/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:44:33,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:44:33,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:44:33,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:44:33,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:44:33,864 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:44:33,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:44:33,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:44:33,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:44:33,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:44:33,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:44:33,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:44:33,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:44:33,866 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:44:33,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:44:33,867 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:44:33,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:44:33,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:44:33,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:44:33,869 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:44:34,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:44:34,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:44:34,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:44:34,047 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:44:34,050 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:44:34,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2023-04-01 22:44:35,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:44:35,500 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:44:35,500 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2023-04-01 22:44:35,527 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51d5c3fb/ddb0b792c17546d183d1fd9b3547a003/FLAGd06733881 [2023-04-01 22:44:35,539 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51d5c3fb/ddb0b792c17546d183d1fd9b3547a003 [2023-04-01 22:44:35,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:44:35,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:44:35,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:44:35,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:44:35,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:44:35,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:44:35" (1/1) ... [2023-04-01 22:44:35,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1325925c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:35, skipping insertion in model container [2023-04-01 22:44:35,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:44:35" (1/1) ... [2023-04-01 22:44:35,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:44:35,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:44:35,888 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2023-04-01 22:44:36,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:44:36,425 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:44:36,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2023-04-01 22:44:36,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:44:36,912 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:44:36,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36 WrapperNode [2023-04-01 22:44:36,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:44:36,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:44:36,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:44:36,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:44:36,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:36,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:36,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:36,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:44:37,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:44:37,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:44:37,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:44:37,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (1/1) ... [2023-04-01 22:44:37,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:44:37,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:37,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:44:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:44:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:44:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:44:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:44:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:44:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:44:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:44:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:44:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:44:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:44:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:44:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:44:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:44:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:44:37,290 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:44:37,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:44:40,874 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:44:40,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:44:40,885 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:44:40,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:44:40 BoogieIcfgContainer [2023-04-01 22:44:40,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:44:40,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:44:40,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:44:40,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:44:40,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:44:35" (1/3) ... [2023-04-01 22:44:40,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:44:40, skipping insertion in model container [2023-04-01 22:44:40,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:44:36" (2/3) ... [2023-04-01 22:44:40,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:44:40, skipping insertion in model container [2023-04-01 22:44:40,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:44:40" (3/3) ... [2023-04-01 22:44:40,892 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37.c [2023-04-01 22:44:40,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:44:40,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:44:40,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:44:40,989 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;@30f1a1f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:44:40,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:44:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:44:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-01 22:44:41,000 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:41,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:41,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:41,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1566755223, now seen corresponding path program 1 times [2023-04-01 22:44:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:41,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859874147] [2023-04-01 22:44:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:41,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:41,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859874147] [2023-04-01 22:44:41,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859874147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:41,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:41,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:44:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525870908] [2023-04-01 22:44:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:41,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:44:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:44:41,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:44:41,379 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:44:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:46,481 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2023-04-01 22:44:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:44:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 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 60 [2023-04-01 22:44:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:46,529 INFO L225 Difference]: With dead ends: 3204 [2023-04-01 22:44:46,529 INFO L226 Difference]: Without dead ends: 2006 [2023-04-01 22:44:46,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:46,562 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 2865 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:46,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 304 Invalid, 5070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:44:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2023-04-01 22:44:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2023-04-01 22:44:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1896 states have (on average 1.729957805907173) internal successors, (3280), 1897 states have internal predecessors, (3280), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:44:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2023-04-01 22:44:46,756 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 60 [2023-04-01 22:44:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2023-04-01 22:44:46,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:44:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2023-04-01 22:44:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-01 22:44:46,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:46,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:46,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:44:46,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:46,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1307943351, now seen corresponding path program 1 times [2023-04-01 22:44:46,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:46,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582090652] [2023-04-01 22:44:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:47,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:47,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582090652] [2023-04-01 22:44:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582090652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:47,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:44:47,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563325417] [2023-04-01 22:44:47,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:47,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:44:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:44:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:44:47,349 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:44:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:55,196 INFO L93 Difference]: Finished difference Result 7220 states and 12706 transitions. [2023-04-01 22:44:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:44:55,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 129 [2023-04-01 22:44:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:55,212 INFO L225 Difference]: With dead ends: 7220 [2023-04-01 22:44:55,212 INFO L226 Difference]: Without dead ends: 5306 [2023-04-01 22:44:55,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:44:55,217 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 5957 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 8451 mSolverCounterSat, 1797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5957 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 10248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Valid, 8451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:55,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5957 Valid, 812 Invalid, 10248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1797 Valid, 8451 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 22:44:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2023-04-01 22:44:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 5282. [2023-04-01 22:44:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5181 states have (on average 1.4589847519783825) internal successors, (7559), 5195 states have internal predecessors, (7559), 26 states have call successors, (26), 26 states have call predecessors, (26), 74 states have return successors, (219), 60 states have call predecessors, (219), 25 states have call successors, (219) [2023-04-01 22:44:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7804 transitions. [2023-04-01 22:44:55,305 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7804 transitions. Word has length 129 [2023-04-01 22:44:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:55,306 INFO L495 AbstractCegarLoop]: Abstraction has 5282 states and 7804 transitions. [2023-04-01 22:44:55,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:44:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7804 transitions. [2023-04-01 22:44:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 22:44:55,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:55,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:44:55,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:55,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1060093029, now seen corresponding path program 1 times [2023-04-01 22:44:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823197127] [2023-04-01 22:44:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823197127] [2023-04-01 22:44:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823197127] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:55,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:44:55,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:44:55,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999560480] [2023-04-01 22:44:55,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:55,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:44:55,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:44:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:44:55,567 INFO L87 Difference]: Start difference. First operand 5282 states and 7804 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:01,230 INFO L93 Difference]: Finished difference Result 15887 states and 24277 transitions. [2023-04-01 22:45:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:45:01,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 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 131 [2023-04-01 22:45:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:01,263 INFO L225 Difference]: With dead ends: 15887 [2023-04-01 22:45:01,263 INFO L226 Difference]: Without dead ends: 10611 [2023-04-01 22:45:01,273 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 22:45:01,274 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 4877 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 7047 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 8036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 7047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:01,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4877 Valid, 808 Invalid, 8036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 7047 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 22:45:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10611 states. [2023-04-01 22:45:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10611 to 10441. [2023-04-01 22:45:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10441 states, 10176 states have (on average 1.3250786163522013) internal successors, (13484), 10229 states have internal predecessors, (13484), 50 states have call successors, (50), 50 states have call predecessors, (50), 214 states have return successors, (901), 161 states have call predecessors, (901), 49 states have call successors, (901) [2023-04-01 22:45:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10441 states to 10441 states and 14435 transitions. [2023-04-01 22:45:01,456 INFO L78 Accepts]: Start accepts. Automaton has 10441 states and 14435 transitions. Word has length 131 [2023-04-01 22:45:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 10441 states and 14435 transitions. [2023-04-01 22:45:01,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10441 states and 14435 transitions. [2023-04-01 22:45:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-01 22:45:01,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:01,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:45:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:45:01,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:01,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 162411769, now seen corresponding path program 1 times [2023-04-01 22:45:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:01,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224192516] [2023-04-01 22:45:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:01,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224192516] [2023-04-01 22:45:01,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224192516] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:01,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:45:01,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045239076] [2023-04-01 22:45:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:01,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:45:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:45:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:45:01,781 INFO L87 Difference]: Start difference. First operand 10441 states and 14435 transitions. Second operand has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:10,073 INFO L93 Difference]: Finished difference Result 39747 states and 59289 transitions. [2023-04-01 22:45:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:45:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 137 [2023-04-01 22:45:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:10,251 INFO L225 Difference]: With dead ends: 39747 [2023-04-01 22:45:10,251 INFO L226 Difference]: Without dead ends: 29312 [2023-04-01 22:45:10,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:45:10,312 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 4902 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 8902 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 11032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 8902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:10,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4902 Valid, 766 Invalid, 11032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2130 Valid, 8902 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-01 22:45:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29312 states. [2023-04-01 22:45:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29312 to 28383. [2023-04-01 22:45:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28383 states, 27541 states have (on average 1.241639737119204) internal successors, (34196), 27755 states have internal predecessors, (34196), 134 states have call successors, (134), 134 states have call predecessors, (134), 707 states have return successors, (5503), 493 states have call predecessors, (5503), 133 states have call successors, (5503) [2023-04-01 22:45:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28383 states to 28383 states and 39833 transitions. [2023-04-01 22:45:11,270 INFO L78 Accepts]: Start accepts. Automaton has 28383 states and 39833 transitions. Word has length 137 [2023-04-01 22:45:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:11,271 INFO L495 AbstractCegarLoop]: Abstraction has 28383 states and 39833 transitions. [2023-04-01 22:45:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 28383 states and 39833 transitions. [2023-04-01 22:45:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-01 22:45:11,274 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:11,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:45:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:45:11,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:11,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1001124327, now seen corresponding path program 1 times [2023-04-01 22:45:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482591153] [2023-04-01 22:45:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482591153] [2023-04-01 22:45:11,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482591153] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807365117] [2023-04-01 22:45:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:11,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:11,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:45:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:11,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:45:11,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:45:11,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:45:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807365117] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:12,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:45:12,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-04-01 22:45:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121905371] [2023-04-01 22:45:12,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:12,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:45:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:45:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:45:12,104 INFO L87 Difference]: Start difference. First operand 28383 states and 39833 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:15,916 INFO L93 Difference]: Finished difference Result 74088 states and 107010 transitions. [2023-04-01 22:45:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 22:45:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 153 [2023-04-01 22:45:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:16,042 INFO L225 Difference]: With dead ends: 74088 [2023-04-01 22:45:16,042 INFO L226 Difference]: Without dead ends: 45711 [2023-04-01 22:45:16,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:45:16,094 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2899 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2962 mSolverCounterSat, 1309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 4271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1309 IncrementalHoareTripleChecker+Valid, 2962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:16,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2899 Valid, 360 Invalid, 4271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1309 Valid, 2962 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:45:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45711 states. [2023-04-01 22:45:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45711 to 40022. [2023-04-01 22:45:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40022 states, 38917 states have (on average 1.2337795821877329) internal successors, (48015), 39188 states have internal predecessors, (48015), 190 states have call successors, (190), 190 states have call predecessors, (190), 914 states have return successors, (9103), 643 states have call predecessors, (9103), 189 states have call successors, (9103) [2023-04-01 22:45:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40022 states to 40022 states and 57308 transitions. [2023-04-01 22:45:17,465 INFO L78 Accepts]: Start accepts. Automaton has 40022 states and 57308 transitions. Word has length 153 [2023-04-01 22:45:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:17,466 INFO L495 AbstractCegarLoop]: Abstraction has 40022 states and 57308 transitions. [2023-04-01 22:45:17,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:45:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 40022 states and 57308 transitions. [2023-04-01 22:45:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-01 22:45:17,467 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:17,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:45:17,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:45:17,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:17,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:17,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash -578454287, now seen corresponding path program 1 times [2023-04-01 22:45:17,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:17,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410019127] [2023-04-01 22:45:17,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:17,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:18,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:18,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410019127] [2023-04-01 22:45:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410019127] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:18,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292634852] [2023-04-01 22:45:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:18,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:18,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:18,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:45:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:18,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:18,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:18,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292634852] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:18,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:45:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693532389] [2023-04-01 22:45:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:18,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:45:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:45:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:45:18,180 INFO L87 Difference]: Start difference. First operand 40022 states and 57308 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:45:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:21,863 INFO L93 Difference]: Finished difference Result 80842 states and 115628 transitions. [2023-04-01 22:45:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:45:21,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 180 [2023-04-01 22:45:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:21,943 INFO L225 Difference]: With dead ends: 80842 [2023-04-01 22:45:21,944 INFO L226 Difference]: Without dead ends: 40826 [2023-04-01 22:45:21,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:45:21,996 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 1171 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:21,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1506 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 22:45:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40826 states. [2023-04-01 22:45:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40826 to 37605. [2023-04-01 22:45:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37605 states, 36527 states have (on average 1.163166972376598) internal successors, (42487), 36797 states have internal predecessors, (42487), 178 states have call successors, (178), 178 states have call predecessors, (178), 899 states have return successors, (6040), 629 states have call predecessors, (6040), 177 states have call successors, (6040) [2023-04-01 22:45:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 48705 transitions. [2023-04-01 22:45:22,694 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 48705 transitions. Word has length 180 [2023-04-01 22:45:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:22,694 INFO L495 AbstractCegarLoop]: Abstraction has 37605 states and 48705 transitions. [2023-04-01 22:45:22,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:45:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 48705 transitions. [2023-04-01 22:45:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-04-01 22:45:22,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:22,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:45:22,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:45:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:45:22,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:22,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -641651519, now seen corresponding path program 1 times [2023-04-01 22:45:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489870905] [2023-04-01 22:45:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:45:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:45:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489870905] [2023-04-01 22:45:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489870905] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477518912] [2023-04-01 22:45:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:23,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:23,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:23,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:23,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:45:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:23,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:23,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:23,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:45:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477518912] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:23,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:23,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:45:23,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554235842] [2023-04-01 22:45:23,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:45:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:45:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:45:23,689 INFO L87 Difference]: Start difference. First operand 37605 states and 48705 transitions. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 9 states have internal predecessors, (376), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:45:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:30,582 INFO L93 Difference]: Finished difference Result 107219 states and 148260 transitions. [2023-04-01 22:45:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:45:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 9 states have internal predecessors, (376), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 249 [2023-04-01 22:45:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:30,768 INFO L225 Difference]: With dead ends: 107219 [2023-04-01 22:45:30,768 INFO L226 Difference]: Without dead ends: 69620 [2023-04-01 22:45:30,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 499 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:45:30,823 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 4623 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 8776 mSolverCounterSat, 1173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 9949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1173 IncrementalHoareTripleChecker+Valid, 8776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:30,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 780 Invalid, 9949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1173 Valid, 8776 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 22:45:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69620 states. [2023-04-01 22:45:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69620 to 69272. [2023-04-01 22:45:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69272 states, 67176 states have (on average 1.1325919971418363) internal successors, (76083), 67763 states have internal predecessors, (76083), 326 states have call successors, (326), 326 states have call predecessors, (326), 1769 states have return successors, (13125), 1182 states have call predecessors, (13125), 325 states have call successors, (13125) [2023-04-01 22:45:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69272 states to 69272 states and 89534 transitions. [2023-04-01 22:45:32,041 INFO L78 Accepts]: Start accepts. Automaton has 69272 states and 89534 transitions. Word has length 249 [2023-04-01 22:45:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:32,041 INFO L495 AbstractCegarLoop]: Abstraction has 69272 states and 89534 transitions. [2023-04-01 22:45:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 9 states have internal predecessors, (376), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:45:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 69272 states and 89534 transitions. [2023-04-01 22:45:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-04-01 22:45:32,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:32,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:45:32,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 22:45:32,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:32,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:32,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1117872567, now seen corresponding path program 1 times [2023-04-01 22:45:32,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:32,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710030039] [2023-04-01 22:45:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:32,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:45:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-01 22:45:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:32,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710030039] [2023-04-01 22:45:32,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710030039] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:32,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:45:32,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:45:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739885247] [2023-04-01 22:45:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:32,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:45:32,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:45:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:45:32,836 INFO L87 Difference]: Start difference. First operand 69272 states and 89534 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:45:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:38,402 INFO L93 Difference]: Finished difference Result 138518 states and 179218 transitions. [2023-04-01 22:45:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:45:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 326 [2023-04-01 22:45:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:38,572 INFO L225 Difference]: With dead ends: 138518 [2023-04-01 22:45:38,572 INFO L226 Difference]: Without dead ends: 69252 [2023-04-01 22:45:38,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:45:38,626 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 3921 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 5489 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 5798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 5489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:38,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 388 Invalid, 5798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 5489 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:45:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69252 states. [2023-04-01 22:45:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69252 to 69216. [2023-04-01 22:45:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69216 states, 67136 states have (on average 1.1209932078169687) internal successors, (75259), 67715 states have internal predecessors, (75259), 326 states have call successors, (326), 326 states have call predecessors, (326), 1753 states have return successors, (11648), 1174 states have call predecessors, (11648), 325 states have call successors, (11648) [2023-04-01 22:45:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69216 states to 69216 states and 87233 transitions. [2023-04-01 22:45:39,810 INFO L78 Accepts]: Start accepts. Automaton has 69216 states and 87233 transitions. Word has length 326 [2023-04-01 22:45:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:39,811 INFO L495 AbstractCegarLoop]: Abstraction has 69216 states and 87233 transitions. [2023-04-01 22:45:39,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:45:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 69216 states and 87233 transitions. [2023-04-01 22:45:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-04-01 22:45:39,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:39,821 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:45:39,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 22:45:39,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:39,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 865841433, now seen corresponding path program 1 times [2023-04-01 22:45:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:39,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744909111] [2023-04-01 22:45:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:39,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:45:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:45:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 164 proven. 215 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:45:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744909111] [2023-04-01 22:45:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744909111] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208887984] [2023-04-01 22:45:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:40,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:40,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:40,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:45:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:40,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:40,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-04-01 22:45:41,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208887984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:41,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 22:45:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206777282] [2023-04-01 22:45:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:41,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:45:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:45:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:41,028 INFO L87 Difference]: Start difference. First operand 69216 states and 87233 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:45:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:44,722 INFO L93 Difference]: Finished difference Result 161336 states and 207868 transitions. [2023-04-01 22:45:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:45:44,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 338 [2023-04-01 22:45:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:45,078 INFO L225 Difference]: With dead ends: 161336 [2023-04-01 22:45:45,078 INFO L226 Difference]: Without dead ends: 92126 [2023-04-01 22:45:45,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:45,132 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 968 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:45,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 821 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 22:45:45,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92126 states. [2023-04-01 22:45:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92126 to 85648. [2023-04-01 22:45:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85648 states, 83260 states have (on average 1.099243334134038) internal successors, (91523), 83910 states have internal predecessors, (91523), 406 states have call successors, (406), 406 states have call predecessors, (406), 1981 states have return successors, (13612), 1331 states have call predecessors, (13612), 405 states have call successors, (13612) [2023-04-01 22:45:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85648 states to 85648 states and 105541 transitions. [2023-04-01 22:45:46,562 INFO L78 Accepts]: Start accepts. Automaton has 85648 states and 105541 transitions. Word has length 338 [2023-04-01 22:45:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:46,563 INFO L495 AbstractCegarLoop]: Abstraction has 85648 states and 105541 transitions. [2023-04-01 22:45:46,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:45:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 85648 states and 105541 transitions. [2023-04-01 22:45:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-04-01 22:45:46,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:46,581 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:45:46,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:45:46,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:46,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:46,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:46,786 INFO L85 PathProgramCache]: Analyzing trace with hash -871994582, now seen corresponding path program 1 times [2023-04-01 22:45:46,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:46,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853799624] [2023-04-01 22:45:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:46,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:45:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:45:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 164 proven. 284 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:45:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853799624] [2023-04-01 22:45:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853799624] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872184459] [2023-04-01 22:45:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:47,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:47,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:45:47,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:45:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:47,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:47,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:45:48,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:45:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872184459] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:48,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 22:45:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83178970] [2023-04-01 22:45:48,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:45:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:45:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:45:48,661 INFO L87 Difference]: Start difference. First operand 85648 states and 105541 transitions. Second operand has 16 states, 16 states have (on average 45.0625) internal successors, (721), 14 states have internal predecessors, (721), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:46:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:11,561 INFO L93 Difference]: Finished difference Result 215869 states and 267650 transitions. [2023-04-01 22:46:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-04-01 22:46:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 45.0625) internal successors, (721), 14 states have internal predecessors, (721), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 421 [2023-04-01 22:46:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:11,966 INFO L225 Difference]: With dead ends: 215869 [2023-04-01 22:46:11,966 INFO L226 Difference]: Without dead ends: 126117 [2023-04-01 22:46:12,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 968 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9936 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2392, Invalid=22414, Unknown=0, NotChecked=0, Total=24806 [2023-04-01 22:46:12,044 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 26993 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 32454 mSolverCounterSat, 6606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26993 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 39060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6606 IncrementalHoareTripleChecker+Valid, 32454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:12,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26993 Valid, 2403 Invalid, 39060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6606 Valid, 32454 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2023-04-01 22:46:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126117 states. [2023-04-01 22:46:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126117 to 123316. [2023-04-01 22:46:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123316 states, 120530 states have (on average 1.0472164606322079) internal successors, (126221), 121217 states have internal predecessors, (126221), 609 states have call successors, (609), 594 states have call predecessors, (609), 2176 states have return successors, (10537), 1504 states have call predecessors, (10537), 608 states have call successors, (10537) [2023-04-01 22:46:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123316 states to 123316 states and 137367 transitions. [2023-04-01 22:46:13,855 INFO L78 Accepts]: Start accepts. Automaton has 123316 states and 137367 transitions. Word has length 421 [2023-04-01 22:46:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:13,855 INFO L495 AbstractCegarLoop]: Abstraction has 123316 states and 137367 transitions. [2023-04-01 22:46:13,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 45.0625) internal successors, (721), 14 states have internal predecessors, (721), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:46:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 123316 states and 137367 transitions. [2023-04-01 22:46:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2023-04-01 22:46:13,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:13,879 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:46:13,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 22:46:14,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 22:46:14,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:14,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:14,091 INFO L85 PathProgramCache]: Analyzing trace with hash -301114724, now seen corresponding path program 1 times [2023-04-01 22:46:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:14,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213638909] [2023-04-01 22:46:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:14,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:46:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:46:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 253 proven. 132 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 22:46:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213638909] [2023-04-01 22:46:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213638909] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893766562] [2023-04-01 22:46:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:14,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:14,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:46:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:15,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:46:15,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-04-01 22:46:15,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:46:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893766562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:46:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:46:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 22:46:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23114024] [2023-04-01 22:46:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:46:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:46:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:46:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:46:15,322 INFO L87 Difference]: Start difference. First operand 123316 states and 137367 transitions. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:46:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:20,022 INFO L93 Difference]: Finished difference Result 253428 states and 282303 transitions. [2023-04-01 22:46:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:46:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 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 562 [2023-04-01 22:46:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:20,358 INFO L225 Difference]: With dead ends: 253428 [2023-04-01 22:46:20,358 INFO L226 Difference]: Without dead ends: 130122 [2023-04-01 22:46:20,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:46:20,459 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 2645 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 4917 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 4917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:20,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 544 Invalid, 5772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 4917 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:46:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130122 states. [2023-04-01 22:46:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130122 to 129181. [2023-04-01 22:46:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129181 states, 126243 states have (on average 1.0454441038314997) internal successors, (131980), 126978 states have internal predecessors, (131980), 637 states have call successors, (637), 622 states have call predecessors, (637), 2300 states have return successors, (10939), 1580 states have call predecessors, (10939), 636 states have call successors, (10939) [2023-04-01 22:46:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129181 states to 129181 states and 143556 transitions. [2023-04-01 22:46:22,293 INFO L78 Accepts]: Start accepts. Automaton has 129181 states and 143556 transitions. Word has length 562 [2023-04-01 22:46:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:22,293 INFO L495 AbstractCegarLoop]: Abstraction has 129181 states and 143556 transitions. [2023-04-01 22:46:22,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:46:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 129181 states and 143556 transitions. [2023-04-01 22:46:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-04-01 22:46:22,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:22,501 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, 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, 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] [2023-04-01 22:46:22,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:46:22,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:22,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:22,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash -708492104, now seen corresponding path program 1 times [2023-04-01 22:46:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:22,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844727740] [2023-04-01 22:46:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:22,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:46:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 22:46:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 278 proven. 239 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:46:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844727740] [2023-04-01 22:46:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844727740] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257421813] [2023-04-01 22:46:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:23,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:23,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:23,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:46:23,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:46:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:24,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:46:24,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-04-01 22:46:25,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 164 proven. 356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:46:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257421813] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:28,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 22:46:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35991581] [2023-04-01 22:46:28,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:46:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:46:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:46:28,156 INFO L87 Difference]: Start difference. First operand 129181 states and 143556 transitions. Second operand has 25 states, 25 states have (on average 57.36) internal successors, (1434), 23 states have internal predecessors, (1434), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 22:47:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:14,801 INFO L93 Difference]: Finished difference Result 373909 states and 428468 transitions. [2023-04-01 22:47:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2023-04-01 22:47:14,801 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 57.36) internal successors, (1434), 23 states have internal predecessors, (1434), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 659 [2023-04-01 22:47:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:15,626 INFO L225 Difference]: With dead ends: 373909 [2023-04-01 22:47:15,626 INFO L226 Difference]: Without dead ends: 239291 [2023-04-01 22:47:15,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1743 GetRequests, 1494 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28001 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=8513, Invalid=54237, Unknown=0, NotChecked=0, Total=62750 [2023-04-01 22:47:15,833 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 52555 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 61175 mSolverCounterSat, 11370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52569 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 72545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11370 IncrementalHoareTripleChecker+Valid, 61175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:15,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52569 Valid, 3644 Invalid, 72545 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11370 Valid, 61175 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2023-04-01 22:47:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239291 states. [2023-04-01 22:47:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239291 to 222252. [2023-04-01 22:47:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222252 states, 218119 states have (on average 1.0433158046754294) internal successors, (227567), 219004 states have internal predecessors, (227567), 1100 states have call successors, (1100), 1082 states have call predecessors, (1100), 3032 states have return successors, (19649), 2165 states have call predecessors, (19649), 1099 states have call successors, (19649) [2023-04-01 22:47:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222252 states to 222252 states and 248316 transitions. [2023-04-01 22:47:19,950 INFO L78 Accepts]: Start accepts. Automaton has 222252 states and 248316 transitions. Word has length 659 [2023-04-01 22:47:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:19,951 INFO L495 AbstractCegarLoop]: Abstraction has 222252 states and 248316 transitions. [2023-04-01 22:47:19,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 57.36) internal successors, (1434), 23 states have internal predecessors, (1434), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 22:47:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 222252 states and 248316 transitions. [2023-04-01 22:47:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-04-01 22:47:19,992 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:47:19,994 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:47:19,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:47:20,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:20,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:47:20,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:47:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1057211432, now seen corresponding path program 1 times [2023-04-01 22:47:20,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:47:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874966660] [2023-04-01 22:47:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:47:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:47:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:47:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:47:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:47:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-04-01 22:47:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 484 proven. 63 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-04-01 22:47:22,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:47:22,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874966660] [2023-04-01 22:47:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874966660] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:47:22,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827625447] [2023-04-01 22:47:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:47:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:22,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:47:22,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:47:22,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:47:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:47:22,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:47:22,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:47:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 581 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-04-01 22:47:22,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:47:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 221 proven. 462 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-04-01 22:47:23,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827625447] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:47:23,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:47:23,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-04-01 22:47:23,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282738133] [2023-04-01 22:47:23,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:47:23,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 22:47:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:47:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 22:47:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:47:23,708 INFO L87 Difference]: Start difference. First operand 222252 states and 248316 transitions. Second operand has 23 states, 23 states have (on average 55.26086956521739) internal successors, (1271), 21 states have internal predecessors, (1271), 10 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-04-01 22:48:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:48:16,763 INFO L93 Difference]: Finished difference Result 692832 states and 782425 transitions. [2023-04-01 22:48:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2023-04-01 22:48:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 55.26086956521739) internal successors, (1271), 21 states have internal predecessors, (1271), 10 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 662 [2023-04-01 22:48:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:48:18,001 INFO L225 Difference]: With dead ends: 692832 [2023-04-01 22:48:18,001 INFO L226 Difference]: Without dead ends: 470590 [2023-04-01 22:48:18,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1899 GetRequests, 1590 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42750 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11709, Invalid=84081, Unknown=0, NotChecked=0, Total=95790 [2023-04-01 22:48:18,268 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 68440 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 65458 mSolverCounterSat, 13566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68440 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 79024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13566 IncrementalHoareTripleChecker+Valid, 65458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:48:18,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68440 Valid, 3299 Invalid, 79024 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13566 Valid, 65458 Invalid, 0 Unknown, 0 Unchecked, 38.6s Time] [2023-04-01 22:48:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470590 states. [2023-04-01 22:48:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470590 to 412418. [2023-04-01 22:48:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412418 states, 405568 states have (on average 1.039162359949503) internal successors, (421451), 406846 states have internal predecessors, (421451), 2041 states have call successors, (2041), 2018 states have call predecessors, (2041), 4808 states have return successors, (35681), 3553 states have call predecessors, (35681), 2040 states have call successors, (35681) [2023-04-01 22:48:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412418 states to 412418 states and 459173 transitions. [2023-04-01 22:48:26,085 INFO L78 Accepts]: Start accepts. Automaton has 412418 states and 459173 transitions. Word has length 662 [2023-04-01 22:48:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:48:26,086 INFO L495 AbstractCegarLoop]: Abstraction has 412418 states and 459173 transitions. [2023-04-01 22:48:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.26086956521739) internal successors, (1271), 21 states have internal predecessors, (1271), 10 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-04-01 22:48:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 412418 states and 459173 transitions. [2023-04-01 22:48:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2023-04-01 22:48:26,246 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:48:26,246 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:48:26,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:48:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:48:26,456 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:48:26,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:48:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash 530336881, now seen corresponding path program 1 times [2023-04-01 22:48:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:48:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199169317] [2023-04-01 22:48:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:48:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:48:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:48:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:48:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:48:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2023-04-01 22:48:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-04-01 22:48:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2023-04-01 22:48:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-04-01 22:48:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1012 [2023-04-01 22:48:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 605 proven. 368 refuted. 0 times theorem prover too weak. 1593 trivial. 0 not checked. [2023-04-01 22:48:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:48:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199169317] [2023-04-01 22:48:28,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199169317] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:48:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897642518] [2023-04-01 22:48:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:48:28,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:48:28,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:48:28,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:48:28,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:48:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:48:28,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:48:28,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:48:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 1756 proven. 2 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2023-04-01 22:48:28,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:48:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 618 proven. 203 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2023-04-01 22:48:29,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897642518] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:48:29,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:48:29,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:48:29,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966109648] [2023-04-01 22:48:29,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:48:29,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:48:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:48:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:48:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:48:29,557 INFO L87 Difference]: Start difference. First operand 412418 states and 459173 transitions. Second operand has 12 states, 12 states have (on average 71.5) internal successors, (858), 10 states have internal predecessors, (858), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12)