/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:34:48,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:34:48,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:34:48,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:34:48,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:34:48,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:34:48,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:34:48,224 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 22:34:48,243 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:34:48,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:34:48,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:34:48,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:34:48,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:34:48,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:34:48,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:34:48,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:34:48,245 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:34:48,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:34:48,246 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:34:48,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:34:48,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:34:48,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:34:48,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:34:48,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:34:48,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:34:48,247 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:34:48,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:34:48,247 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:34:48,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:34:48,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:34:48,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:34:48,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:34:48,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:34:48,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:34:48,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:34:48,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:34:48,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:34:48,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:34:48,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:34:48,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:34:48,250 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:34:48,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:34:48,250 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:34:48,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:34:48,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:34:48,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:34:48,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:34:48,460 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:34:48,460 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:34:48,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label00.c [2023-04-01 22:34:49,651 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:34:50,070 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:34:50,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label00.c [2023-04-01 22:34:50,110 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ddf2529/8a90ca8c280f4603ae6e0964ee70bf0d/FLAG779c9d462 [2023-04-01 22:34:50,126 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ddf2529/8a90ca8c280f4603ae6e0964ee70bf0d [2023-04-01 22:34:50,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:34:50,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:34:50,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:34:50,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:34:50,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:34:50,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:34:50" (1/1) ... [2023-04-01 22:34:50,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30209182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:50, skipping insertion in model container [2023-04-01 22:34:50,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:34:50" (1/1) ... [2023-04-01 22:34:50,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:34:50,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:34:50,533 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_label00.c[5434,5447] [2023-04-01 22:34:51,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:34:51,268 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:34:51,298 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_label00.c[5434,5447] [2023-04-01 22:34:51,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:34:51,735 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:34:51,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51 WrapperNode [2023-04-01 22:34:51,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:34:51,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:34:51,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:34:51,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:34:51,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:51,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:52,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:52,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:34:52,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:34:52,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:34:52,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:34:52,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (1/1) ... [2023-04-01 22:34:52,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:34:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:52,075 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 22:34:52,098 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 22:34:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:34:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:34:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:34:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:34:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:34:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:34:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:34:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:34:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:34:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:34:52,187 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:34:52,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:34:56,951 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:34:56,966 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:34:56,966 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:34:56,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:34:56 BoogieIcfgContainer [2023-04-01 22:34:56,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:34:56,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:34:56,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:34:56,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:34:56,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:34:50" (1/3) ... [2023-04-01 22:34:56,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729b0fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:34:56, skipping insertion in model container [2023-04-01 22:34:56,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:34:51" (2/3) ... [2023-04-01 22:34:56,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729b0fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:34:56, skipping insertion in model container [2023-04-01 22:34:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:34:56" (3/3) ... [2023-04-01 22:34:56,977 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2023-04-01 22:34:56,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:34:56,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:34:57,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:34:57,058 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;@74f84ed9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:34:57,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:34:57,066 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 22:34:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 22:34:57,074 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:57,075 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] [2023-04-01 22:34:57,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:57,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1578534516, now seen corresponding path program 1 times [2023-04-01 22:34:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:57,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606420819] [2023-04-01 22:34:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:57,650 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 22:34:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606420819] [2023-04-01 22:34:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606420819] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:34:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:34:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172705819] [2023-04-01 22:34:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:34:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:34:57,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:34:57,699 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 22:35:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:03,929 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2023-04-01 22:35:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:35:03,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 43 [2023-04-01 22:35:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:03,955 INFO L225 Difference]: With dead ends: 3230 [2023-04-01 22:35:03,955 INFO L226 Difference]: Without dead ends: 2026 [2023-04-01 22:35:03,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:35:03,970 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 3022 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3022 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:03,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3022 Valid, 300 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:35:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-04-01 22:35:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2023-04-01 22:35:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1981 states have (on average 1.6436143361938416) internal successors, (3256), 1983 states have internal predecessors, (3256), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-01 22:35:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2023-04-01 22:35:04,105 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 43 [2023-04-01 22:35:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:04,105 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2023-04-01 22:35:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 22:35:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2023-04-01 22:35:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-01 22:35:04,109 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:04,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:35:04,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:04,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1302785569, now seen corresponding path program 1 times [2023-04-01 22:35:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418289159] [2023-04-01 22:35:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:04,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418289159] [2023-04-01 22:35:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418289159] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:04,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:35:04,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:35:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649625038] [2023-04-01 22:35:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:04,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:35:04,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:35:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:35:04,504 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 22:35:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:12,084 INFO L93 Difference]: Finished difference Result 5861 states and 9699 transitions. [2023-04-01 22:35:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:35:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 118 [2023-04-01 22:35:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:12,101 INFO L225 Difference]: With dead ends: 5861 [2023-04-01 22:35:12,102 INFO L226 Difference]: Without dead ends: 3858 [2023-04-01 22:35:12,110 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 22:35:12,114 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3295 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 7735 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 8921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 7735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:12,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3295 Valid, 815 Invalid, 8921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 7735 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-04-01 22:35:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2023-04-01 22:35:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3760. [2023-04-01 22:35:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3688 states have (on average 1.4899674620390455) internal successors, (5495), 3700 states have internal predecessors, (5495), 18 states have call successors, (18), 18 states have call predecessors, (18), 53 states have return successors, (117), 41 states have call predecessors, (117), 17 states have call successors, (117) [2023-04-01 22:35:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5630 transitions. [2023-04-01 22:35:12,233 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5630 transitions. Word has length 118 [2023-04-01 22:35:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:12,235 INFO L495 AbstractCegarLoop]: Abstraction has 3760 states and 5630 transitions. [2023-04-01 22:35:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 22:35:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5630 transitions. [2023-04-01 22:35:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-01 22:35:12,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:12,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:35:12,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:12,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1957838723, now seen corresponding path program 1 times [2023-04-01 22:35:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:12,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961521671] [2023-04-01 22:35:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961521671] [2023-04-01 22:35:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961521671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:35:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:35:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680199801] [2023-04-01 22:35:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:35:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:35:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:35:12,705 INFO L87 Difference]: Start difference. First operand 3760 states and 5630 transitions. Second operand has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 22:35:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:20,691 INFO L93 Difference]: Finished difference Result 14591 states and 22901 transitions. [2023-04-01 22:35:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:35:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 132 [2023-04-01 22:35:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:20,744 INFO L225 Difference]: With dead ends: 14591 [2023-04-01 22:35:20,745 INFO L226 Difference]: Without dead ends: 10837 [2023-04-01 22:35:20,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:35:20,758 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 7572 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 7904 mSolverCounterSat, 1988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7572 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 9892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1988 IncrementalHoareTripleChecker+Valid, 7904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:20,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7572 Valid, 955 Invalid, 9892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1988 Valid, 7904 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 22:35:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2023-04-01 22:35:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 10751. [2023-04-01 22:35:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10420 states have (on average 1.3435700575815739) internal successors, (14000), 10488 states have internal predecessors, (14000), 50 states have call successors, (50), 50 states have call predecessors, (50), 280 states have return successors, (1257), 212 states have call predecessors, (1257), 49 states have call successors, (1257) [2023-04-01 22:35:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 15307 transitions. [2023-04-01 22:35:21,159 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 15307 transitions. Word has length 132 [2023-04-01 22:35:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:21,161 INFO L495 AbstractCegarLoop]: Abstraction has 10751 states and 15307 transitions. [2023-04-01 22:35:21,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 22:35:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 15307 transitions. [2023-04-01 22:35:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 22:35:21,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:21,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:21,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:35:21,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:21,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash -465796832, now seen corresponding path program 1 times [2023-04-01 22:35:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601579784] [2023-04-01 22:35:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601579784] [2023-04-01 22:35:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601579784] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:21,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:35:21,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:35:21,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596989858] [2023-04-01 22:35:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:21,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:35:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:35:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:35:21,540 INFO L87 Difference]: Start difference. First operand 10751 states and 15307 transitions. Second operand has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 5 states have internal predecessors, (155), 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 22:35:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:29,038 INFO L93 Difference]: Finished difference Result 39561 states and 60683 transitions. [2023-04-01 22:35:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:35:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 5 states have internal predecessors, (155), 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 161 [2023-04-01 22:35:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:29,170 INFO L225 Difference]: With dead ends: 39561 [2023-04-01 22:35:29,171 INFO L226 Difference]: Without dead ends: 28816 [2023-04-01 22:35:29,214 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 22:35:29,221 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 6987 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 6957 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6987 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 9151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 6957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:29,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6987 Valid, 673 Invalid, 9151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 6957 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 22:35:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28816 states. [2023-04-01 22:35:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28816 to 28710. [2023-04-01 22:35:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28710 states, 27783 states have (on average 1.2118561710398446) internal successors, (33669), 28013 states have internal predecessors, (33669), 134 states have call successors, (134), 134 states have call predecessors, (134), 792 states have return successors, (5011), 562 states have call predecessors, (5011), 133 states have call successors, (5011) [2023-04-01 22:35:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 38814 transitions. [2023-04-01 22:35:30,064 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 38814 transitions. Word has length 161 [2023-04-01 22:35:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:30,065 INFO L495 AbstractCegarLoop]: Abstraction has 28710 states and 38814 transitions. [2023-04-01 22:35:30,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 5 states have internal predecessors, (155), 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 22:35:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 38814 transitions. [2023-04-01 22:35:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-01 22:35:30,068 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:30,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:30,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:35:30,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:30,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash 568296596, now seen corresponding path program 1 times [2023-04-01 22:35:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:30,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532389821] [2023-04-01 22:35:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:30,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532389821] [2023-04-01 22:35:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532389821] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661955023] [2023-04-01 22:35:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:30,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:30,615 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 22:35:30,618 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 22:35:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:30,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:35:30,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:31,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:35:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661955023] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:31,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:35:31,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-04-01 22:35:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388217010] [2023-04-01 22:35:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:35:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:35:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:35:31,562 INFO L87 Difference]: Start difference. First operand 28710 states and 38814 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 22:35:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:39,478 INFO L93 Difference]: Finished difference Result 103173 states and 148091 transitions. [2023-04-01 22:35:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:35:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 172 [2023-04-01 22:35:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:39,784 INFO L225 Difference]: With dead ends: 103173 [2023-04-01 22:35:39,785 INFO L226 Difference]: Without dead ends: 74469 [2023-04-01 22:35:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:35:39,857 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2718 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 7410 mSolverCounterSat, 1968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 9378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1968 IncrementalHoareTripleChecker+Valid, 7410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:39,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 638 Invalid, 9378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1968 Valid, 7410 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 22:35:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74469 states. [2023-04-01 22:35:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74469 to 74297. [2023-04-01 22:35:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74297 states, 72418 states have (on average 1.1891932944847965) internal successors, (86119), 72868 states have internal predecessors, (86119), 354 states have call successors, (354), 354 states have call predecessors, (354), 1524 states have return successors, (17164), 1074 states have call predecessors, (17164), 353 states have call successors, (17164) [2023-04-01 22:35:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74297 states to 74297 states and 103637 transitions. [2023-04-01 22:35:42,421 INFO L78 Accepts]: Start accepts. Automaton has 74297 states and 103637 transitions. Word has length 172 [2023-04-01 22:35:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:42,421 INFO L495 AbstractCegarLoop]: Abstraction has 74297 states and 103637 transitions. [2023-04-01 22:35:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 22:35:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 74297 states and 103637 transitions. [2023-04-01 22:35:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-04-01 22:35:42,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:42,425 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:35:42,435 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 22:35:42,635 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 22:35:42,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:42,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1675663152, now seen corresponding path program 1 times [2023-04-01 22:35:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617625597] [2023-04-01 22:35:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:35:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:35:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617625597] [2023-04-01 22:35:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617625597] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723120249] [2023-04-01 22:35:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:43,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:43,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:43,178 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 22:35:43,180 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 22:35:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:43,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:35:43,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:35:43,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:35:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723120249] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:35:43,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:35:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181673898] [2023-04-01 22:35:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:35:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:35:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:35:43,366 INFO L87 Difference]: Start difference. First operand 74297 states and 103637 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 22:35:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:47,645 INFO L93 Difference]: Finished difference Result 168294 states and 240173 transitions. [2023-04-01 22:35:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:35:47,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 243 [2023-04-01 22:35:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:48,097 INFO L225 Difference]: With dead ends: 168294 [2023-04-01 22:35:48,097 INFO L226 Difference]: Without dead ends: 94003 [2023-04-01 22:35:48,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:35:48,262 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 823 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:48,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2072 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:35:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94003 states. [2023-04-01 22:35:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94003 to 93985. [2023-04-01 22:35:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93985 states, 91753 states have (on average 1.1649864309613855) internal successors, (106891), 92271 states have internal predecessors, (106891), 450 states have call successors, (450), 450 states have call predecessors, (450), 1781 states have return successors, (21381), 1263 states have call predecessors, (21381), 449 states have call successors, (21381) [2023-04-01 22:35:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93985 states to 93985 states and 128722 transitions. [2023-04-01 22:35:50,734 INFO L78 Accepts]: Start accepts. Automaton has 93985 states and 128722 transitions. Word has length 243 [2023-04-01 22:35:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:50,734 INFO L495 AbstractCegarLoop]: Abstraction has 93985 states and 128722 transitions. [2023-04-01 22:35:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 22:35:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 93985 states and 128722 transitions. [2023-04-01 22:35:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-04-01 22:35:50,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:50,742 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:35:50,749 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 22:35:50,946 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 22:35:50,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:50,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -541955642, now seen corresponding path program 1 times [2023-04-01 22:35:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525838814] [2023-04-01 22:35:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:35:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 73 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:35:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525838814] [2023-04-01 22:35:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525838814] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119560214] [2023-04-01 22:35:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:51,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:51,930 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 22:35:51,932 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 22:35:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:52,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:35:52,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:35:52,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:35:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119560214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:52,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:35:52,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-04-01 22:35:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728500481] [2023-04-01 22:35:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:52,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:35:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:35:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:35:52,122 INFO L87 Difference]: Start difference. First operand 93985 states and 128722 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 22:35:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:56,384 INFO L93 Difference]: Finished difference Result 187965 states and 257605 transitions. [2023-04-01 22:35:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:35:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 252 [2023-04-01 22:35:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:56,640 INFO L225 Difference]: With dead ends: 187965 [2023-04-01 22:35:56,640 INFO L226 Difference]: Without dead ends: 93986 [2023-04-01 22:35:56,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 254 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 22:35:56,733 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 1189 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:56,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1510 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:35:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93986 states. [2023-04-01 22:35:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93986 to 90768. [2023-04-01 22:35:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90768 states, 88570 states have (on average 1.120221293891837) internal successors, (99218), 89087 states have internal predecessors, (99218), 434 states have call successors, (434), 434 states have call predecessors, (434), 1763 states have return successors, (15382), 1246 states have call predecessors, (15382), 433 states have call successors, (15382) [2023-04-01 22:35:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90768 states to 90768 states and 115034 transitions. [2023-04-01 22:35:58,544 INFO L78 Accepts]: Start accepts. Automaton has 90768 states and 115034 transitions. Word has length 252 [2023-04-01 22:35:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:58,545 INFO L495 AbstractCegarLoop]: Abstraction has 90768 states and 115034 transitions. [2023-04-01 22:35:58,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 22:35:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 90768 states and 115034 transitions. [2023-04-01 22:35:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-04-01 22:35:58,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:58,556 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:35:58,566 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 22:35:58,766 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 22:35:58,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:58,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash 457207781, now seen corresponding path program 1 times [2023-04-01 22:35:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:58,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028888506] [2023-04-01 22:35:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:35:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:35:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028888506] [2023-04-01 22:35:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028888506] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291518471] [2023-04-01 22:35:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:59,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:59,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:59,148 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 22:35:59,151 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 22:35:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:59,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:35:59,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:35:59,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:35:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291518471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:35:59,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:35:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:35:59,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235639598] [2023-04-01 22:35:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:35:59,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:35:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:35:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:35:59,428 INFO L87 Difference]: Start difference. First operand 90768 states and 115034 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 22:36:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:36:03,932 INFO L93 Difference]: Finished difference Result 238194 states and 307381 transitions. [2023-04-01 22:36:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:36:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 265 [2023-04-01 22:36:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:36:04,450 INFO L225 Difference]: With dead ends: 238194 [2023-04-01 22:36:04,450 INFO L226 Difference]: Without dead ends: 147432 [2023-04-01 22:36:04,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:36:04,526 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 999 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:36:04,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 624 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 22:36:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147432 states. [2023-04-01 22:36:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147432 to 129765. [2023-04-01 22:36:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129765 states, 127004 states have (on average 1.1153979402223553) internal successors, (141660), 127606 states have internal predecessors, (141660), 626 states have call successors, (626), 626 states have call predecessors, (626), 2134 states have return successors, (22378), 1532 states have call predecessors, (22378), 625 states have call successors, (22378) [2023-04-01 22:36:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129765 states to 129765 states and 164664 transitions. [2023-04-01 22:36:07,202 INFO L78 Accepts]: Start accepts. Automaton has 129765 states and 164664 transitions. Word has length 265 [2023-04-01 22:36:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:36:07,203 INFO L495 AbstractCegarLoop]: Abstraction has 129765 states and 164664 transitions. [2023-04-01 22:36:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 22:36:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 129765 states and 164664 transitions. [2023-04-01 22:36:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-04-01 22:36:07,213 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:36:07,213 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:07,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:36:07,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:07,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:36:07,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:36:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash -233114985, now seen corresponding path program 1 times [2023-04-01 22:36:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:36:07,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351007179] [2023-04-01 22:36:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:36:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:36:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:36:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:36:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:36:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 113 proven. 235 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:36:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:36:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351007179] [2023-04-01 22:36:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351007179] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:36:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021788574] [2023-04-01 22:36:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:08,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:08,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:36:08,624 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 22:36:08,652 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 22:36:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:08,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:36:08,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:36:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:36:08,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:36:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:36:09,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021788574] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:36:09,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:36:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 22:36:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177244492] [2023-04-01 22:36:09,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:36:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:36:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:36:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:36:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:36:09,156 INFO L87 Difference]: Start difference. First operand 129765 states and 164664 transitions. Second operand has 15 states, 15 states have (on average 34.6) internal successors, (519), 13 states have internal predecessors, (519), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 22:36:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:36:27,367 INFO L93 Difference]: Finished difference Result 319037 states and 403675 transitions. [2023-04-01 22:36:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-04-01 22:36:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 34.6) internal successors, (519), 13 states have internal predecessors, (519), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 331 [2023-04-01 22:36:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:36:27,997 INFO L225 Difference]: With dead ends: 319037 [2023-04-01 22:36:27,997 INFO L226 Difference]: Without dead ends: 189278 [2023-04-01 22:36:28,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 742 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3751 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1277, Invalid=9229, Unknown=0, NotChecked=0, Total=10506 [2023-04-01 22:36:28,107 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 22343 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 18809 mSolverCounterSat, 4719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22354 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 23528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4719 IncrementalHoareTripleChecker+Valid, 18809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:36:28,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22354 Valid, 2382 Invalid, 23528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4719 Valid, 18809 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-04-01 22:36:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189278 states. [2023-04-01 22:36:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189278 to 176232. [2023-04-01 22:36:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176232 states, 172675 states have (on average 1.068892427971623) internal successors, (184571), 173468 states have internal predecessors, (184571), 876 states have call successors, (876), 854 states have call predecessors, (876), 2680 states have return successors, (22639), 1909 states have call predecessors, (22639), 875 states have call successors, (22639) [2023-04-01 22:36:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176232 states to 176232 states and 208086 transitions. [2023-04-01 22:36:31,265 INFO L78 Accepts]: Start accepts. Automaton has 176232 states and 208086 transitions. Word has length 331 [2023-04-01 22:36:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:36:31,266 INFO L495 AbstractCegarLoop]: Abstraction has 176232 states and 208086 transitions. [2023-04-01 22:36:31,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 34.6) internal successors, (519), 13 states have internal predecessors, (519), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 22:36:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 176232 states and 208086 transitions. [2023-04-01 22:36:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-04-01 22:36:31,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:36:31,284 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:36:31,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:36:31,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:31,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:36:31,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:36:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash 178050586, now seen corresponding path program 1 times [2023-04-01 22:36:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:36:31,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463052244] [2023-04-01 22:36:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:31,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:36:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:36:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:36:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:36:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:36:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 117 proven. 9 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-04-01 22:36:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:36:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463052244] [2023-04-01 22:36:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463052244] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:36:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968422580] [2023-04-01 22:36:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:32,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:36:32,701 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 22:36:32,704 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 22:36:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:32,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:36:32,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:36:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 22:36:33,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:36:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968422580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:36:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:36:33,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:36:33,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240017160] [2023-04-01 22:36:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:36:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:36:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:36:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:36:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:36:33,286 INFO L87 Difference]: Start difference. First operand 176232 states and 208086 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:36:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:36:36,675 INFO L93 Difference]: Finished difference Result 350797 states and 414322 transitions. [2023-04-01 22:36:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:36:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 435 [2023-04-01 22:36:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:36:37,463 INFO L225 Difference]: With dead ends: 350797 [2023-04-01 22:36:37,463 INFO L226 Difference]: Without dead ends: 174571 [2023-04-01 22:36:37,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:36:37,612 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1650 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:36:37,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 308 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 22:36:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174571 states. [2023-04-01 22:36:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174571 to 172961. [2023-04-01 22:36:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172961 states, 169452 states have (on average 1.0692467483417132) internal successors, (181186), 170236 states have internal predecessors, (181186), 859 states have call successors, (859), 838 states have call predecessors, (859), 2649 states have return successors, (22159), 1886 states have call predecessors, (22159), 858 states have call successors, (22159) [2023-04-01 22:36:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172961 states to 172961 states and 204204 transitions. [2023-04-01 22:36:40,778 INFO L78 Accepts]: Start accepts. Automaton has 172961 states and 204204 transitions. Word has length 435 [2023-04-01 22:36:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:36:40,784 INFO L495 AbstractCegarLoop]: Abstraction has 172961 states and 204204 transitions. [2023-04-01 22:36:40,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:36:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 172961 states and 204204 transitions. [2023-04-01 22:36:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-04-01 22:36:40,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:36:40,828 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:36:40,837 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 22:36:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:41,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:36:41,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:36:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1855864131, now seen corresponding path program 1 times [2023-04-01 22:36:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:36:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889460574] [2023-04-01 22:36:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:36:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:36:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:36:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:36:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 22:36:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-04-01 22:36:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-04-01 22:36:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:36:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889460574] [2023-04-01 22:36:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889460574] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:36:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436595336] [2023-04-01 22:36:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:36:41,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:36:41,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:36:41,853 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 22:36:41,855 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 22:36:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:36:42,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:36:42,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:36:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-04-01 22:36:42,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:36:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-04-01 22:36:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436595336] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:36:42,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:36:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:36:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114062537] [2023-04-01 22:36:42,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:36:42,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:36:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:36:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:36:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:36:42,780 INFO L87 Difference]: Start difference. First operand 172961 states and 204204 transitions. Second operand has 10 states, 10 states have (on average 72.6) internal successors, (726), 8 states have internal predecessors, (726), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:36:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:36:56,370 INFO L93 Difference]: Finished difference Result 435673 states and 517416 transitions. [2023-04-01 22:36:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:36:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 72.6) internal successors, (726), 8 states have internal predecessors, (726), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 529 [2023-04-01 22:36:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:36:57,256 INFO L225 Difference]: With dead ends: 435673 [2023-04-01 22:36:57,257 INFO L226 Difference]: Without dead ends: 243167 [2023-04-01 22:36:57,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1072 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:36:57,625 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 4490 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 15911 mSolverCounterSat, 1653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 17564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1653 IncrementalHoareTripleChecker+Valid, 15911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:36:57,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 910 Invalid, 17564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1653 Valid, 15911 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-04-01 22:36:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243167 states. [2023-04-01 22:37:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243167 to 222515. [2023-04-01 22:37:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222515 states, 218314 states have (on average 1.0582967652097437) internal successors, (231041), 219211 states have internal predecessors, (231041), 1106 states have call successors, (1106), 1082 states have call predecessors, (1106), 3094 states have return successors, (24383), 2221 states have call predecessors, (24383), 1105 states have call successors, (24383) [2023-04-01 22:37:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222515 states to 222515 states and 256530 transitions. [2023-04-01 22:37:03,233 INFO L78 Accepts]: Start accepts. Automaton has 222515 states and 256530 transitions. Word has length 529 [2023-04-01 22:37:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:37:03,235 INFO L495 AbstractCegarLoop]: Abstraction has 222515 states and 256530 transitions. [2023-04-01 22:37:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.6) internal successors, (726), 8 states have internal predecessors, (726), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:37:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 222515 states and 256530 transitions. [2023-04-01 22:37:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-04-01 22:37:03,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:37:03,332 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:03,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:37:03,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:37:03,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:37:03,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:37:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash -52660379, now seen corresponding path program 1 times [2023-04-01 22:37:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:37:03,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488127169] [2023-04-01 22:37:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:37:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:37:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:37:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:37:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:37:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:37:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 272 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-04-01 22:37:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:37:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488127169] [2023-04-01 22:37:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488127169] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:37:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587353798] [2023-04-01 22:37:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:05,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:37:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:37:05,048 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 22:37:05,050 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 22:37:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:05,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:37:05,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:37:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:37:05,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:37:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:37:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587353798] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:37:06,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:37:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:37:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911066263] [2023-04-01 22:37:06,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:37:06,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:37:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:37:06,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:37:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:37:06,437 INFO L87 Difference]: Start difference. First operand 222515 states and 256530 transitions. Second operand has 12 states, 12 states have (on average 89.66666666666667) internal successors, (1076), 10 states have internal predecessors, (1076), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:37:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:37:20,738 INFO L93 Difference]: Finished difference Result 511442 states and 612206 transitions. [2023-04-01 22:37:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 22:37:20,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 89.66666666666667) internal successors, (1076), 10 states have internal predecessors, (1076), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 530 [2023-04-01 22:37:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:37:22,101 INFO L225 Difference]: With dead ends: 511442 [2023-04-01 22:37:22,101 INFO L226 Difference]: Without dead ends: 286369 [2023-04-01 22:37:22,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1079 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:37:22,297 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 8392 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 13876 mSolverCounterSat, 2634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8396 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 16510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2634 IncrementalHoareTripleChecker+Valid, 13876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:37:22,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8396 Valid, 952 Invalid, 16510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2634 Valid, 13876 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-04-01 22:37:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286369 states. [2023-04-01 22:37:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286369 to 276895. [2023-04-01 22:37:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276895 states, 271509 states have (on average 1.0441421831320508) internal successors, (283494), 272586 states have internal predecessors, (283494), 1680 states have call successors, (1680), 1342 states have call predecessors, (1680), 3705 states have return successors, (35281), 2966 states have call predecessors, (35281), 1679 states have call successors, (35281) [2023-04-01 22:37:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276895 states to 276895 states and 320455 transitions. [2023-04-01 22:37:28,107 INFO L78 Accepts]: Start accepts. Automaton has 276895 states and 320455 transitions. Word has length 530 [2023-04-01 22:37:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:37:28,108 INFO L495 AbstractCegarLoop]: Abstraction has 276895 states and 320455 transitions. [2023-04-01 22:37:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 89.66666666666667) internal successors, (1076), 10 states have internal predecessors, (1076), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:37:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 276895 states and 320455 transitions. [2023-04-01 22:37:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-04-01 22:37:28,206 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:37:28,206 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:28,217 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 22:37:28,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:37:28,413 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:37:28,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:37:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1946382917, now seen corresponding path program 1 times [2023-04-01 22:37:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:37:28,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805825915] [2023-04-01 22:37:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:37:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:37:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:37:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:37:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:37:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-04-01 22:37:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 161 proven. 15 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-04-01 22:37:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:37:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805825915] [2023-04-01 22:37:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805825915] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:37:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121999598] [2023-04-01 22:37:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:37:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:37:29,925 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 22:37:29,928 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 22:37:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:30,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 22:37:30,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:37:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-04-01 22:37:30,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:37:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121999598] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:37:30,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:37:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2023-04-01 22:37:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139971071] [2023-04-01 22:37:30,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:37:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:37:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:37:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:37:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:37:30,138 INFO L87 Difference]: Start difference. First operand 276895 states and 320455 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 22:37:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:37:36,033 INFO L93 Difference]: Finished difference Result 548939 states and 636142 transitions. [2023-04-01 22:37:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:37:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 655 [2023-04-01 22:37:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:37:37,180 INFO L225 Difference]: With dead ends: 548939 [2023-04-01 22:37:37,180 INFO L226 Difference]: Without dead ends: 279356 [2023-04-01 22:37:37,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:37:37,564 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 945 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:37:37,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1720 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:37:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279356 states. [2023-04-01 22:37:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279356 to 276886. [2023-04-01 22:37:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276886 states, 271503 states have (on average 1.039649653963308) internal successors, (282268), 272578 states have internal predecessors, (282268), 1680 states have call successors, (1680), 1342 states have call predecessors, (1680), 3702 states have return successors, (32149), 2965 states have call predecessors, (32149), 1679 states have call successors, (32149) [2023-04-01 22:37:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276886 states to 276886 states and 316097 transitions. [2023-04-01 22:37:42,474 INFO L78 Accepts]: Start accepts. Automaton has 276886 states and 316097 transitions. Word has length 655 [2023-04-01 22:37:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:37:42,474 INFO L495 AbstractCegarLoop]: Abstraction has 276886 states and 316097 transitions. [2023-04-01 22:37:42,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 22:37:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 276886 states and 316097 transitions. [2023-04-01 22:37:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-04-01 22:37:42,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:37:42,875 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 22:37:42,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:37:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:37:43,077 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:37:43,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:37:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -39767569, now seen corresponding path program 1 times [2023-04-01 22:37:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:37:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26388681] [2023-04-01 22:37:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:37:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:37:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:37:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:37:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 22:37:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:37:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 227 proven. 239 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:37:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:37:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26388681] [2023-04-01 22:37:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26388681] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:37:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11764962] [2023-04-01 22:37:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:37:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:37:44,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:37:44,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:37:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:44,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:37:44,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:37:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-04-01 22:37:45,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:37:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-04-01 22:37:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11764962] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:37:46,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:37:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 22:37:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729964565] [2023-04-01 22:37:46,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:37:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:37:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:37:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:37:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:37:46,138 INFO L87 Difference]: Start difference. First operand 276886 states and 316097 transitions. Second operand has 15 states, 15 states have (on average 94.13333333333334) internal successors, (1412), 13 states have internal predecessors, (1412), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:38:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:02,445 INFO L93 Difference]: Finished difference Result 530100 states and 608880 transitions. [2023-04-01 22:38:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 22:38:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 94.13333333333334) internal successors, (1412), 13 states have internal predecessors, (1412), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 671 [2023-04-01 22:38:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:03,677 INFO L225 Difference]: With dead ends: 530100 [2023-04-01 22:38:03,677 INFO L226 Difference]: Without dead ends: 268288 [2023-04-01 22:38:03,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 1375 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=2054, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 22:38:03,920 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 12483 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 18573 mSolverCounterSat, 2211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12483 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 20784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2211 IncrementalHoareTripleChecker+Valid, 18573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:03,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12483 Valid, 1194 Invalid, 20784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2211 Valid, 18573 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-01 22:38:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268288 states. [2023-04-01 22:38:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268288 to 263952. [2023-04-01 22:38:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263952 states, 258987 states have (on average 1.0332333283137765) internal successors, (267594), 259928 states have internal predecessors, (267594), 1595 states have call successors, (1595), 1282 states have call predecessors, (1595), 3369 states have return successors, (26024), 2741 states have call predecessors, (26024), 1594 states have call successors, (26024) [2023-04-01 22:38:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263952 states to 263952 states and 295213 transitions. [2023-04-01 22:38:09,158 INFO L78 Accepts]: Start accepts. Automaton has 263952 states and 295213 transitions. Word has length 671 [2023-04-01 22:38:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:09,158 INFO L495 AbstractCegarLoop]: Abstraction has 263952 states and 295213 transitions. [2023-04-01 22:38:09,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 94.13333333333334) internal successors, (1412), 13 states have internal predecessors, (1412), 7 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:38:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 263952 states and 295213 transitions. [2023-04-01 22:38:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-04-01 22:38:09,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:09,219 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:09,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:38:09,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:38:09,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:09,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash -839048625, now seen corresponding path program 1 times [2023-04-01 22:38:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:09,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706765979] [2023-04-01 22:38:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:09,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat