/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/Problem11_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:17:04,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:17:04,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:17:04,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:17:04,771 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 22:17:04,791 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:17:04,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:17:04,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:17:04,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:17:04,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:17:04,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:17:04,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:17:04,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:17:04,797 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:17:04,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:17:04,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:17:04,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:17:04,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:17:04,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:17:04,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:17:04,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:17:04,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:17:04,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:17:04,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:17:04,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:17:04,801 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:17:04,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:17:04,801 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:17:04,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:17:05,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:17:05,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:17:05,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:17:05,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:17:05,043 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:17:05,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2023-04-01 22:17:06,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:17:06,453 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:17:06,454 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2023-04-01 22:17:06,465 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1b00348/42f00d7ca10d45d8b5b321ae661af4bc/FLAG08a3c6aa0 [2023-04-01 22:17:06,476 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1b00348/42f00d7ca10d45d8b5b321ae661af4bc [2023-04-01 22:17:06,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:17:06,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:17:06,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:17:06,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:17:06,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:17:06,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:17:06" (1/1) ... [2023-04-01 22:17:06,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776652fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:06, skipping insertion in model container [2023-04-01 22:17:06,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:17:06" (1/1) ... [2023-04-01 22:17:06,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:17:06,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:17:06,735 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/Problem11_label25.c[4556,4569] [2023-04-01 22:17:06,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:17:06,999 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:17:07,032 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/Problem11_label25.c[4556,4569] [2023-04-01 22:17:07,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:17:07,160 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:17:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07 WrapperNode [2023-04-01 22:17:07,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:17:07,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:17:07,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:17:07,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:17:07,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:17:07,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:17:07,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:17:07,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:17:07,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (1/1) ... [2023-04-01 22:17:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:17:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:07,342 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 22:17:07,363 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 22:17:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:17:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:17:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:17:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:17:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:17:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:17:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:17:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:17:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:17:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:17:07,472 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:17:07,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:17:08,828 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:17:08,842 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:17:08,842 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:17:08,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:17:08 BoogieIcfgContainer [2023-04-01 22:17:08,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:17:08,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:17:08,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:17:08,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:17:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:17:06" (1/3) ... [2023-04-01 22:17:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:17:08, skipping insertion in model container [2023-04-01 22:17:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:17:07" (2/3) ... [2023-04-01 22:17:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf6906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:17:08, skipping insertion in model container [2023-04-01 22:17:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:17:08" (3/3) ... [2023-04-01 22:17:08,855 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2023-04-01 22:17:08,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:17:08,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:17:08,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:17:08,940 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;@267196d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:17:08,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:17:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:17:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-01 22:17:08,954 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:08,955 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] [2023-04-01 22:17:08,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:08,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -666974638, now seen corresponding path program 1 times [2023-04-01 22:17:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495177103] [2023-04-01 22:17:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:09,519 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 22:17:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495177103] [2023-04-01 22:17:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495177103] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:09,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:17:09,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:17:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708110702] [2023-04-01 22:17:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:17:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:17:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:17:09,562 INFO L87 Difference]: Start difference. First operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 22:17:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:11,225 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2023-04-01 22:17:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:17:11,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 37 [2023-04-01 22:17:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:11,241 INFO L225 Difference]: With dead ends: 791 [2023-04-01 22:17:11,242 INFO L226 Difference]: Without dead ends: 434 [2023-04-01 22:17:11,247 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 22:17:11,250 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 658 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 59 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 22:17:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-04-01 22:17:11,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2023-04-01 22:17:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.4452380952380952) internal successors, (607), 422 states have internal predecessors, (607), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 22:17:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2023-04-01 22:17:11,311 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 37 [2023-04-01 22:17:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:11,312 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2023-04-01 22:17:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 22:17:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2023-04-01 22:17:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 22:17:11,316 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:11,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:17:11,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:11,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1833901078, now seen corresponding path program 1 times [2023-04-01 22:17:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:11,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116064975] [2023-04-01 22:17:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116064975] [2023-04-01 22:17:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116064975] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:17:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:17:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137489695] [2023-04-01 22:17:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:17:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:17:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:11,666 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 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 22:17:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:13,663 INFO L93 Difference]: Finished difference Result 1664 states and 2471 transitions. [2023-04-01 22:17:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:17:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 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 109 [2023-04-01 22:17:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:13,671 INFO L225 Difference]: With dead ends: 1664 [2023-04-01 22:17:13,671 INFO L226 Difference]: Without dead ends: 1240 [2023-04-01 22:17:13,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:17:13,673 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1651 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:13,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 146 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 22:17:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2023-04-01 22:17:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1208. [2023-04-01 22:17:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1181 states have (on average 1.3776460626587637) internal successors, (1627), 1192 states have internal predecessors, (1627), 8 states have call successors, (8), 8 states have call predecessors, (8), 18 states have return successors, (55), 7 states have call predecessors, (55), 7 states have call successors, (55) [2023-04-01 22:17:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1690 transitions. [2023-04-01 22:17:13,741 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1690 transitions. Word has length 109 [2023-04-01 22:17:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:13,747 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1690 transitions. [2023-04-01 22:17:13,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 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 22:17:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1690 transitions. [2023-04-01 22:17:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 22:17:13,754 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:13,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:17:13,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:13,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1112034725, now seen corresponding path program 1 times [2023-04-01 22:17:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762211986] [2023-04-01 22:17:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:13,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762211986] [2023-04-01 22:17:14,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762211986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773552199] [2023-04-01 22:17:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:14,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:14,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:14,049 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 22:17:14,053 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 22:17:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:14,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:17:14,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:14,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:17:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773552199] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:14,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:17:14,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:17:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282154298] [2023-04-01 22:17:14,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:14,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:17:14,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:17:14,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:17:14,298 INFO L87 Difference]: Start difference. First operand 1208 states and 1690 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:17:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:15,071 INFO L93 Difference]: Finished difference Result 2808 states and 3930 transitions. [2023-04-01 22:17:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:17:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2023-04-01 22:17:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:15,079 INFO L225 Difference]: With dead ends: 2808 [2023-04-01 22:17:15,079 INFO L226 Difference]: Without dead ends: 1606 [2023-04-01 22:17:15,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 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 22:17:15,083 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 171 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:15,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 374 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 22:17:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2023-04-01 22:17:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1594. [2023-04-01 22:17:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1558 states have (on average 1.3363286264441592) internal successors, (2082), 1574 states have internal predecessors, (2082), 10 states have call successors, (10), 10 states have call predecessors, (10), 25 states have return successors, (89), 9 states have call predecessors, (89), 9 states have call successors, (89) [2023-04-01 22:17:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2181 transitions. [2023-04-01 22:17:15,126 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2181 transitions. Word has length 110 [2023-04-01 22:17:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:15,126 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2181 transitions. [2023-04-01 22:17:15,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:17:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2181 transitions. [2023-04-01 22:17:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-01 22:17:15,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:15,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:15,148 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 22:17:15,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:15,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:15,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash 365224890, now seen corresponding path program 1 times [2023-04-01 22:17:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563253775] [2023-04-01 22:17:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:15,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:15,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563253775] [2023-04-01 22:17:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563253775] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:15,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558792351] [2023-04-01 22:17:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:15,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:15,565 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 22:17:15,592 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 22:17:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:15,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:17:15,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:15,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:17:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558792351] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:15,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:17:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:17:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207813780] [2023-04-01 22:17:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:15,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:17:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:17:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:17:15,748 INFO L87 Difference]: Start difference. First operand 1594 states and 2181 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:17:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:16,466 INFO L93 Difference]: Finished difference Result 3193 states and 4396 transitions. [2023-04-01 22:17:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:17:16,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2023-04-01 22:17:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:16,475 INFO L225 Difference]: With dead ends: 3193 [2023-04-01 22:17:16,475 INFO L226 Difference]: Without dead ends: 1605 [2023-04-01 22:17:16,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 22:17:16,480 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 186 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 352 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 22:17:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2023-04-01 22:17:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1594. [2023-04-01 22:17:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1558 states have (on average 1.3119383825417201) internal successors, (2044), 1574 states have internal predecessors, (2044), 10 states have call successors, (10), 10 states have call predecessors, (10), 25 states have return successors, (87), 9 states have call predecessors, (87), 9 states have call successors, (87) [2023-04-01 22:17:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2141 transitions. [2023-04-01 22:17:16,525 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2141 transitions. Word has length 111 [2023-04-01 22:17:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:16,527 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2141 transitions. [2023-04-01 22:17:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:17:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2141 transitions. [2023-04-01 22:17:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 22:17:16,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:16,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:16,548 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 22:17:16,742 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,SelfDestructingSolverStorable3 [2023-04-01 22:17:16,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:16,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1526265822, now seen corresponding path program 1 times [2023-04-01 22:17:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902148475] [2023-04-01 22:17:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:16,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902148475] [2023-04-01 22:17:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902148475] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103276809] [2023-04-01 22:17:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:17,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:17,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:17,278 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 22:17:17,306 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 22:17:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:17,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:17:17,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:17,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:17:17,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103276809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:17,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:17:17,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-04-01 22:17:17,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441042942] [2023-04-01 22:17:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:17:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:17:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:17:17,792 INFO L87 Difference]: Start difference. First operand 1594 states and 2141 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:17:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:18,827 INFO L93 Difference]: Finished difference Result 3832 states and 5174 transitions. [2023-04-01 22:17:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:17:18,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 131 [2023-04-01 22:17:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:18,838 INFO L225 Difference]: With dead ends: 3832 [2023-04-01 22:17:18,838 INFO L226 Difference]: Without dead ends: 2244 [2023-04-01 22:17:18,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:17:18,842 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 455 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:18,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 127 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 22:17:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2023-04-01 22:17:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2210. [2023-04-01 22:17:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2142 states have (on average 1.2380952380952381) internal successors, (2652), 2184 states have internal predecessors, (2652), 13 states have call successors, (13), 13 states have call predecessors, (13), 54 states have return successors, (189), 12 states have call predecessors, (189), 12 states have call successors, (189) [2023-04-01 22:17:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2854 transitions. [2023-04-01 22:17:18,908 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2854 transitions. Word has length 131 [2023-04-01 22:17:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:18,909 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 2854 transitions. [2023-04-01 22:17:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:17:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2854 transitions. [2023-04-01 22:17:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-01 22:17:18,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:18,914 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:17:18,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:17:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:19,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:19,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash 592293701, now seen corresponding path program 1 times [2023-04-01 22:17:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000871911] [2023-04-01 22:17:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:17:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000871911] [2023-04-01 22:17:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000871911] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091620561] [2023-04-01 22:17:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:19,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:19,565 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 22:17:19,568 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 22:17:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:19,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:17:19,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:19,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:17:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091620561] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:17:20,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:17:20,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:17:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886004056] [2023-04-01 22:17:20,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:17:20,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:17:20,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:17:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:17:20,083 INFO L87 Difference]: Start difference. First operand 2210 states and 2854 transitions. Second operand has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:17:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:22,261 INFO L93 Difference]: Finished difference Result 4913 states and 6611 transitions. [2023-04-01 22:17:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 22:17:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 239 [2023-04-01 22:17:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:22,284 INFO L225 Difference]: With dead ends: 4913 [2023-04-01 22:17:22,284 INFO L226 Difference]: Without dead ends: 2897 [2023-04-01 22:17:22,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:17:22,290 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1015 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:22,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 206 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 22:17:22,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2023-04-01 22:17:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2840. [2023-04-01 22:17:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2739 states have (on average 1.208105147864184) internal successors, (3309), 2808 states have internal predecessors, (3309), 16 states have call successors, (16), 16 states have call predecessors, (16), 84 states have return successors, (278), 15 states have call predecessors, (278), 15 states have call successors, (278) [2023-04-01 22:17:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3603 transitions. [2023-04-01 22:17:22,388 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3603 transitions. Word has length 239 [2023-04-01 22:17:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:22,388 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 3603 transitions. [2023-04-01 22:17:22,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:17:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3603 transitions. [2023-04-01 22:17:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-04-01 22:17:22,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:22,393 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:17:22,400 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 22:17:22,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:22,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:22,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -152520756, now seen corresponding path program 1 times [2023-04-01 22:17:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:22,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974053811] [2023-04-01 22:17:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-01 22:17:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 123 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:17:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974053811] [2023-04-01 22:17:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974053811] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36142431] [2023-04-01 22:17:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:23,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:23,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:23,268 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 22:17:23,270 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 22:17:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:23,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:17:23,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 22:17:23,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:17:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 22:17:25,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36142431] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:25,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:17:25,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 16 [2023-04-01 22:17:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151068996] [2023-04-01 22:17:25,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:25,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:17:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:17:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:17:25,719 INFO L87 Difference]: Start difference. First operand 2840 states and 3603 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:17:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:27,292 INFO L93 Difference]: Finished difference Result 8442 states and 11409 transitions. [2023-04-01 22:17:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:17:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 247 [2023-04-01 22:17:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:27,315 INFO L225 Difference]: With dead ends: 8442 [2023-04-01 22:17:27,315 INFO L226 Difference]: Without dead ends: 5796 [2023-04-01 22:17:27,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:17:27,322 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 925 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:27,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 95 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 22:17:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5796 states. [2023-04-01 22:17:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5796 to 5786. [2023-04-01 22:17:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 5600 states have (on average 1.228392857142857) internal successors, (6879), 5724 states have internal predecessors, (6879), 31 states have call successors, (31), 31 states have call predecessors, (31), 154 states have return successors, (808), 30 states have call predecessors, (808), 30 states have call successors, (808) [2023-04-01 22:17:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 7718 transitions. [2023-04-01 22:17:27,468 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 7718 transitions. Word has length 247 [2023-04-01 22:17:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:27,468 INFO L495 AbstractCegarLoop]: Abstraction has 5786 states and 7718 transitions. [2023-04-01 22:17:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:17:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 7718 transitions. [2023-04-01 22:17:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-04-01 22:17:27,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:27,472 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:17:27,481 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 22:17:27,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:27,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:27,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1456528951, now seen corresponding path program 1 times [2023-04-01 22:17:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835236087] [2023-04-01 22:17:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:17:28,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835236087] [2023-04-01 22:17:28,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835236087] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004278137] [2023-04-01 22:17:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:28,029 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 22:17:28,031 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 22:17:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:28,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:17:28,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 22:17:28,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:17:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 64 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004278137] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:17:29,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:17:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2023-04-01 22:17:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749964736] [2023-04-01 22:17:29,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:17:29,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:17:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:17:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:17:29,161 INFO L87 Difference]: Start difference. First operand 5786 states and 7718 transitions. Second operand has 18 states, 18 states have (on average 33.5) internal successors, (603), 16 states have internal predecessors, (603), 7 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:17:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:37,053 INFO L93 Difference]: Finished difference Result 25556 states and 36613 transitions. [2023-04-01 22:17:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-04-01 22:17:37,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.5) internal successors, (603), 16 states have internal predecessors, (603), 7 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 257 [2023-04-01 22:17:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:37,133 INFO L225 Difference]: With dead ends: 25556 [2023-04-01 22:17:37,134 INFO L226 Difference]: Without dead ends: 17860 [2023-04-01 22:17:37,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=837, Invalid=3585, Unknown=0, NotChecked=0, Total=4422 [2023-04-01 22:17:37,158 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 5458 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 8633 mSolverCounterSat, 1465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5458 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 10098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1465 IncrementalHoareTripleChecker+Valid, 8633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:37,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5458 Valid, 438 Invalid, 10098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1465 Valid, 8633 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:17:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17860 states. [2023-04-01 22:17:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17860 to 16678. [2023-04-01 22:17:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16678 states, 16226 states have (on average 1.1865524466904966) internal successors, (19253), 16504 states have internal predecessors, (19253), 87 states have call successors, (87), 87 states have call predecessors, (87), 364 states have return successors, (2344), 86 states have call predecessors, (2344), 86 states have call successors, (2344) [2023-04-01 22:17:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16678 states to 16678 states and 21684 transitions. [2023-04-01 22:17:37,679 INFO L78 Accepts]: Start accepts. Automaton has 16678 states and 21684 transitions. Word has length 257 [2023-04-01 22:17:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 16678 states and 21684 transitions. [2023-04-01 22:17:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.5) internal successors, (603), 16 states have internal predecessors, (603), 7 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:17:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 16678 states and 21684 transitions. [2023-04-01 22:17:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-04-01 22:17:37,689 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:37,689 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:37,699 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 22:17:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:37,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:37,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1847192739, now seen corresponding path program 1 times [2023-04-01 22:17:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:37,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74922892] [2023-04-01 22:17:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-01 22:17:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 22:17:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74922892] [2023-04-01 22:17:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74922892] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068281555] [2023-04-01 22:17:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:38,270 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 22:17:38,272 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 22:17:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:38,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:17:38,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-04-01 22:17:38,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:17:38,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068281555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:38,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:17:38,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:17:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936762956] [2023-04-01 22:17:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:38,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:17:38,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:17:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:38,546 INFO L87 Difference]: Start difference. First operand 16678 states and 21684 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 22:17:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:39,386 INFO L93 Difference]: Finished difference Result 41316 states and 54286 transitions. [2023-04-01 22:17:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:17:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 313 [2023-04-01 22:17:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:39,482 INFO L225 Difference]: With dead ends: 41316 [2023-04-01 22:17:39,482 INFO L226 Difference]: Without dead ends: 25022 [2023-04-01 22:17:39,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:39,524 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 175 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:39,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 345 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:17:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25022 states. [2023-04-01 22:17:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25022 to 23320. [2023-04-01 22:17:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23320 states, 22767 states have (on average 1.1573769051697633) internal successors, (26350), 23076 states have internal predecessors, (26350), 122 states have call successors, (122), 122 states have call predecessors, (122), 430 states have return successors, (3114), 121 states have call predecessors, (3114), 121 states have call successors, (3114) [2023-04-01 22:17:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23320 states to 23320 states and 29586 transitions. [2023-04-01 22:17:40,149 INFO L78 Accepts]: Start accepts. Automaton has 23320 states and 29586 transitions. Word has length 313 [2023-04-01 22:17:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:40,150 INFO L495 AbstractCegarLoop]: Abstraction has 23320 states and 29586 transitions. [2023-04-01 22:17:40,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 22:17:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 23320 states and 29586 transitions. [2023-04-01 22:17:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-04-01 22:17:40,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:40,161 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:17:40,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:17:40,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:40,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:40,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash -264646485, now seen corresponding path program 1 times [2023-04-01 22:17:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789815859] [2023-04-01 22:17:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 7 proven. 59 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 22:17:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789815859] [2023-04-01 22:17:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789815859] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940567545] [2023-04-01 22:17:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:41,482 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 22:17:41,484 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 22:17:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:41,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 22:17:41,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 22:17:42,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:17:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 63 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:17:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940567545] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:17:44,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:17:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-04-01 22:17:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682217725] [2023-04-01 22:17:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:17:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:17:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:17:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:17:44,145 INFO L87 Difference]: Start difference. First operand 23320 states and 29586 transitions. Second operand has 21 states, 21 states have (on average 35.714285714285715) internal successors, (750), 18 states have internal predecessors, (750), 8 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-01 22:17:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:49,109 INFO L93 Difference]: Finished difference Result 70258 states and 93166 transitions. [2023-04-01 22:17:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-01 22:17:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 35.714285714285715) internal successors, (750), 18 states have internal predecessors, (750), 8 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 343 [2023-04-01 22:17:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:49,323 INFO L225 Difference]: With dead ends: 70258 [2023-04-01 22:17:49,323 INFO L226 Difference]: Without dead ends: 51984 [2023-04-01 22:17:49,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=873, Invalid=2433, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 22:17:49,377 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3815 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 1458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1458 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:49,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3815 Valid, 301 Invalid, 5405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1458 Valid, 3947 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 22:17:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51984 states. [2023-04-01 22:17:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51984 to 50413. [2023-04-01 22:17:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50413 states, 49264 states have (on average 1.1506576810652809) internal successors, (56686), 49889 states have internal predecessors, (56686), 262 states have call successors, (262), 262 states have call predecessors, (262), 886 states have return successors, (6996), 261 states have call predecessors, (6996), 261 states have call successors, (6996) [2023-04-01 22:17:50,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50413 states to 50413 states and 63944 transitions. [2023-04-01 22:17:50,557 INFO L78 Accepts]: Start accepts. Automaton has 50413 states and 63944 transitions. Word has length 343 [2023-04-01 22:17:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:50,558 INFO L495 AbstractCegarLoop]: Abstraction has 50413 states and 63944 transitions. [2023-04-01 22:17:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 35.714285714285715) internal successors, (750), 18 states have internal predecessors, (750), 8 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-01 22:17:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 50413 states and 63944 transitions. [2023-04-01 22:17:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-04-01 22:17:50,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:50,585 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:50,593 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 22:17:50,794 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,SelfDestructingSolverStorable9 [2023-04-01 22:17:50,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:50,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1578712868, now seen corresponding path program 1 times [2023-04-01 22:17:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018298613] [2023-04-01 22:17:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-04-01 22:17:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 22:17:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018298613] [2023-04-01 22:17:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018298613] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:51,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681847111] [2023-04-01 22:17:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:51,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:51,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:51,656 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 22:17:51,684 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 22:17:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:51,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:17:51,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-04-01 22:17:51,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:17:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681847111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:17:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:17:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:17:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671923446] [2023-04-01 22:17:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:17:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:17:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:17:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:51,881 INFO L87 Difference]: Start difference. First operand 50413 states and 63944 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 22:17:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:52,981 INFO L93 Difference]: Finished difference Result 106846 states and 136438 transitions. [2023-04-01 22:17:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:17:52,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 422 [2023-04-01 22:17:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:53,194 INFO L225 Difference]: With dead ends: 106846 [2023-04-01 22:17:53,195 INFO L226 Difference]: Without dead ends: 56627 [2023-04-01 22:17:53,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:53,279 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 174 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:53,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 172 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:17:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56627 states. [2023-04-01 22:17:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56627 to 55114. [2023-04-01 22:17:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55114 states, 53914 states have (on average 1.138702377861038) internal successors, (61392), 54540 states have internal predecessors, (61392), 287 states have call successors, (287), 287 states have call predecessors, (287), 912 states have return successors, (7037), 286 states have call predecessors, (7037), 286 states have call successors, (7037) [2023-04-01 22:17:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55114 states to 55114 states and 68716 transitions. [2023-04-01 22:17:54,691 INFO L78 Accepts]: Start accepts. Automaton has 55114 states and 68716 transitions. Word has length 422 [2023-04-01 22:17:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:54,691 INFO L495 AbstractCegarLoop]: Abstraction has 55114 states and 68716 transitions. [2023-04-01 22:17:54,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 22:17:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 55114 states and 68716 transitions. [2023-04-01 22:17:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-04-01 22:17:54,733 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:54,734 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:17:54,741 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 22:17:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:54,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:54,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash 178654678, now seen corresponding path program 1 times [2023-04-01 22:17:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484703336] [2023-04-01 22:17:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:17:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-04-01 22:17:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-04-01 22:17:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 341 proven. 93 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 22:17:55,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:17:55,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484703336] [2023-04-01 22:17:55,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484703336] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:17:55,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013181209] [2023-04-01 22:17:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:55,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:17:55,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:17:55,701 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 22:17:55,710 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 22:17:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:55,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:17:55,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:17:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 586 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-04-01 22:17:56,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:17:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 343 proven. 94 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-04-01 22:17:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013181209] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:17:56,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:17:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2023-04-01 22:17:56,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071938348] [2023-04-01 22:17:56,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:17:56,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:17:56,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:17:56,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:17:56,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:17:56,385 INFO L87 Difference]: Start difference. First operand 55114 states and 68716 transitions. Second operand has 8 states, 8 states have (on average 58.0) internal successors, (464), 6 states have internal predecessors, (464), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:17:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:17:57,792 INFO L93 Difference]: Finished difference Result 94951 states and 117785 transitions. [2023-04-01 22:17:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:17:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 58.0) internal successors, (464), 6 states have internal predecessors, (464), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 476 [2023-04-01 22:17:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:17:57,926 INFO L225 Difference]: With dead ends: 94951 [2023-04-01 22:17:57,926 INFO L226 Difference]: Without dead ends: 45071 [2023-04-01 22:17:57,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:17:57,987 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 723 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:17:57,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 117 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 22:17:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45071 states. [2023-04-01 22:17:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45071 to 42963. [2023-04-01 22:17:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42963 states, 41995 states have (on average 1.109298726038814) internal successors, (46585), 42515 states have internal predecessors, (46585), 224 states have call successors, (224), 224 states have call predecessors, (224), 743 states have return successors, (4086), 223 states have call predecessors, (4086), 223 states have call successors, (4086) [2023-04-01 22:17:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42963 states to 42963 states and 50895 transitions. [2023-04-01 22:17:59,013 INFO L78 Accepts]: Start accepts. Automaton has 42963 states and 50895 transitions. Word has length 476 [2023-04-01 22:17:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:17:59,013 INFO L495 AbstractCegarLoop]: Abstraction has 42963 states and 50895 transitions. [2023-04-01 22:17:59,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.0) internal successors, (464), 6 states have internal predecessors, (464), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:17:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 42963 states and 50895 transitions. [2023-04-01 22:17:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-04-01 22:17:59,079 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:17:59,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-04-01 22:17:59,088 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 22:17:59,285 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,SelfDestructingSolverStorable11 [2023-04-01 22:17:59,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:17:59,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:17:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1179284476, now seen corresponding path program 1 times [2023-04-01 22:17:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:17:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055054862] [2023-04-01 22:17:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:17:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:17:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:17:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:17:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-01 22:17:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-01 22:17:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-04-01 22:17:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:17:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2023-04-01 22:18:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 449 proven. 93 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-04-01 22:18:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:18:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055054862] [2023-04-01 22:18:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055054862] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:18:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727205182] [2023-04-01 22:18:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:18:00,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:18:00,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:18:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:00,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:18:00,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:18:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 777 proven. 2 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 22:18:00,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:18:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 452 proven. 94 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2023-04-01 22:18:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727205182] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:18:00,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:18:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:18:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577530695] [2023-04-01 22:18:00,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:18:00,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:18:00,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:18:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:18:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:18:00,737 INFO L87 Difference]: Start difference. First operand 42963 states and 50895 transitions. Second operand has 11 states, 11 states have (on average 48.45454545454545) internal successors, (533), 9 states have internal predecessors, (533), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:18:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:18:02,470 INFO L93 Difference]: Finished difference Result 87358 states and 104101 transitions. [2023-04-01 22:18:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 22:18:02,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.45454545454545) internal successors, (533), 9 states have internal predecessors, (533), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 571 [2023-04-01 22:18:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:18:02,594 INFO L225 Difference]: With dead ends: 87358 [2023-04-01 22:18:02,594 INFO L226 Difference]: Without dead ends: 44796 [2023-04-01 22:18:02,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1155 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:18:02,653 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2217 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:18:02,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 157 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 22:18:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44796 states. [2023-04-01 22:18:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44796 to 42135. [2023-04-01 22:18:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42135 states, 41151 states have (on average 1.1007508930524168) internal successors, (45297), 41697 states have internal predecessors, (45297), 219 states have call successors, (219), 219 states have call predecessors, (219), 764 states have return successors, (3673), 218 states have call predecessors, (3673), 218 states have call successors, (3673) [2023-04-01 22:18:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42135 states to 42135 states and 49189 transitions. [2023-04-01 22:18:03,609 INFO L78 Accepts]: Start accepts. Automaton has 42135 states and 49189 transitions. Word has length 571 [2023-04-01 22:18:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:18:03,610 INFO L495 AbstractCegarLoop]: Abstraction has 42135 states and 49189 transitions. [2023-04-01 22:18:03,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.45454545454545) internal successors, (533), 9 states have internal predecessors, (533), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:18:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42135 states and 49189 transitions. [2023-04-01 22:18:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-04-01 22:18:03,644 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:18:03,644 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-04-01 22:18:03,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:18:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:18:03,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:18:03,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:18:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -393950629, now seen corresponding path program 1 times [2023-04-01 22:18:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:18:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036147480] [2023-04-01 22:18:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:18:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:18:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:18:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-01 22:18:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-01 22:18:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 22:18:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2023-04-01 22:18:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 509 proven. 29 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2023-04-01 22:18:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:18:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036147480] [2023-04-01 22:18:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036147480] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:18:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680218267] [2023-04-01 22:18:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:05,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:05,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:18:05,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:18:05,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:18:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:05,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:18:05,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:18:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-04-01 22:18:05,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:18:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-04-01 22:18:07,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680218267] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:18:07,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:18:07,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 19 [2023-04-01 22:18:07,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637515851] [2023-04-01 22:18:07,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:18:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 22:18:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:18:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 22:18:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:18:07,643 INFO L87 Difference]: Start difference. First operand 42135 states and 49189 transitions. Second operand has 19 states, 19 states have (on average 25.0) internal successors, (475), 17 states have internal predecessors, (475), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:18:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:18:14,874 INFO L93 Difference]: Finished difference Result 78663 states and 91435 transitions. [2023-04-01 22:18:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-01 22:18:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 25.0) internal successors, (475), 17 states have internal predecessors, (475), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 572 [2023-04-01 22:18:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:18:14,934 INFO L225 Difference]: With dead ends: 78663 [2023-04-01 22:18:14,935 INFO L226 Difference]: Without dead ends: 35706 [2023-04-01 22:18:14,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1195 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1080, Invalid=4176, Unknown=0, NotChecked=0, Total=5256 [2023-04-01 22:18:14,966 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 5585 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 8356 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5585 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 9045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 8356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:18:14,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5585 Valid, 473 Invalid, 9045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 8356 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:18:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35706 states. [2023-04-01 22:18:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35706 to 32607. [2023-04-01 22:18:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32607 states, 31821 states have (on average 1.0855724207284498) internal successors, (34544), 32267 states have internal predecessors, (34544), 170 states have call successors, (170), 170 states have call predecessors, (170), 615 states have return successors, (2276), 169 states have call predecessors, (2276), 169 states have call successors, (2276) [2023-04-01 22:18:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32607 states to 32607 states and 36990 transitions. [2023-04-01 22:18:15,579 INFO L78 Accepts]: Start accepts. Automaton has 32607 states and 36990 transitions. Word has length 572 [2023-04-01 22:18:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:18:15,580 INFO L495 AbstractCegarLoop]: Abstraction has 32607 states and 36990 transitions. [2023-04-01 22:18:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.0) internal successors, (475), 17 states have internal predecessors, (475), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:18:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 32607 states and 36990 transitions. [2023-04-01 22:18:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-04-01 22:18:15,615 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:18:15,616 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-04-01 22:18:15,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 22:18:15,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:18:15,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:18:15,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:18:15,823 INFO L85 PathProgramCache]: Analyzing trace with hash -909684058, now seen corresponding path program 1 times [2023-04-01 22:18:15,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:18:15,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573530067] [2023-04-01 22:18:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:15,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:18:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:18:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:18:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:18:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:18:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2023-04-01 22:18:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-04-01 22:18:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 266 proven. 301 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-04-01 22:18:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:18:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573530067] [2023-04-01 22:18:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573530067] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:18:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972506418] [2023-04-01 22:18:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:16,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:16,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:18:16,788 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:18:16,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 22:18:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:16,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:18:16,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:18:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 533 proven. 2 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2023-04-01 22:18:17,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:18:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 533 proven. 2 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2023-04-01 22:18:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972506418] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:18:17,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:18:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:18:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742799181] [2023-04-01 22:18:17,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:18:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:18:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:18:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:18:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:18:17,703 INFO L87 Difference]: Start difference. First operand 32607 states and 36990 transitions. Second operand has 11 states, 11 states have (on average 36.45454545454545) internal successors, (401), 9 states have internal predecessors, (401), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:18:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:18:20,509 INFO L93 Difference]: Finished difference Result 76474 states and 86949 transitions. [2023-04-01 22:18:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 22:18:20,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 36.45454545454545) internal successors, (401), 9 states have internal predecessors, (401), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 641 [2023-04-01 22:18:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:18:20,584 INFO L225 Difference]: With dead ends: 76474 [2023-04-01 22:18:20,584 INFO L226 Difference]: Without dead ends: 43681 [2023-04-01 22:18:20,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1307 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-04-01 22:18:20,625 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1924 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:18:20,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 150 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 22:18:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43681 states. [2023-04-01 22:18:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43681 to 36817. [2023-04-01 22:18:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36817 states, 36029 states have (on average 1.0587304671237059) internal successors, (38145), 36431 states have internal predecessors, (38145), 193 states have call successors, (193), 193 states have call predecessors, (193), 594 states have return successors, (1869), 192 states have call predecessors, (1869), 192 states have call successors, (1869) [2023-04-01 22:18:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36817 states to 36817 states and 40207 transitions. [2023-04-01 22:18:21,382 INFO L78 Accepts]: Start accepts. Automaton has 36817 states and 40207 transitions. Word has length 641 [2023-04-01 22:18:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:18:21,383 INFO L495 AbstractCegarLoop]: Abstraction has 36817 states and 40207 transitions. [2023-04-01 22:18:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 36.45454545454545) internal successors, (401), 9 states have internal predecessors, (401), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:18:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 36817 states and 40207 transitions. [2023-04-01 22:18:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-04-01 22:18:21,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:18:21,410 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:18:21,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 22:18:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 22:18:21,618 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:18:21,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:18:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -921161224, now seen corresponding path program 1 times [2023-04-01 22:18:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:18:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606172577] [2023-04-01 22:18:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:18:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:18:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:18:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-01 22:18:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 22:18:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-04-01 22:18:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-04-01 22:18:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 603 proven. 14 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-04-01 22:18:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:18:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606172577] [2023-04-01 22:18:23,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606172577] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:18:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307904377] [2023-04-01 22:18:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:18:23,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:18:23,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 22:18:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:23,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:18:23,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:18:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 604 proven. 2 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-04-01 22:18:24,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:18:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 604 proven. 2 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-04-01 22:18:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307904377] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:18:25,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:18:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2023-04-01 22:18:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975436603] [2023-04-01 22:18:25,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:18:25,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:18:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:18:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:18:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:18:25,694 INFO L87 Difference]: Start difference. First operand 36817 states and 40207 transitions. Second operand has 17 states, 17 states have (on average 38.35294117647059) internal successors, (652), 15 states have internal predecessors, (652), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:18:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:18:33,236 INFO L93 Difference]: Finished difference Result 73712 states and 80353 transitions. [2023-04-01 22:18:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-04-01 22:18:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 38.35294117647059) internal successors, (652), 15 states have internal predecessors, (652), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 663 [2023-04-01 22:18:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:18:33,305 INFO L225 Difference]: With dead ends: 73712 [2023-04-01 22:18:33,305 INFO L226 Difference]: Without dead ends: 38643 [2023-04-01 22:18:33,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1451 GetRequests, 1378 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1035, Invalid=4515, Unknown=0, NotChecked=0, Total=5550 [2023-04-01 22:18:33,343 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2480 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 7103 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 7525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 7103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:18:33,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 390 Invalid, 7525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 7103 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 22:18:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38643 states. [2023-04-01 22:18:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38643 to 36091. [2023-04-01 22:18:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36091 states, 35299 states have (on average 1.0514745460211337) internal successors, (37116), 35713 states have internal predecessors, (37116), 189 states have call successors, (189), 189 states have call predecessors, (189), 602 states have return successors, (1625), 188 states have call predecessors, (1625), 188 states have call successors, (1625) [2023-04-01 22:18:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36091 states to 36091 states and 38930 transitions. [2023-04-01 22:18:33,897 INFO L78 Accepts]: Start accepts. Automaton has 36091 states and 38930 transitions. Word has length 663 [2023-04-01 22:18:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:18:33,898 INFO L495 AbstractCegarLoop]: Abstraction has 36091 states and 38930 transitions. [2023-04-01 22:18:33,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 38.35294117647059) internal successors, (652), 15 states have internal predecessors, (652), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:18:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 36091 states and 38930 transitions. [2023-04-01 22:18:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-04-01 22:18:33,924 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:18:33,925 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:18:33,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-04-01 22:18:34,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:34,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:18:34,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:18:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1886899052, now seen corresponding path program 1 times [2023-04-01 22:18:34,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:18:34,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983146081] [2023-04-01 22:18:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:34,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:18:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:18:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:18:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:18:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-04-01 22:18:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2023-04-01 22:18:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 7 proven. 150 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2023-04-01 22:18:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:18:36,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983146081] [2023-04-01 22:18:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983146081] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:18:36,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122821812] [2023-04-01 22:18:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:18:36,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:18:36,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:18:36,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:18:36,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 22:18:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:18:36,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-01 22:18:36,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:18:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 4 proven. 611 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2023-04-01 22:18:38,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:18:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 692 proven. 210 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-04-01 22:18:49,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122821812] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:18:49,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:18:49,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 10] total 34 [2023-04-01 22:18:49,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778639665] [2023-04-01 22:18:49,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:18:49,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 22:18:49,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:18:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 22:18:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 22:18:49,504 INFO L87 Difference]: Start difference. First operand 36091 states and 38930 transitions. Second operand has 34 states, 34 states have (on average 29.676470588235293) internal successors, (1009), 32 states have internal predecessors, (1009), 14 states have call successors, (19), 12 states have call predecessors, (19), 14 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2023-04-01 22:19:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:03,945 INFO L93 Difference]: Finished difference Result 97700 states and 106442 transitions. [2023-04-01 22:19:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-04-01 22:19:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 29.676470588235293) internal successors, (1009), 32 states have internal predecessors, (1009), 14 states have call successors, (19), 12 states have call predecessors, (19), 14 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) Word has length 694 [2023-04-01 22:19:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:04,077 INFO L225 Difference]: With dead ends: 97700 [2023-04-01 22:19:04,077 INFO L226 Difference]: Without dead ends: 65079 [2023-04-01 22:19:04,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6961 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3139, Invalid=15493, Unknown=0, NotChecked=0, Total=18632 [2023-04-01 22:19:04,103 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 17893 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 13332 mSolverCounterSat, 2102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17893 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 15434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2102 IncrementalHoareTripleChecker+Valid, 13332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:04,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17893 Valid, 705 Invalid, 15434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2102 Valid, 13332 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-04-01 22:19:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65079 states. [2023-04-01 22:19:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65079 to 59487. [2023-04-01 22:19:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59487 states, 58170 states have (on average 1.0487020801100224) internal successors, (61003), 58867 states have internal predecessors, (61003), 310 states have call successors, (310), 310 states have call predecessors, (310), 1006 states have return successors, (2475), 309 states have call predecessors, (2475), 309 states have call successors, (2475) [2023-04-01 22:19:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59487 states to 59487 states and 63788 transitions. [2023-04-01 22:19:05,245 INFO L78 Accepts]: Start accepts. Automaton has 59487 states and 63788 transitions. Word has length 694 [2023-04-01 22:19:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:05,246 INFO L495 AbstractCegarLoop]: Abstraction has 59487 states and 63788 transitions. [2023-04-01 22:19:05,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 29.676470588235293) internal successors, (1009), 32 states have internal predecessors, (1009), 14 states have call successors, (19), 12 states have call predecessors, (19), 14 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2023-04-01 22:19:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 59487 states and 63788 transitions. [2023-04-01 22:19:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-04-01 22:19:05,295 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:05,296 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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, 1, 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 22:19:05,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 22:19:05,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 22:19:05,496 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:05,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1654975880, now seen corresponding path program 1 times [2023-04-01 22:19:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737614958] [2023-04-01 22:19:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-01 22:19:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 22:19:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-04-01 22:19:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-04-01 22:19:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2023-04-01 22:19:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 223 proven. 864 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2023-04-01 22:19:07,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:07,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737614958] [2023-04-01 22:19:07,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737614958] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:07,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687923813] [2023-04-01 22:19:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:07,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:07,134 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:19:07,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 22:19:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:07,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 22:19:07,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1081 proven. 99 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-04-01 22:19:07,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:19:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1081 proven. 4 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-04-01 22:19:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687923813] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:19:10,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:19:10,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 23 [2023-04-01 22:19:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204136953] [2023-04-01 22:19:10,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:19:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 22:19:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 22:19:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:19:10,356 INFO L87 Difference]: Start difference. First operand 59487 states and 63788 transitions. Second operand has 23 states, 23 states have (on average 34.26086956521739) internal successors, (788), 21 states have internal predecessors, (788), 9 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 22:19:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:17,866 INFO L93 Difference]: Finished difference Result 116845 states and 125331 transitions. [2023-04-01 22:19:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-04-01 22:19:17,867 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 34.26086956521739) internal successors, (788), 21 states have internal predecessors, (788), 9 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) Word has length 831 [2023-04-01 22:19:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:17,867 INFO L225 Difference]: With dead ends: 116845 [2023-04-01 22:19:17,867 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:19:17,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1709 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1087, Invalid=5555, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 22:19:17,932 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 8485 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 8165 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8488 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 9237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 8165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:17,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8488 Valid, 447 Invalid, 9237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 8165 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:19:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:19:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:19:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:19:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:19:17,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 831 [2023-04-01 22:19:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:17,933 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:19:17,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 34.26086956521739) internal successors, (788), 21 states have internal predecessors, (788), 9 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 22:19:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:19:17,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:19:17,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:19:17,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 22:19:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 22:19:18,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.