35335 transitions. [2023-04-01 20:29:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 20:29:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 25940 states and 35335 transitions. [2023-04-01 20:29:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-04-01 20:29:46,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:46,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:29:46,400 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 20:29:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:46,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:46,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1393764939, now seen corresponding path program 1 times [2023-04-01 20:29:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:46,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620369776] [2023-04-01 20:29:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:29:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-01 20:29:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 20:29:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620369776] [2023-04-01 20:29:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620369776] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:29:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996170955] [2023-04-01 20:29:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:47,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:47,823 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 20:29:47,825 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 20:29:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:48,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:29:48,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:29:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 20:29:48,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:29:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 20:29:48,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996170955] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:29:48,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:29:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 20:29:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995096987] [2023-04-01 20:29:48,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:29:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:29:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:29:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:29:48,548 INFO L87 Difference]: Start difference. First operand 25940 states and 35335 transitions. Second operand has 12 states, 12 states have (on average 41.833333333333336) internal successors, (502), 10 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:29:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:52,472 INFO L93 Difference]: Finished difference Result 55379 states and 79229 transitions. [2023-04-01 20:29:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 20:29:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 41.833333333333336) internal successors, (502), 10 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 333 [2023-04-01 20:29:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:52,587 INFO L225 Difference]: With dead ends: 55379 [2023-04-01 20:29:52,588 INFO L226 Difference]: Without dead ends: 29445 [2023-04-01 20:29:52,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 685 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 20:29:52,648 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2283 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:52,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2283 Valid, 257 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 20:29:52,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29445 states. [2023-04-01 20:29:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29445 to 29067. [2023-04-01 20:29:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29067 states, 28075 states have (on average 1.1455031166518255) internal successors, (32160), 28785 states have internal predecessors, (32160), 148 states have call successors, (148), 134 states have call predecessors, (148), 843 states have return successors, (3497), 147 states have call predecessors, (3497), 147 states have call successors, (3497) [2023-04-01 20:29:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29067 states to 29067 states and 35805 transitions. [2023-04-01 20:29:53,480 INFO L78 Accepts]: Start accepts. Automaton has 29067 states and 35805 transitions. Word has length 333 [2023-04-01 20:29:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:53,480 INFO L495 AbstractCegarLoop]: Abstraction has 29067 states and 35805 transitions. [2023-04-01 20:29:53,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.833333333333336) internal successors, (502), 10 states have internal predecessors, (502), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:29:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29067 states and 35805 transitions. [2023-04-01 20:29:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-04-01 20:29:53,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:53,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:29:53,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:29:53,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:53,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:53,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -8557586, now seen corresponding path program 1 times [2023-04-01 20:29:53,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900684166] [2023-04-01 20:29:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:29:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:29:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:29:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900684166] [2023-04-01 20:29:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900684166] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:29:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042397928] [2023-04-01 20:29:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:29:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:29:54,467 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 20:29:54,469 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 20:29:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:54,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:29:54,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:29:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:54,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:29:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:29:55,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042397928] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:29:55,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:29:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2023-04-01 20:29:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149893364] [2023-04-01 20:29:55,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:29:55,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:29:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:29:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:29:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:29:55,285 INFO L87 Difference]: Start difference. First operand 29067 states and 35805 transitions. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 6 states have internal predecessors, (463), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 20:29:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:29:57,941 INFO L93 Difference]: Finished difference Result 55661 states and 71414 transitions. [2023-04-01 20:29:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 20:29:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 6 states have internal predecessors, (463), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 340 [2023-04-01 20:29:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:29:58,047 INFO L225 Difference]: With dead ends: 55661 [2023-04-01 20:29:58,047 INFO L226 Difference]: Without dead ends: 26600 [2023-04-01 20:29:58,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:29:58,099 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1398 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:29:58,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 136 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 20:29:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26600 states. [2023-04-01 20:29:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26600 to 25690. [2023-04-01 20:29:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25690 states, 24674 states have (on average 1.1256383237415903) internal successors, (27774), 25440 states have internal predecessors, (27774), 133 states have call successors, (133), 117 states have call predecessors, (133), 882 states have return successors, (2795), 132 states have call predecessors, (2795), 132 states have call successors, (2795) [2023-04-01 20:29:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25690 states to 25690 states and 30702 transitions. [2023-04-01 20:29:58,772 INFO L78 Accepts]: Start accepts. Automaton has 25690 states and 30702 transitions. Word has length 340 [2023-04-01 20:29:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:29:58,773 INFO L495 AbstractCegarLoop]: Abstraction has 25690 states and 30702 transitions. [2023-04-01 20:29:58,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 6 states have internal predecessors, (463), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 20:29:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 25690 states and 30702 transitions. [2023-04-01 20:29:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-04-01 20:29:58,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:29:58,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:58,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:29:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 20:29:59,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:29:59,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:29:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 713067304, now seen corresponding path program 1 times [2023-04-01 20:29:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:29:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891381259] [2023-04-01 20:29:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:29:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:29:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:29:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:29:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:29:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:29:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-01 20:30:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 176 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 20:30:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:30:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891381259] [2023-04-01 20:30:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891381259] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:30:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286384611] [2023-04-01 20:30:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:30:00,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:30:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:30:00,069 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 20:30:00,072 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 20:30:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:00,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:30:00,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:30:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:30:00,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:30:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:30:00,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286384611] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:30:00,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:30:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-04-01 20:30:00,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600422727] [2023-04-01 20:30:00,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:30:00,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:30:00,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:30:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:30:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:30:00,897 INFO L87 Difference]: Start difference. First operand 25690 states and 30702 transitions. Second operand has 11 states, 11 states have (on average 46.81818181818182) internal successors, (515), 9 states have internal predecessors, (515), 4 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:30:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:30:04,138 INFO L93 Difference]: Finished difference Result 51632 states and 63391 transitions. [2023-04-01 20:30:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 20:30:04,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 46.81818181818182) internal successors, (515), 9 states have internal predecessors, (515), 4 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 348 [2023-04-01 20:30:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:30:04,224 INFO L225 Difference]: With dead ends: 51632 [2023-04-01 20:30:04,224 INFO L226 Difference]: Without dead ends: 25956 [2023-04-01 20:30:04,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-04-01 20:30:04,267 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1356 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:30:04,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 124 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 20:30:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25956 states. [2023-04-01 20:30:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25956 to 25142. [2023-04-01 20:30:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 24302 states have (on average 1.093901736482594) internal successors, (26584), 24897 states have internal predecessors, (26584), 128 states have call successors, (128), 117 states have call predecessors, (128), 711 states have return successors, (1981), 127 states have call predecessors, (1981), 127 states have call successors, (1981) [2023-04-01 20:30:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 28693 transitions. [2023-04-01 20:30:04,895 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 28693 transitions. Word has length 348 [2023-04-01 20:30:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:30:04,896 INFO L495 AbstractCegarLoop]: Abstraction has 25142 states and 28693 transitions. [2023-04-01 20:30:04,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.81818181818182) internal successors, (515), 9 states have internal predecessors, (515), 4 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:30:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 28693 transitions. [2023-04-01 20:30:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-04-01 20:30:04,935 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:30:04,935 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:30:04,944 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 20:30:05,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:30:05,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:30:05,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:30:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2139273031, now seen corresponding path program 1 times [2023-04-01 20:30:05,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:30:05,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582738111] [2023-04-01 20:30:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:30:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:30:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:05,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:30:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:06,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:30:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-01 20:30:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-01 20:30:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 226 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 20:30:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:30:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582738111] [2023-04-01 20:30:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582738111] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:30:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16984464] [2023-04-01 20:30:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:30:06,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:30:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:30:06,214 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 20:30:06,216 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 20:30:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:30:06,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:30:06,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:30:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 20:30:06,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:30:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16984464] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:30:06,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:30:06,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 20:30:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852593856] [2023-04-01 20:30:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:30:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:30:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:30:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:30:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:30:06,726 INFO L87 Difference]: Start difference. First operand 25142 states and 28693 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 20:30:07,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:30:07,668 INFO L93 Difference]: Finished difference Result 54569 states and 62688 transitions. [2023-04-01 20:30:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:30:07,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 398 [2023-04-01 20:30:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:30:07,671 INFO L225 Difference]: With dead ends: 54569 [2023-04-01 20:30:07,671 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:30:07,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:30:07,732 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 54 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:30:07,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 352 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 20:30:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:30:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:30:07,733 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 20:30:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:30:07,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 398 [2023-04-01 20:30:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:30:07,735 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:30:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 20:30:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:30:07,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:30:07,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:30:07,751 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 20:30:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:30:07,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.