/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/Problem13_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:26:22,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:26:22,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:26:22,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:26:22,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:26:22,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:26:22,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:26:22,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:26:22,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:26:22,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:26:22,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:26:22,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:26:22,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:26:22,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:26:22,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:26:22,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:26:22,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:26:22,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:26:22,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:26:22,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:26:22,821 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 [2023-03-30 23:26:22,850 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:26:22,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:26:22,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:26:22,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:26:22,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:26:22,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:26:22,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:26:22,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:26:22,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:26:22,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:26:22,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:26:22,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:26:22,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:26:22,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:26:22,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:26:22,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:26:22,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:26:22,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:26:22,857 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:26:22,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:26:23,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:26:23,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:26:23,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:26:23,099 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:26:23,100 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:26:23,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2023-03-30 23:26:24,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:26:24,818 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:26:24,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2023-03-30 23:26:24,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c915558bb/34d427d8abb44d77a7a3aa6054cfde43/FLAG1fcf366f2 [2023-03-30 23:26:24,870 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c915558bb/34d427d8abb44d77a7a3aa6054cfde43 [2023-03-30 23:26:24,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:26:24,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:26:24,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:26:24,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:26:24,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:26:24,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:26:24" (1/1) ... [2023-03-30 23:26:24,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4aa5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:24, skipping insertion in model container [2023-03-30 23:26:24,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:26:24" (1/1) ... [2023-03-30 23:26:24,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:26:25,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:26:25,305 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/Problem13_label52.c[9091,9104] [2023-03-30 23:26:26,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:26:26,135 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:26:26,165 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/Problem13_label52.c[9091,9104] [2023-03-30 23:26:26,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:26:26,630 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:26:26,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26 WrapperNode [2023-03-30 23:26:26,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:26:26,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:26:26,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:26:26,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:26:26,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,865 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:26:26,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:26:26,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:26:26,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:26:26,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (1/1) ... [2023-03-30 23:26:26,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:26:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:26:26,954 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) [2023-03-30 23:26:26,961 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 [2023-03-30 23:26:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:26:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:26:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:26:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:26:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:26:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:26:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:26:26,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:26:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:26:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:26:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:26:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:26:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:26:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:26:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:26:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:26:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:26:27,074 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:26:27,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:26:32,037 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:26:32,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:26:32,057 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:26:32,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:26:32 BoogieIcfgContainer [2023-03-30 23:26:32,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:26:32,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:26:32,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:26:32,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:26:32,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:26:24" (1/3) ... [2023-03-30 23:26:32,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a9f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:26:32, skipping insertion in model container [2023-03-30 23:26:32,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:26:26" (2/3) ... [2023-03-30 23:26:32,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a9f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:26:32, skipping insertion in model container [2023-03-30 23:26:32,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:26:32" (3/3) ... [2023-03-30 23:26:32,071 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2023-03-30 23:26:32,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:26:32,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:26:32,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:26:32,167 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;@6122a77c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:26:32,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:26:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-30 23:26:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-30 23:26:32,189 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:26:32,189 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] [2023-03-30 23:26:32,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:26:32,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:26:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 773521009, now seen corresponding path program 1 times [2023-03-30 23:26:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:26:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578405615] [2023-03-30 23:26:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:26:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:26:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:26:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:26:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:26:32,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578405615] [2023-03-30 23:26:32,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578405615] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:26:32,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:26:32,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:26:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021665802] [2023-03-30 23:26:32,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:26:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:26:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:26:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:26:32,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:26:32,748 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2023-03-30 23:26:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:26:39,206 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2023-03-30 23:26:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:26:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 70 [2023-03-30 23:26:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:26:39,230 INFO L225 Difference]: With dead ends: 3230 [2023-03-30 23:26:39,231 INFO L226 Difference]: Without dead ends: 2026 [2023-03-30 23:26:39,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:26:39,244 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2995 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2995 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:26:39,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2995 Valid, 300 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-03-30 23:26:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-03-30 23:26:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2023-03-30 23:26:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1981 states have (on average 1.6436143361938416) internal successors, (3256), 1983 states have internal predecessors, (3256), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2023-03-30 23:26:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2023-03-30 23:26:39,392 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 70 [2023-03-30 23:26:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:26:39,395 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2023-03-30 23:26:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2023-03-30 23:26:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2023-03-30 23:26:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-03-30 23:26:39,402 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:26:39,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:26:39,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:26:39,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:26:39,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:26:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash 263104357, now seen corresponding path program 1 times [2023-03-30 23:26:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:26:39,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258611657] [2023-03-30 23:26:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:26:39,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:26:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:26:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:26:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:26:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:26:39,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258611657] [2023-03-30 23:26:39,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258611657] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:26:39,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:26:39,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:26:39,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957185569] [2023-03-30 23:26:39,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:26:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:26:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:26:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:26:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:26:39,976 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 4 states have internal predecessors, (139), 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) [2023-03-30 23:26:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:26:47,806 INFO L93 Difference]: Finished difference Result 5863 states and 9700 transitions. [2023-03-30 23:26:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:26:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 4 states have internal predecessors, (139), 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 145 [2023-03-30 23:26:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:26:47,837 INFO L225 Difference]: With dead ends: 5863 [2023-03-30 23:26:47,838 INFO L226 Difference]: Without dead ends: 3860 [2023-03-30 23:26:47,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:26:47,853 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3296 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 7739 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 8924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 7739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:26:47,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3296 Valid, 815 Invalid, 8924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 7739 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-03-30 23:26:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2023-03-30 23:26:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3760. [2023-03-30 23:26:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3688 states have (on average 1.4899674620390455) internal successors, (5495), 3700 states have internal predecessors, (5495), 18 states have call successors, (18), 18 states have call predecessors, (18), 53 states have return successors, (117), 41 states have call predecessors, (117), 17 states have call successors, (117) [2023-03-30 23:26:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5630 transitions. [2023-03-30 23:26:47,978 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5630 transitions. Word has length 145 [2023-03-30 23:26:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:26:47,980 INFO L495 AbstractCegarLoop]: Abstraction has 3760 states and 5630 transitions. [2023-03-30 23:26:47,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 4 states have internal predecessors, (139), 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) [2023-03-30 23:26:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5630 transitions. [2023-03-30 23:26:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-30 23:26:47,987 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:26:47,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:26:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:26:47,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:26:47,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:26:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2038213175, now seen corresponding path program 1 times [2023-03-30 23:26:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:26:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727318001] [2023-03-30 23:26:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:26:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:26:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:26:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:26:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:26:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:26:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727318001] [2023-03-30 23:26:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727318001] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:26:48,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:26:48,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:26:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690104115] [2023-03-30 23:26:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:26:48,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:26:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:26:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:26:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:26:48,464 INFO L87 Difference]: Start difference. First operand 3760 states and 5630 transitions. Second operand has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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) [2023-03-30 23:26:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:26:56,978 INFO L93 Difference]: Finished difference Result 14591 states and 22901 transitions. [2023-03-30 23:26:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:26:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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 159 [2023-03-30 23:26:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:26:57,028 INFO L225 Difference]: With dead ends: 14591 [2023-03-30 23:26:57,028 INFO L226 Difference]: Without dead ends: 10837 [2023-03-30 23:26:57,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:26:57,041 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 4932 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 8284 mSolverCounterSat, 1969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 10253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1969 IncrementalHoareTripleChecker+Valid, 8284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:26:57,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 813 Invalid, 10253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1969 Valid, 8284 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-03-30 23:26:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2023-03-30 23:26:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 10751. [2023-03-30 23:26:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10420 states have (on average 1.3433781190019194) internal successors, (13998), 10488 states have internal predecessors, (13998), 50 states have call successors, (50), 50 states have call predecessors, (50), 280 states have return successors, (1257), 212 states have call predecessors, (1257), 49 states have call successors, (1257) [2023-03-30 23:26:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 15305 transitions. [2023-03-30 23:26:57,315 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 15305 transitions. Word has length 159 [2023-03-30 23:26:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:26:57,316 INFO L495 AbstractCegarLoop]: Abstraction has 10751 states and 15305 transitions. [2023-03-30 23:26:57,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 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) [2023-03-30 23:26:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 15305 transitions. [2023-03-30 23:26:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-03-30 23:26:57,318 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:26:57,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:26:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:26:57,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:26:57,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:26:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash 944387300, now seen corresponding path program 1 times [2023-03-30 23:26:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:26:57,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660375492] [2023-03-30 23:26:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:26:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:26:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:26:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:26:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:26:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:26:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:26:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660375492] [2023-03-30 23:26:57,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660375492] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:26:57,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:26:57,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:26:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442242828] [2023-03-30 23:26:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:26:57,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:26:57,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:26:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:26:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:26:57,791 INFO L87 Difference]: Start difference. First operand 10751 states and 15305 transitions. Second operand has 8 states, 7 states have (on average 26.0) internal successors, (182), 5 states have internal predecessors, (182), 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) [2023-03-30 23:27:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:05,743 INFO L93 Difference]: Finished difference Result 39561 states and 60675 transitions. [2023-03-30 23:27:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:27:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 26.0) internal successors, (182), 5 states have internal predecessors, (182), 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 188 [2023-03-30 23:27:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:05,867 INFO L225 Difference]: With dead ends: 39561 [2023-03-30 23:27:05,867 INFO L226 Difference]: Without dead ends: 28816 [2023-03-30 23:27:05,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:27:05,912 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 5236 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 7481 mSolverCounterSat, 2178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 9659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2178 IncrementalHoareTripleChecker+Valid, 7481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:05,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 569 Invalid, 9659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2178 Valid, 7481 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-03-30 23:27:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28816 states. [2023-03-30 23:27:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28816 to 28710. [2023-03-30 23:27:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28710 states, 27783 states have (on average 1.2116402116402116) internal successors, (33663), 28013 states have internal predecessors, (33663), 134 states have call successors, (134), 134 states have call predecessors, (134), 792 states have return successors, (5011), 562 states have call predecessors, (5011), 133 states have call successors, (5011) [2023-03-30 23:27:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 38808 transitions. [2023-03-30 23:27:06,678 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 38808 transitions. Word has length 188 [2023-03-30 23:27:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:06,679 INFO L495 AbstractCegarLoop]: Abstraction has 28710 states and 38808 transitions. [2023-03-30 23:27:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 26.0) internal successors, (182), 5 states have internal predecessors, (182), 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) [2023-03-30 23:27:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 38808 transitions. [2023-03-30 23:27:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-03-30 23:27:06,686 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:06,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:27:06,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:06,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1912423381, now seen corresponding path program 1 times [2023-03-30 23:27:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251669629] [2023-03-30 23:27:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-30 23:27:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-30 23:27:07,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:07,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251669629] [2023-03-30 23:27:07,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251669629] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:07,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598791203] [2023-03-30 23:27:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:07,069 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) [2023-03-30 23:27:07,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:27:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:07,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:27:07,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-30 23:27:07,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:27:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598791203] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:27:07,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:27:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044207710] [2023-03-30 23:27:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:27:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:27:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:27:07,371 INFO L87 Difference]: Start difference. First operand 28710 states and 38808 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-03-30 23:27:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:27:10,926 INFO L93 Difference]: Finished difference Result 64221 states and 88794 transitions. [2023-03-30 23:27:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:27:10,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 270 [2023-03-30 23:27:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:27:11,071 INFO L225 Difference]: With dead ends: 64221 [2023-03-30 23:27:11,071 INFO L226 Difference]: Without dead ends: 35517 [2023-03-30 23:27:11,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:27:11,132 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 796 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:27:11,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 2073 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-03-30 23:27:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35517 states. [2023-03-30 23:27:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35517 to 35496. [2023-03-30 23:27:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35496 states, 34367 states have (on average 1.1874763581342567) internal successors, (40810), 34651 states have internal predecessors, (40810), 166 states have call successors, (166), 166 states have call predecessors, (166), 962 states have return successors, (6525), 678 states have call predecessors, (6525), 165 states have call successors, (6525) [2023-03-30 23:27:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35496 states to 35496 states and 47501 transitions. [2023-03-30 23:27:11,970 INFO L78 Accepts]: Start accepts. Automaton has 35496 states and 47501 transitions. Word has length 270 [2023-03-30 23:27:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:27:11,971 INFO L495 AbstractCegarLoop]: Abstraction has 35496 states and 47501 transitions. [2023-03-30 23:27:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-03-30 23:27:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 35496 states and 47501 transitions. [2023-03-30 23:27:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-03-30 23:27:11,977 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:27:11,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:27:11,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:27:12,184 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 [2023-03-30 23:27:12,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:27:12,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:27:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -273860895, now seen corresponding path program 1 times [2023-03-30 23:27:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:27:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263727125] [2023-03-30 23:27:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:27:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:27:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:27:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-30 23:27:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 127 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:27:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:27:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263727125] [2023-03-30 23:27:13,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263727125] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:27:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842808771] [2023-03-30 23:27:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:27:13,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:27:13,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:27:13,282 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) [2023-03-30 23:27:13,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:27:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:27:13,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:27:13,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:27:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-03-30 23:27:13,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:27:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842808771] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:27:13,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:27:13,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-03-30 23:27:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570813226] [2023-03-30 23:27:13,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:27:13,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:27:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:27:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:27:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:27:13,511 INFO L87 Difference]: Start difference. First operand 35496 states and 47501 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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)