/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/Problem19_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:57:27,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:57:27,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:57:27,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:57:27,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:57:27,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:57:27,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:57:27,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:57:27,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:57:27,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:57:27,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:57:27,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:57:27,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:57:27,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:57:27,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:57:27,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:57:27,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:57:27,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:57:27,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:57:27,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:57:27,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:57:27,205 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:57:27,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:57:27,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:57:27,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:57:27,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:57:27,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:57:27,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:57:27,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:57:27,208 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:57:27,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:57:27,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:57:27,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:57:27,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:57:27,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:57:27,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:57:27,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:57:27,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:57:27,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:57:27,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:27,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:57:27,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:57:27,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:57:27,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:57:27,212 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:57:27,213 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:57:27,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:57:27,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:57:27,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:57:27,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:57:27,461 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:57:27,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2023-04-01 23:57:28,569 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:57:29,186 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:57:29,187 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2023-04-01 23:57:29,227 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5da9708f5/4fdd93bd30c54ed6a909e6045b2a54e7/FLAG59f569b79 [2023-04-01 23:57:29,241 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5da9708f5/4fdd93bd30c54ed6a909e6045b2a54e7 [2023-04-01 23:57:29,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:57:29,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:57:29,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:29,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:57:29,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:57:29,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:29" (1/1) ... [2023-04-01 23:57:29,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db24ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:29, skipping insertion in model container [2023-04-01 23:57:29,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:29" (1/1) ... [2023-04-01 23:57:29,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:57:29,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:57:29,704 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/Problem19_label34.c[6640,6653] [2023-04-01 23:57:30,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:30,912 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:57:30,933 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/Problem19_label34.c[6640,6653] [2023-04-01 23:57:31,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:31,663 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:57:31,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31 WrapperNode [2023-04-01 23:57:31,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:31,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:57:31,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:57:31,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:57:31,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:31,979 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:32,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:32,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:57:32,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:57:32,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:57:32,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:57:32,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (1/1) ... [2023-04-01 23:57:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:32,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:57:32,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:57:32,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:57:32,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:57:32,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:57:32,141 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:57:32,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:57:32,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:57:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:57:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:57:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:57:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:57:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:57:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:57:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:57:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:57:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:57:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:57:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:57:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:57:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:57:32,312 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:57:32,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:57:39,562 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:57:39,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:57:39,584 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:57:39,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:39 BoogieIcfgContainer [2023-04-01 23:57:39,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:57:39,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:57:39,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:57:39,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:57:39,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:57:29" (1/3) ... [2023-04-01 23:57:39,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8eb244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:39, skipping insertion in model container [2023-04-01 23:57:39,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:31" (2/3) ... [2023-04-01 23:57:39,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8eb244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:39, skipping insertion in model container [2023-04-01 23:57:39,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:39" (3/3) ... [2023-04-01 23:57:39,599 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label34.c [2023-04-01 23:57:39,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:57:39,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:57:39,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:57:39,702 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;@7510bae3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:57:39,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:57:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 23:57:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 23:57:39,720 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:57:39,721 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] [2023-04-01 23:57:39,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:57:39,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:57:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash 719630612, now seen corresponding path program 1 times [2023-04-01 23:57:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:57:39,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553054132] [2023-04-01 23:57:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:57:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:57:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:57:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:57:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:57:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553054132] [2023-04-01 23:57:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553054132] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:57:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:57:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:57:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55771356] [2023-04-01 23:57:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:57:40,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:57:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:57:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:57:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:57:40,400 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:57:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:57:51,569 INFO L93 Difference]: Finished difference Result 5086 states and 9561 transitions. [2023-04-01 23:57:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:57:51,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 56 [2023-04-01 23:57:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:57:51,599 INFO L225 Difference]: With dead ends: 5086 [2023-04-01 23:57:51,599 INFO L226 Difference]: Without dead ends: 3245 [2023-04-01 23:57:51,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:57:51,611 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 4978 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9242 mSolverCounterSat, 1365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 10607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1365 IncrementalHoareTripleChecker+Valid, 9242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:57:51,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 376 Invalid, 10607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1365 Valid, 9242 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-04-01 23:57:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2023-04-01 23:57:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3178. [2023-04-01 23:57:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3142 states have (on average 1.846594525779758) internal successors, (5802), 3144 states have internal predecessors, (5802), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (33), 19 states have call predecessors, (33), 13 states have call successors, (33) [2023-04-01 23:57:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5849 transitions. [2023-04-01 23:57:51,781 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5849 transitions. Word has length 56 [2023-04-01 23:57:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:57:51,783 INFO L495 AbstractCegarLoop]: Abstraction has 3178 states and 5849 transitions. [2023-04-01 23:57:51,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:57:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5849 transitions. [2023-04-01 23:57:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 23:57:51,790 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:57:51,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:57:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:57:51,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:57:51,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:57:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -958720867, now seen corresponding path program 1 times [2023-04-01 23:57:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:57:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342355866] [2023-04-01 23:57:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:57:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:57:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:52,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:57:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:57:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:57:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:57:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342355866] [2023-04-01 23:57:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342355866] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:57:52,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:57:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:57:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139159561] [2023-04-01 23:57:52,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:57:52,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:57:52,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:57:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:57:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:57:52,183 INFO L87 Difference]: Start difference. First operand 3178 states and 5849 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:11,745 INFO L93 Difference]: Finished difference Result 16333 states and 30897 transitions. [2023-04-01 23:58:11,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:58:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 127 [2023-04-01 23:58:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:11,820 INFO L225 Difference]: With dead ends: 16333 [2023-04-01 23:58:11,821 INFO L226 Difference]: Without dead ends: 13161 [2023-04-01 23:58:11,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:58:11,838 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 21915 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 15086 mSolverCounterSat, 5200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21915 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 20286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5200 IncrementalHoareTripleChecker+Valid, 15086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:11,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21915 Valid, 1035 Invalid, 20286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5200 Valid, 15086 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2023-04-01 23:58:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2023-04-01 23:58:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 13115. [2023-04-01 23:58:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12949 states have (on average 1.535794269827786) internal successors, (19887), 12958 states have internal predecessors, (19887), 56 states have call successors, (56), 56 states have call predecessors, (56), 109 states have return successors, (550), 100 states have call predecessors, (550), 55 states have call successors, (550) [2023-04-01 23:58:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 20493 transitions. [2023-04-01 23:58:12,169 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 20493 transitions. Word has length 127 [2023-04-01 23:58:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:12,171 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 20493 transitions. [2023-04-01 23:58:12,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 20493 transitions. [2023-04-01 23:58:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-01 23:58:12,180 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:12,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:58:12,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:58:12,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:12,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -462838097, now seen corresponding path program 1 times [2023-04-01 23:58:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622530269] [2023-04-01 23:58:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:12,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622530269] [2023-04-01 23:58:12,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622530269] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:12,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:12,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642888556] [2023-04-01 23:58:12,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:12,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:12,696 INFO L87 Difference]: Start difference. First operand 13115 states and 20493 transitions. Second operand has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:23,625 INFO L93 Difference]: Finished difference Result 39768 states and 64512 transitions. [2023-04-01 23:58:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 4 states have internal predecessors, (152), 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 158 [2023-04-01 23:58:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:23,721 INFO L225 Difference]: With dead ends: 39768 [2023-04-01 23:58:23,722 INFO L226 Difference]: Without dead ends: 26659 [2023-04-01 23:58:23,757 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 [2023-04-01 23:58:23,760 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 8831 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9523 mSolverCounterSat, 2457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8831 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 11980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2457 IncrementalHoareTripleChecker+Valid, 9523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:23,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8831 Valid, 952 Invalid, 11980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2457 Valid, 9523 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 23:58:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26659 states. [2023-04-01 23:58:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26659 to 26416. [2023-04-01 23:58:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26416 states, 25924 states have (on average 1.3483258756364758) internal successors, (34954), 25981 states have internal predecessors, (34954), 110 states have call successors, (110), 110 states have call predecessors, (110), 381 states have return successors, (2637), 324 states have call predecessors, (2637), 109 states have call successors, (2637) [2023-04-01 23:58:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26416 states to 26416 states and 37701 transitions. [2023-04-01 23:58:24,437 INFO L78 Accepts]: Start accepts. Automaton has 26416 states and 37701 transitions. Word has length 158 [2023-04-01 23:58:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:24,438 INFO L495 AbstractCegarLoop]: Abstraction has 26416 states and 37701 transitions. [2023-04-01 23:58:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26416 states and 37701 transitions. [2023-04-01 23:58:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-04-01 23:58:24,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:24,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:58:24,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:58:24,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:24,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -190982415, now seen corresponding path program 1 times [2023-04-01 23:58:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806692817] [2023-04-01 23:58:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806692817] [2023-04-01 23:58:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806692817] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:24,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:24,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:58:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024936733] [2023-04-01 23:58:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:24,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:58:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:58:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:58:24,856 INFO L87 Difference]: Start difference. First operand 26416 states and 37701 transitions. Second operand has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 5 states have internal predecessors, (192), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:35,272 INFO L93 Difference]: Finished difference Result 62228 states and 90753 transitions. [2023-04-01 23:58:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:58:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 5 states have internal predecessors, (192), 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 198 [2023-04-01 23:58:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:35,391 INFO L225 Difference]: With dead ends: 62228 [2023-04-01 23:58:35,391 INFO L226 Difference]: Without dead ends: 35818 [2023-04-01 23:58:35,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:58:35,445 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 8267 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 11429 mSolverCounterSat, 2016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8267 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 13445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2016 IncrementalHoareTripleChecker+Valid, 11429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:35,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8267 Valid, 965 Invalid, 13445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2016 Valid, 11429 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-04-01 23:58:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35818 states. [2023-04-01 23:58:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35818 to 35676. [2023-04-01 23:58:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35676 states, 34776 states have (on average 1.2476995629169543) internal successors, (43390), 34908 states have internal predecessors, (43390), 146 states have call successors, (146), 146 states have call predecessors, (146), 753 states have return successors, (4810), 621 states have call predecessors, (4810), 145 states have call successors, (4810) [2023-04-01 23:58:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35676 states to 35676 states and 48346 transitions. [2023-04-01 23:58:36,228 INFO L78 Accepts]: Start accepts. Automaton has 35676 states and 48346 transitions. Word has length 198 [2023-04-01 23:58:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:36,230 INFO L495 AbstractCegarLoop]: Abstraction has 35676 states and 48346 transitions. [2023-04-01 23:58:36,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 5 states have internal predecessors, (192), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 35676 states and 48346 transitions. [2023-04-01 23:58:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-01 23:58:36,233 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:36,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:58:36,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:58:36,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:36,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1988967614, now seen corresponding path program 1 times [2023-04-01 23:58:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:36,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954665704] [2023-04-01 23:58:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954665704] [2023-04-01 23:58:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954665704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:36,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:36,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154182775] [2023-04-01 23:58:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:36,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:36,759 INFO L87 Difference]: Start difference. First operand 35676 states and 48346 transitions. Second operand has 7 states, 6 states have (on average 35.333333333333336) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:49,638 INFO L93 Difference]: Finished difference Result 103887 states and 151578 transitions. [2023-04-01 23:58:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 35.333333333333336) internal successors, (212), 4 states have internal predecessors, (212), 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 218 [2023-04-01 23:58:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:49,878 INFO L225 Difference]: With dead ends: 103887 [2023-04-01 23:58:49,878 INFO L226 Difference]: Without dead ends: 68217 [2023-04-01 23:58:49,947 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 [2023-04-01 23:58:49,948 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 8127 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 11467 mSolverCounterSat, 2115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8127 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 13582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2115 IncrementalHoareTripleChecker+Valid, 11467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:49,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8127 Valid, 1105 Invalid, 13582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2115 Valid, 11467 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-04-01 23:58:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68217 states. [2023-04-01 23:58:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68217 to 67574. [2023-04-01 23:58:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67574 states, 65454 states have (on average 1.1703639196993307) internal successors, (76605), 65829 states have internal predecessors, (76605), 272 states have call successors, (272), 272 states have call predecessors, (272), 1847 states have return successors, (13652), 1472 states have call predecessors, (13652), 271 states have call successors, (13652) [2023-04-01 23:58:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67574 states to 67574 states and 90529 transitions. [2023-04-01 23:58:51,702 INFO L78 Accepts]: Start accepts. Automaton has 67574 states and 90529 transitions. Word has length 218 [2023-04-01 23:58:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:51,703 INFO L495 AbstractCegarLoop]: Abstraction has 67574 states and 90529 transitions. [2023-04-01 23:58:51,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 35.333333333333336) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 67574 states and 90529 transitions. [2023-04-01 23:58:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-04-01 23:58:51,709 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:51,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 23:58:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:58:51,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:51,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash 126774869, now seen corresponding path program 1 times [2023-04-01 23:58:51,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353985003] [2023-04-01 23:58:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:51,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:51,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-01 23:58:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-01 23:58:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 147 proven. 155 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 23:58:52,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353985003] [2023-04-01 23:58:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353985003] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095580480] [2023-04-01 23:58:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:52,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:58:52,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:58:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:52,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:58:52,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-04-01 23:58:52,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:58:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095580480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:58:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-01 23:58:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848433638] [2023-04-01 23:58:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:58:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:58:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:58:52,658 INFO L87 Difference]: Start difference. First operand 67574 states and 90529 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:59:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:59:02,633 INFO L93 Difference]: Finished difference Result 200556 states and 278264 transitions. [2023-04-01 23:59:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 23:59:02,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 340 [2023-04-01 23:59:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:59:03,321 INFO L225 Difference]: With dead ends: 200556 [2023-04-01 23:59:03,321 INFO L226 Difference]: Without dead ends: 132988 [2023-04-01 23:59:03,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:59:03,405 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 7864 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 8274 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7864 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 9173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 8274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:59:03,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7864 Valid, 969 Invalid, 9173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 8274 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-04-01 23:59:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132988 states. [2023-04-01 23:59:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132988 to 118458. [2023-04-01 23:59:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118458 states, 114669 states have (on average 1.160505454830861) internal successors, (133074), 115360 states have internal predecessors, (133074), 476 states have call successors, (476), 476 states have call predecessors, (476), 3312 states have return successors, (23479), 2621 states have call predecessors, (23479), 475 states have call successors, (23479) [2023-04-01 23:59:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118458 states to 118458 states and 157029 transitions. [2023-04-01 23:59:06,297 INFO L78 Accepts]: Start accepts. Automaton has 118458 states and 157029 transitions. Word has length 340 [2023-04-01 23:59:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:59:06,297 INFO L495 AbstractCegarLoop]: Abstraction has 118458 states and 157029 transitions. [2023-04-01 23:59:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:59:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 118458 states and 157029 transitions. [2023-04-01 23:59:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-04-01 23:59:06,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:59:06,312 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:59:06,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:59:06,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:59:06,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:59:06,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:59:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1730630224, now seen corresponding path program 1 times [2023-04-01 23:59:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:59:06,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975043955] [2023-04-01 23:59:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:59:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:59:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:59:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:59:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:59:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 23:59:08,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:59:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975043955] [2023-04-01 23:59:08,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975043955] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:59:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963062688] [2023-04-01 23:59:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:08,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:59:08,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:59:08,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:59:08,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:59:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:08,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:59:08,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:59:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 23:59:08,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:59:08,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963062688] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:59:08,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:59:08,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:59:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248810798] [2023-04-01 23:59:08,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:59:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:59:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:59:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:59:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:59:08,579 INFO L87 Difference]: Start difference. First operand 118458 states and 157029 transitions. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:59:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:59:14,796 INFO L93 Difference]: Finished difference Result 242523 states and 321087 transitions. [2023-04-01 23:59:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:59:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 762 [2023-04-01 23:59:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:59:15,239 INFO L225 Difference]: With dead ends: 242523 [2023-04-01 23:59:15,240 INFO L226 Difference]: Without dead ends: 122611 [2023-04-01 23:59:15,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:59:15,329 INFO L413 NwaCegarLoop]: 2934 mSDtfsCounter, 1575 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 1465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1465 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:59:15,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3152 Invalid, 5137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1465 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:59:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122611 states. [2023-04-01 23:59:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122611 to 119803. [2023-04-01 23:59:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119803 states, 116015 states have (on average 1.1154678274361074) internal successors, (129411), 116703 states have internal predecessors, (129411), 482 states have call successors, (482), 482 states have call predecessors, (482), 3305 states have return successors, (18631), 2617 states have call predecessors, (18631), 481 states have call successors, (18631) [2023-04-01 23:59:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119803 states to 119803 states and 148524 transitions. [2023-04-01 23:59:17,701 INFO L78 Accepts]: Start accepts. Automaton has 119803 states and 148524 transitions. Word has length 762 [2023-04-01 23:59:17,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:59:17,703 INFO L495 AbstractCegarLoop]: Abstraction has 119803 states and 148524 transitions. [2023-04-01 23:59:17,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:59:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 119803 states and 148524 transitions. [2023-04-01 23:59:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-04-01 23:59:17,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:59:17,728 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:59:17,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:59:17,935 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,SelfDestructingSolverStorable6 [2023-04-01 23:59:17,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:59:17,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:59:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1868631354, now seen corresponding path program 1 times [2023-04-01 23:59:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:59:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990691175] [2023-04-01 23:59:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:59:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:59:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:59:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:59:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:59:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:59:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-04-01 23:59:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:59:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990691175] [2023-04-01 23:59:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990691175] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:59:19,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471326245] [2023-04-01 23:59:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:19,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:59:19,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:59:19,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:59:19,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:59:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:19,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:59:19,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:59:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:59:19,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:59:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:59:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471326245] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:59:20,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:59:20,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-04-01 23:59:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591227751] [2023-04-01 23:59:20,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:59:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:59:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:59:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:59:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:59:20,098 INFO L87 Difference]: Start difference. First operand 119803 states and 148524 transitions. Second operand has 12 states, 12 states have (on average 65.16666666666667) internal successors, (782), 10 states have internal predecessors, (782), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 00:00:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:07,294 INFO L93 Difference]: Finished difference Result 676881 states and 950067 transitions. [2023-04-02 00:00:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 00:00:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 65.16666666666667) internal successors, (782), 10 states have internal predecessors, (782), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 856 [2023-04-02 00:00:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:09,867 INFO L225 Difference]: With dead ends: 676881 [2023-04-02 00:00:09,867 INFO L226 Difference]: Without dead ends: 557084 [2023-04-02 00:00:10,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1800 GetRequests, 1751 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=536, Invalid=1914, Unknown=0, NotChecked=0, Total=2450 [2023-04-02 00:00:10,194 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 24905 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 41890 mSolverCounterSat, 12860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24905 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 54750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12860 IncrementalHoareTripleChecker+Valid, 41890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24905 Valid, 1827 Invalid, 54750 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12860 Valid, 41890 Invalid, 0 Unknown, 0 Unchecked, 40.5s Time] [2023-04-02 00:00:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557084 states. [2023-04-02 00:00:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557084 to 538661. [2023-04-02 00:00:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538661 states, 528084 states have (on average 1.1139193764628355) internal successors, (588243), 529639 states have internal predecessors, (588243), 2252 states have call successors, (2252), 2252 states have call predecessors, (2252), 8324 states have return successors, (113381), 6769 states have call predecessors, (113381), 2251 states have call successors, (113381) [2023-04-02 00:00:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538661 states to 538661 states and 703876 transitions. [2023-04-02 00:00:23,996 INFO L78 Accepts]: Start accepts. Automaton has 538661 states and 703876 transitions. Word has length 856 [2023-04-02 00:00:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:23,997 INFO L495 AbstractCegarLoop]: Abstraction has 538661 states and 703876 transitions. [2023-04-02 00:00:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.16666666666667) internal successors, (782), 10 states have internal predecessors, (782), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 00:00:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 538661 states and 703876 transitions. [2023-04-02 00:00:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2023-04-02 00:00:24,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:24,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:24,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 00:00:24,608 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 [2023-04-02 00:00:24,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:24,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1226372161, now seen corresponding path program 1 times [2023-04-02 00:00:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808518963] [2023-04-02 00:00:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:00:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-04-02 00:00:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2023-04-02 00:00:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808518963] [2023-04-02 00:00:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808518963] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278086030] [2023-04-02 00:00:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:26,235 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) [2023-04-02 00:00:26,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 00:00:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:26,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:00:26,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:00:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2023-04-02 00:00:26,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:00:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278086030] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:00:26,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:00:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-02 00:00:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180474300] [2023-04-02 00:00:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:00:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 00:00:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 00:00:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:00:26,716 INFO L87 Difference]: Start difference. First operand 538661 states and 703876 transitions. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 00:00:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:41,286 INFO L93 Difference]: Finished difference Result 1209993 states and 1614052 transitions. [2023-04-02 00:00:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 00:00:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1253 [2023-04-02 00:00:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:46,766 INFO L225 Difference]: With dead ends: 1209993 [2023-04-02 00:00:46,767 INFO L226 Difference]: Without dead ends: 671338 [2023-04-02 00:00:47,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1268 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:00:47,580 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1548 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4746 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 4746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:47,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1343 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 4746 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-02 00:00:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671338 states.