/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:19:29,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:19:29,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:19:29,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:19:29,084 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 22:19:29,109 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:19:29,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:19:29,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:19:29,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:19:29,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:19:29,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:19:29,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:19:29,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:19:29,111 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:19:29,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:19:29,111 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:19:29,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:19:29,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:19:29,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:19:29,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:19:29,114 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:19:29,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:19:29,114 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:19:29,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:19:29,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:19:29,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:19:29,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:19:29,324 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:19:29,325 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:19:29,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label45.c [2023-04-01 22:19:30,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:19:30,536 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:19:30,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label45.c [2023-04-01 22:19:30,547 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c945d68/dacdcf10f3574d8d93f1d642c56193e8/FLAGae2b7feb0 [2023-04-01 22:19:30,556 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c945d68/dacdcf10f3574d8d93f1d642c56193e8 [2023-04-01 22:19:30,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:19:30,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:19:30,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:19:30,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:19:30,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:19:30,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:30,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ed7a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30, skipping insertion in model container [2023-04-01 22:19:30,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:30,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:19:30,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:19:30,697 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_label45.c[4714,4727] [2023-04-01 22:19:30,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:19:30,849 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:19:30,862 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_label45.c[4714,4727] [2023-04-01 22:19:30,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:19:30,948 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:19:30,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30 WrapperNode [2023-04-01 22:19:30,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:19:30,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:19:30,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:19:30,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:19:30,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:30,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:30,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:30,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:19:31,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:19:31,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:19:31,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:19:31,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (1/1) ... [2023-04-01 22:19:31,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:19:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:31,106 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 22:19:31,123 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 22:19:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:19:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:19:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:19:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:19:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:19:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:19:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:19:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:19:31,208 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:19:31,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:19:32,220 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:19:32,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:19:32,227 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:19:32,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:19:32 BoogieIcfgContainer [2023-04-01 22:19:32,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:19:32,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:19:32,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:19:32,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:19:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:19:30" (1/3) ... [2023-04-01 22:19:32,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4aa05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:19:32, skipping insertion in model container [2023-04-01 22:19:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:19:30" (2/3) ... [2023-04-01 22:19:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4aa05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:19:32, skipping insertion in model container [2023-04-01 22:19:32,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:19:32" (3/3) ... [2023-04-01 22:19:32,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2023-04-01 22:19:32,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:19:32,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:19:32,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:19:32,285 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;@10d2046c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:19:32,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:19:32,312 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 22:19:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 22:19:32,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:32,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:19:32,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:32,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash 798626969, now seen corresponding path program 1 times [2023-04-01 22:19:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224945019] [2023-04-01 22:19:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:32,669 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 22:19:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:32,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224945019] [2023-04-01 22:19:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224945019] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:32,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:19:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:19:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999700531] [2023-04-01 22:19:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:32,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:19:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:19:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:19:32,699 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 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 22:19:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:33,920 INFO L93 Difference]: Finished difference Result 806 states and 1404 transitions. [2023-04-01 22:19:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:19:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 38 [2023-04-01 22:19:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:33,931 INFO L225 Difference]: With dead ends: 806 [2023-04-01 22:19:33,931 INFO L226 Difference]: Without dead ends: 434 [2023-04-01 22:19:33,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:19:33,938 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 674 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:33,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 56 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 22:19:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-04-01 22:19:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2023-04-01 22:19:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 418 states have (on average 1.4497607655502391) internal successors, (606), 420 states have internal predecessors, (606), 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 22:19:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 617 transitions. [2023-04-01 22:19:33,981 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 617 transitions. Word has length 38 [2023-04-01 22:19:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:33,982 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 617 transitions. [2023-04-01 22:19:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 22:19:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 617 transitions. [2023-04-01 22:19:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 22:19:33,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:33,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:19:33,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:33,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash 149310612, now seen corresponding path program 1 times [2023-04-01 22:19:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:33,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661152752] [2023-04-01 22:19:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661152752] [2023-04-01 22:19:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661152752] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:19:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:19:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921246179] [2023-04-01 22:19:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:19:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:19:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:19:34,423 INFO L87 Difference]: Start difference. First operand 428 states and 617 transitions. Second operand has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 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 22:19:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:36,177 INFO L93 Difference]: Finished difference Result 1661 states and 2472 transitions. [2023-04-01 22:19:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:19:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 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 110 [2023-04-01 22:19:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:36,182 INFO L225 Difference]: With dead ends: 1661 [2023-04-01 22:19:36,182 INFO L226 Difference]: Without dead ends: 1239 [2023-04-01 22:19:36,183 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 22:19:36,184 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1655 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:36,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 154 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 22:19:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-04-01 22:19:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1203. [2023-04-01 22:19:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1178 states have (on average 1.3845500848896435) internal successors, (1631), 1187 states have internal predecessors, (1631), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (49), 7 states have call predecessors, (49), 7 states have call successors, (49) [2023-04-01 22:19:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1688 transitions. [2023-04-01 22:19:36,215 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1688 transitions. Word has length 110 [2023-04-01 22:19:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:36,215 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1688 transitions. [2023-04-01 22:19:36,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 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 22:19:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1688 transitions. [2023-04-01 22:19:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-01 22:19:36,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:36,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:19:36,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:36,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1222149039, now seen corresponding path program 1 times [2023-04-01 22:19:36,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:36,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109793352] [2023-04-01 22:19:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:36,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109793352] [2023-04-01 22:19:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109793352] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390234985] [2023-04-01 22:19:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:36,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:36,386 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 22:19:36,387 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 22:19:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:36,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:19:36,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:36,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:19:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390234985] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:36,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:19:36,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:19:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49985937] [2023-04-01 22:19:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:36,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:19:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:19:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:19:36,572 INFO L87 Difference]: Start difference. First operand 1203 states and 1688 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 22:19:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:37,161 INFO L93 Difference]: Finished difference Result 2791 states and 3917 transitions. [2023-04-01 22:19:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:19:37,161 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 22:19:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:37,166 INFO L225 Difference]: With dead ends: 2791 [2023-04-01 22:19:37,166 INFO L226 Difference]: Without dead ends: 1594 [2023-04-01 22:19:37,167 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 22:19:37,168 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 168 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:37,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 369 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:19:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-04-01 22:19:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1585. [2023-04-01 22:19:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1553 states have (on average 1.338055376690277) internal successors, (2078), 1565 states have internal predecessors, (2078), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-04-01 22:19:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2163 transitions. [2023-04-01 22:19:37,194 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2163 transitions. Word has length 111 [2023-04-01 22:19:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:37,194 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2163 transitions. [2023-04-01 22:19:37,195 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 22:19:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2163 transitions. [2023-04-01 22:19:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 22:19:37,196 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:37,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:37,203 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 22:19:37,400 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 22:19:37,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:37,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1576458832, now seen corresponding path program 1 times [2023-04-01 22:19:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439964866] [2023-04-01 22:19:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:37,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439964866] [2023-04-01 22:19:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439964866] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:37,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190678864] [2023-04-01 22:19:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:37,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:37,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:37,588 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 22:19:37,613 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 22:19:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:37,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:19:37,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:37,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:19:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190678864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:19:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:19:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567181519] [2023-04-01 22:19:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:19:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:19:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:19:37,724 INFO L87 Difference]: Start difference. First operand 1585 states and 2163 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 22:19:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:38,384 INFO L93 Difference]: Finished difference Result 3177 states and 4360 transitions. [2023-04-01 22:19:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:19:38,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 112 [2023-04-01 22:19:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:38,390 INFO L225 Difference]: With dead ends: 3177 [2023-04-01 22:19:38,390 INFO L226 Difference]: Without dead ends: 1598 [2023-04-01 22:19:38,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 22:19:38,393 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 185 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:38,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 366 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:19:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-04-01 22:19:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1585. [2023-04-01 22:19:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1553 states have (on average 1.3135866065679331) internal successors, (2040), 1565 states have internal predecessors, (2040), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-04-01 22:19:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2125 transitions. [2023-04-01 22:19:38,416 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2125 transitions. Word has length 112 [2023-04-01 22:19:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:38,417 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2125 transitions. [2023-04-01 22:19:38,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 22:19:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2125 transitions. [2023-04-01 22:19:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 22:19:38,419 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:38,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:38,426 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 22:19:38,624 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 22:19:38,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:38,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2116862720, now seen corresponding path program 1 times [2023-04-01 22:19:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:38,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044084756] [2023-04-01 22:19:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:38,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:38,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044084756] [2023-04-01 22:19:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044084756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:38,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:19:38,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:19:38,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5033610] [2023-04-01 22:19:38,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:38,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:19:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:19:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:19:38,917 INFO L87 Difference]: Start difference. First operand 1585 states and 2125 transitions. Second operand has 7 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 22:19:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:40,360 INFO L93 Difference]: Finished difference Result 4605 states and 6486 transitions. [2023-04-01 22:19:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:19:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 136 [2023-04-01 22:19:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:40,371 INFO L225 Difference]: With dead ends: 4605 [2023-04-01 22:19:40,371 INFO L226 Difference]: Without dead ends: 3026 [2023-04-01 22:19:40,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:19:40,376 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 717 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 145 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 22:19:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-04-01 22:19:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2793. [2023-04-01 22:19:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2713 states have (on average 1.23958717287136) internal successors, (3363), 2761 states have internal predecessors, (3363), 16 states have call successors, (16), 16 states have call predecessors, (16), 63 states have return successors, (256), 15 states have call predecessors, (256), 15 states have call successors, (256) [2023-04-01 22:19:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3635 transitions. [2023-04-01 22:19:40,445 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3635 transitions. Word has length 136 [2023-04-01 22:19:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:40,445 INFO L495 AbstractCegarLoop]: Abstraction has 2793 states and 3635 transitions. [2023-04-01 22:19:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 22:19:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3635 transitions. [2023-04-01 22:19:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-04-01 22:19:40,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:40,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:19:40,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:19:40,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:40,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash -762841602, now seen corresponding path program 1 times [2023-04-01 22:19:40,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:40,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737511913] [2023-04-01 22:19:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-01 22:19:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:19:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737511913] [2023-04-01 22:19:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737511913] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690309919] [2023-04-01 22:19:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:40,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:40,653 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 22:19:40,681 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 22:19:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:40,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:19:40,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-01 22:19:40,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:19:40,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690309919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:40,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:19:40,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:19:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858826971] [2023-04-01 22:19:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:19:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:19:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:19:40,812 INFO L87 Difference]: Start difference. First operand 2793 states and 3635 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 22:19:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:41,402 INFO L93 Difference]: Finished difference Result 6930 states and 9331 transitions. [2023-04-01 22:19:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:19:41,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 183 [2023-04-01 22:19:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:41,414 INFO L225 Difference]: With dead ends: 6930 [2023-04-01 22:19:41,414 INFO L226 Difference]: Without dead ends: 4143 [2023-04-01 22:19:41,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:19:41,419 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 170 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:41,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 377 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 22:19:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-04-01 22:19:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3951. [2023-04-01 22:19:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3844 states have (on average 1.223465140478668) internal successors, (4703), 3907 states have internal predecessors, (4703), 22 states have call successors, (22), 22 states have call predecessors, (22), 84 states have return successors, (447), 21 states have call predecessors, (447), 21 states have call successors, (447) [2023-04-01 22:19:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5172 transitions. [2023-04-01 22:19:41,500 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5172 transitions. Word has length 183 [2023-04-01 22:19:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:41,501 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5172 transitions. [2023-04-01 22:19:41,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 22:19:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5172 transitions. [2023-04-01 22:19:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-04-01 22:19:41,505 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:41,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:19:41,527 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 22:19:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:41,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:41,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1387778432, now seen corresponding path program 1 times [2023-04-01 22:19:41,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:41,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858678986] [2023-04-01 22:19:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-01 22:19:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 7 proven. 61 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-04-01 22:19:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858678986] [2023-04-01 22:19:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858678986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780716471] [2023-04-01 22:19:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:42,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:42,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:42,261 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 22:19:42,264 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 22:19:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:42,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:19:42,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-01 22:19:42,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:19:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780716471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:19:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-04-01 22:19:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695940837] [2023-04-01 22:19:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:19:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:19:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:19:42,625 INFO L87 Difference]: Start difference. First operand 3951 states and 5172 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:19:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:43,480 INFO L93 Difference]: Finished difference Result 7963 states and 10542 transitions. [2023-04-01 22:19:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:19:43,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 205 [2023-04-01 22:19:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:43,492 INFO L225 Difference]: With dead ends: 7963 [2023-04-01 22:19:43,492 INFO L226 Difference]: Without dead ends: 4018 [2023-04-01 22:19:43,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:19:43,498 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 492 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 122 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 22:19:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2023-04-01 22:19:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3985. [2023-04-01 22:19:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3861 states have (on average 1.2193732193732194) internal successors, (4708), 3941 states have internal predecessors, (4708), 22 states have call successors, (22), 22 states have call predecessors, (22), 101 states have return successors, (492), 21 states have call predecessors, (492), 21 states have call successors, (492) [2023-04-01 22:19:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5222 transitions. [2023-04-01 22:19:43,561 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5222 transitions. Word has length 205 [2023-04-01 22:19:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:43,562 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 5222 transitions. [2023-04-01 22:19:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:19:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5222 transitions. [2023-04-01 22:19:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-04-01 22:19:43,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:43,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:19:43,589 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 22:19:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:43,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:43,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1356611363, now seen corresponding path program 1 times [2023-04-01 22:19:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709368204] [2023-04-01 22:19:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-01 22:19:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:19:44,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:44,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709368204] [2023-04-01 22:19:44,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709368204] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:44,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591293586] [2023-04-01 22:19:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:44,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:44,267 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 22:19:44,304 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 22:19:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:44,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:19:44,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 22:19:44,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:19:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 22:19:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591293586] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:19:45,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 16 [2023-04-01 22:19:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653808128] [2023-04-01 22:19:45,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:45,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:19:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:19:45,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:19:45,899 INFO L87 Difference]: Start difference. First operand 3985 states and 5222 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 22:19:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:47,185 INFO L93 Difference]: Finished difference Result 13171 states and 18042 transitions. [2023-04-01 22:19:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:19:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 248 [2023-04-01 22:19:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:47,218 INFO L225 Difference]: With dead ends: 13171 [2023-04-01 22:19:47,219 INFO L226 Difference]: Without dead ends: 9192 [2023-04-01 22:19:47,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 493 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:19:47,228 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 953 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:47,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 91 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 22:19:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2023-04-01 22:19:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 9000. [2023-04-01 22:19:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9000 states, 8767 states have (on average 1.2266453747005817) internal successors, (10754), 8904 states have internal predecessors, (10754), 48 states have call successors, (48), 48 states have call predecessors, (48), 184 states have return successors, (1488), 47 states have call predecessors, (1488), 47 states have call successors, (1488) [2023-04-01 22:19:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 12290 transitions. [2023-04-01 22:19:47,441 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 12290 transitions. Word has length 248 [2023-04-01 22:19:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:47,442 INFO L495 AbstractCegarLoop]: Abstraction has 9000 states and 12290 transitions. [2023-04-01 22:19:47,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 22:19:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 12290 transitions. [2023-04-01 22:19:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-04-01 22:19:47,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:47,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:19:47,469 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 22:19:47,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:47,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:47,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash -720433728, now seen corresponding path program 1 times [2023-04-01 22:19:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943042014] [2023-04-01 22:19:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:48,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:19:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 61 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 22:19:48,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:48,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943042014] [2023-04-01 22:19:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943042014] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409097755] [2023-04-01 22:19:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:48,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:48,569 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 22:19:48,605 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 22:19:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:48,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 22:19:48,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 22:19:49,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:19:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 65 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:19:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409097755] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:19:50,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:19:50,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-04-01 22:19:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764435887] [2023-04-01 22:19:50,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:19:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:19:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:19:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:19:50,650 INFO L87 Difference]: Start difference. First operand 9000 states and 12290 transitions. Second operand has 21 states, 21 states have (on average 35.857142857142854) internal successors, (753), 18 states have internal predecessors, (753), 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 22:19:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:55,261 INFO L93 Difference]: Finished difference Result 36022 states and 53595 transitions. [2023-04-01 22:19:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-01 22:19:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 35.857142857142854) internal successors, (753), 18 states have internal predecessors, (753), 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 344 [2023-04-01 22:19:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:55,347 INFO L225 Difference]: With dead ends: 36022 [2023-04-01 22:19:55,348 INFO L226 Difference]: Without dead ends: 27028 [2023-04-01 22:19:55,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=873, Invalid=2433, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 22:19:55,372 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3516 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 4580 mSolverCounterSat, 1132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3516 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1132 IncrementalHoareTripleChecker+Valid, 4580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:55,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3516 Valid, 335 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1132 Valid, 4580 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 22:19:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2023-04-01 22:19:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 25590. [2023-04-01 22:19:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25590 states, 25011 states have (on average 1.2058694174563191) internal successors, (30160), 25322 states have internal predecessors, (30160), 134 states have call successors, (134), 134 states have call predecessors, (134), 444 states have return successors, (4566), 133 states have call predecessors, (4566), 133 states have call successors, (4566) [2023-04-01 22:19:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25590 states to 25590 states and 34860 transitions. [2023-04-01 22:19:56,050 INFO L78 Accepts]: Start accepts. Automaton has 25590 states and 34860 transitions. Word has length 344 [2023-04-01 22:19:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:56,050 INFO L495 AbstractCegarLoop]: Abstraction has 25590 states and 34860 transitions. [2023-04-01 22:19:56,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 35.857142857142854) internal successors, (753), 18 states have internal predecessors, (753), 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 22:19:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 25590 states and 34860 transitions. [2023-04-01 22:19:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-04-01 22:19:56,073 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:56,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:56,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 22:19:56,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:56,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:56,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1451376461, now seen corresponding path program 1 times [2023-04-01 22:19:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182791195] [2023-04-01 22:19:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:19:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-01 22:19:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-04-01 22:19:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182791195] [2023-04-01 22:19:56,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182791195] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132377969] [2023-04-01 22:19:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:56,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:56,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:56,645 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 22:19:56,663 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 22:19:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:56,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:19:56,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:19:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 22:19:56,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:19:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132377969] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:19:56,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:19:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:19:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676455644] [2023-04-01 22:19:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:19:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:19:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:19:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:19:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:19:56,856 INFO L87 Difference]: Start difference. First operand 25590 states and 34860 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:19:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:19:57,654 INFO L93 Difference]: Finished difference Result 52614 states and 72164 transitions. [2023-04-01 22:19:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:19:57,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 424 [2023-04-01 22:19:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:19:57,727 INFO L225 Difference]: With dead ends: 52614 [2023-04-01 22:19:57,727 INFO L226 Difference]: Without dead ends: 27408 [2023-04-01 22:19:57,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:19:57,891 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 246 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:19:57,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 161 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 22:19:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2023-04-01 22:19:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 24009. [2023-04-01 22:19:58,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24009 states, 23471 states have (on average 1.1722551233437006) internal successors, (27514), 23757 states have internal predecessors, (27514), 126 states have call successors, (126), 126 states have call predecessors, (126), 411 states have return successors, (3449), 125 states have call predecessors, (3449), 125 states have call successors, (3449) [2023-04-01 22:19:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24009 states to 24009 states and 31089 transitions. [2023-04-01 22:19:58,335 INFO L78 Accepts]: Start accepts. Automaton has 24009 states and 31089 transitions. Word has length 424 [2023-04-01 22:19:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:19:58,335 INFO L495 AbstractCegarLoop]: Abstraction has 24009 states and 31089 transitions. [2023-04-01 22:19:58,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:19:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24009 states and 31089 transitions. [2023-04-01 22:19:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-04-01 22:19:58,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:19:58,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2023-04-01 22:19:58,371 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 22:19:58,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:58,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:19:58,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:19:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -947642422, now seen corresponding path program 1 times [2023-04-01 22:19:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:19:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799676178] [2023-04-01 22:19:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:19:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:19:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:19:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:19:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-04-01 22:19:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 22:19:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 386 proven. 21 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 22:19:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:19:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799676178] [2023-04-01 22:19:59,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799676178] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:19:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048293942] [2023-04-01 22:19:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:19:59,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:19:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:19:59,773 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 22:19:59,785 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 22:19:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:19:59,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:19:59,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:20:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-04-01 22:20:00,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:20:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-04-01 22:20:00,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048293942] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:20:00,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:20:00,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 22:20:00,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220050710] [2023-04-01 22:20:00,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:20:00,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:20:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:20:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:20:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:20:00,743 INFO L87 Difference]: Start difference. First operand 24009 states and 31089 transitions. Second operand has 15 states, 15 states have (on average 30.8) internal successors, (462), 13 states have internal predecessors, (462), 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 22:20:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:20:06,814 INFO L93 Difference]: Finished difference Result 46923 states and 60639 transitions. [2023-04-01 22:20:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-04-01 22:20:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 30.8) internal successors, (462), 13 states have internal predecessors, (462), 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 466 [2023-04-01 22:20:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:20:06,851 INFO L225 Difference]: With dead ends: 46923 [2023-04-01 22:20:06,851 INFO L226 Difference]: Without dead ends: 21564 [2023-04-01 22:20:06,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=844, Invalid=4412, Unknown=0, NotChecked=0, Total=5256 [2023-04-01 22:20:06,882 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 5151 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 6789 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5151 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 7638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 6789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:20:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5151 Valid, 314 Invalid, 7638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 6789 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 22:20:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21564 states. [2023-04-01 22:20:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21564 to 16991. [2023-04-01 22:20:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16991 states, 16628 states have (on average 1.0930358431561222) internal successors, (18175), 16811 states have internal predecessors, (18175), 90 states have call successors, (90), 90 states have call predecessors, (90), 272 states have return successors, (1305), 89 states have call predecessors, (1305), 89 states have call successors, (1305) [2023-04-01 22:20:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16991 states to 16991 states and 19570 transitions. [2023-04-01 22:20:07,242 INFO L78 Accepts]: Start accepts. Automaton has 16991 states and 19570 transitions. Word has length 466 [2023-04-01 22:20:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:20:07,242 INFO L495 AbstractCegarLoop]: Abstraction has 16991 states and 19570 transitions. [2023-04-01 22:20:07,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.8) internal successors, (462), 13 states have internal predecessors, (462), 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 22:20:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16991 states and 19570 transitions. [2023-04-01 22:20:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2023-04-01 22:20:07,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:20:07,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:07,279 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 22:20:07,464 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,SelfDestructingSolverStorable10 [2023-04-01 22:20:07,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:20:07,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:20:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1013642555, now seen corresponding path program 1 times [2023-04-01 22:20:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:20:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636734203] [2023-04-01 22:20:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:20:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:20:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:20:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-01 22:20:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 22:20:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-04-01 22:20:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 331 proven. 99 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-04-01 22:20:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:20:07,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636734203] [2023-04-01 22:20:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636734203] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:20:07,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379524503] [2023-04-01 22:20:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:07,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:20:07,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:20:07,867 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 22:20:07,869 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 22:20:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:08,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:20:08,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:20:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 640 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-04-01 22:20:08,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:20:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 333 proven. 100 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-04-01 22:20:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379524503] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:20:08,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:20:08,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:20:08,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437717671] [2023-04-01 22:20:08,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:20:08,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:20:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:20:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:20:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:20:08,516 INFO L87 Difference]: Start difference. First operand 16991 states and 19570 transitions. Second operand has 11 states, 11 states have (on average 59.27272727272727) internal successors, (652), 9 states have internal predecessors, (652), 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 22:20:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:20:09,990 INFO L93 Difference]: Finished difference Result 37959 states and 43732 transitions. [2023-04-01 22:20:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:20:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 59.27272727272727) internal successors, (652), 9 states have internal predecessors, (652), 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 562 [2023-04-01 22:20:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:20:10,026 INFO L225 Difference]: With dead ends: 37959 [2023-04-01 22:20:10,026 INFO L226 Difference]: Without dead ends: 20206 [2023-04-01 22:20:10,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 1136 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:20:10,046 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1314 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:20:10,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 165 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 22:20:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2023-04-01 22:20:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 18584. [2023-04-01 22:20:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18584 states, 18172 states have (on average 1.0835351089588379) internal successors, (19690), 18388 states have internal predecessors, (19690), 98 states have call successors, (98), 98 states have call predecessors, (98), 313 states have return successors, (1273), 97 states have call predecessors, (1273), 97 states have call successors, (1273) [2023-04-01 22:20:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18584 states to 18584 states and 21061 transitions. [2023-04-01 22:20:10,289 INFO L78 Accepts]: Start accepts. Automaton has 18584 states and 21061 transitions. Word has length 562 [2023-04-01 22:20:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:20:10,290 INFO L495 AbstractCegarLoop]: Abstraction has 18584 states and 21061 transitions. [2023-04-01 22:20:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 59.27272727272727) internal successors, (652), 9 states have internal predecessors, (652), 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 22:20:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states and 21061 transitions. [2023-04-01 22:20:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-04-01 22:20:10,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:20:10,313 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, 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, 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 22:20:10,318 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 22:20:10,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:20:10,518 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:20:10,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:20:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash 280274418, now seen corresponding path program 1 times [2023-04-01 22:20:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:20:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901170624] [2023-04-01 22:20:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:20:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:20:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:20:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-01 22:20:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 22:20:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-04-01 22:20:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-04-01 22:20:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 608 proven. 14 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-04-01 22:20:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:20:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901170624] [2023-04-01 22:20:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901170624] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:20:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624434175] [2023-04-01 22:20:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:12,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:20:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:20:12,159 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 22:20:12,163 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 22:20:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:12,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:20:12,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:20:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 609 proven. 2 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-04-01 22:20:12,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:20:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 609 proven. 2 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-04-01 22:20:13,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624434175] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:20:13,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:20:13,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2023-04-01 22:20:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940771549] [2023-04-01 22:20:13,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:20:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:20:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:20:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:20:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:20:13,959 INFO L87 Difference]: Start difference. First operand 18584 states and 21061 transitions. Second operand has 17 states, 17 states have (on average 38.411764705882355) internal successors, (653), 15 states have internal predecessors, (653), 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 22:20:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:20:21,078 INFO L93 Difference]: Finished difference Result 38804 states and 43968 transitions. [2023-04-01 22:20:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-04-01 22:20:21,078 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 38.411764705882355) internal successors, (653), 15 states have internal predecessors, (653), 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 664 [2023-04-01 22:20:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:20:21,111 INFO L225 Difference]: With dead ends: 38804 [2023-04-01 22:20:21,111 INFO L226 Difference]: Without dead ends: 20412 [2023-04-01 22:20:21,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1457 GetRequests, 1381 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1124, Invalid=4882, Unknown=0, NotChecked=0, Total=6006 [2023-04-01 22:20:21,130 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2812 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 7438 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 7890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 7438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:20:21,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 492 Invalid, 7890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 7438 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 22:20:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20412 states. [2023-04-01 22:20:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20412 to 19597. [2023-04-01 22:20:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19597 states, 19141 states have (on average 1.0708426936941644) internal successors, (20497), 19391 states have internal predecessors, (20497), 103 states have call successors, (103), 103 states have call predecessors, (103), 352 states have return successors, (1144), 102 states have call predecessors, (1144), 102 states have call successors, (1144) [2023-04-01 22:20:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19597 states to 19597 states and 21744 transitions. [2023-04-01 22:20:21,385 INFO L78 Accepts]: Start accepts. Automaton has 19597 states and 21744 transitions. Word has length 664 [2023-04-01 22:20:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:20:21,386 INFO L495 AbstractCegarLoop]: Abstraction has 19597 states and 21744 transitions. [2023-04-01 22:20:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 38.411764705882355) internal successors, (653), 15 states have internal predecessors, (653), 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 22:20:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 19597 states and 21744 transitions. [2023-04-01 22:20:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-04-01 22:20:21,404 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:20:21,405 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 22:20:21,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-01 22:20:21,610 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,SelfDestructingSolverStorable12 [2023-04-01 22:20:21,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:20:21,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:20:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash -923170823, now seen corresponding path program 1 times [2023-04-01 22:20:21,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:20:21,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122796048] [2023-04-01 22:20:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:21,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:20:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:20:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:20:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-01 22:20:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-04-01 22:20:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2023-04-01 22:20:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2023-04-01 22:20:23,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:20:23,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122796048] [2023-04-01 22:20:23,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122796048] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:20:23,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898013448] [2023-04-01 22:20:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:20:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:20:23,309 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 22:20:23,313 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 22:20:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:23,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-01 22:20:23,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:20:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 4 proven. 615 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2023-04-01 22:20:24,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:20:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 695 proven. 211 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-04-01 22:20:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898013448] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:20:31,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:20:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 10] total 34 [2023-04-01 22:20:31,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506922048] [2023-04-01 22:20:31,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:20:31,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 22:20:31,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:20:31,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 22:20:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 22:20:31,730 INFO L87 Difference]: Start difference. First operand 19597 states and 21744 transitions. Second operand has 34 states, 34 states have (on average 29.764705882352942) internal successors, (1012), 32 states have internal predecessors, (1012), 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 22:20:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:20:43,743 INFO L93 Difference]: Finished difference Result 61680 states and 69260 transitions. [2023-04-01 22:20:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-04-01 22:20:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 29.764705882352942) internal successors, (1012), 32 states have internal predecessors, (1012), 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 695 [2023-04-01 22:20:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:20:43,819 INFO L225 Difference]: With dead ends: 61680 [2023-04-01 22:20:43,819 INFO L226 Difference]: Without dead ends: 42467 [2023-04-01 22:20:43,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1591 GetRequests, 1455 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3118, Invalid=15788, Unknown=0, NotChecked=0, Total=18906 [2023-04-01 22:20:43,844 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16174 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 12084 mSolverCounterSat, 1749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16174 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 13833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1749 IncrementalHoareTripleChecker+Valid, 12084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:20:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16174 Valid, 803 Invalid, 13833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1749 Valid, 12084 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-04-01 22:20:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42467 states. [2023-04-01 22:20:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42467 to 36843. [2023-04-01 22:20:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36843 states, 35993 states have (on average 1.0655683049481843) internal successors, (38353), 36459 states have internal predecessors, (38353), 192 states have call successors, (192), 192 states have call predecessors, (192), 657 states have return successors, (1940), 191 states have call predecessors, (1940), 191 states have call successors, (1940) [2023-04-01 22:20:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36843 states to 36843 states and 40485 transitions. [2023-04-01 22:20:44,441 INFO L78 Accepts]: Start accepts. Automaton has 36843 states and 40485 transitions. Word has length 695 [2023-04-01 22:20:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:20:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 36843 states and 40485 transitions. [2023-04-01 22:20:44,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 29.764705882352942) internal successors, (1012), 32 states have internal predecessors, (1012), 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 22:20:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 36843 states and 40485 transitions. [2023-04-01 22:20:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2023-04-01 22:20:44,478 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:20:44,478 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, 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, 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 22:20:44,486 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 22:20:44,686 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,SelfDestructingSolverStorable13 [2023-04-01 22:20:44,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:20:44,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:20:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 282379347, now seen corresponding path program 1 times [2023-04-01 22:20:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:20:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778983257] [2023-04-01 22:20:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:20:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:20:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:20:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-01 22:20:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 22:20:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-04-01 22:20:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-04-01 22:20:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2023-04-01 22:20:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 229 proven. 864 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2023-04-01 22:20:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:20:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778983257] [2023-04-01 22:20:45,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778983257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:20:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593698822] [2023-04-01 22:20:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:20:45,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:20:45,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:20:45,795 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 22:20:45,797 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 22:20:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:20:45,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-01 22:20:46,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:20:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 1084 proven. 102 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-04-01 22:20:46,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:20:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 1087 proven. 4 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-04-01 22:20:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593698822] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:20:48,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:20:48,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 23 [2023-04-01 22:20:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806356577] [2023-04-01 22:20:48,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:20:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 22:20:48,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:20:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 22:20:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:20:48,605 INFO L87 Difference]: Start difference. First operand 36843 states and 40485 transitions. Second operand has 23 states, 23 states have (on average 34.391304347826086) internal successors, (791), 21 states have internal predecessors, (791), 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 22:20:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:20:55,648 INFO L93 Difference]: Finished difference Result 82038 states and 90272 transitions. [2023-04-01 22:20:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-04-01 22:20:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 34.391304347826086) internal successors, (791), 21 states have internal predecessors, (791), 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 832 [2023-04-01 22:20:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:20:55,649 INFO L225 Difference]: With dead ends: 82038 [2023-04-01 22:20:55,649 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:20:55,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1796 GetRequests, 1712 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1148, Invalid=5992, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 22:20:55,708 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 8649 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 8435 mSolverCounterSat, 1372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8652 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 9807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1372 IncrementalHoareTripleChecker+Valid, 8435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:20:55,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8652 Valid, 426 Invalid, 9807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1372 Valid, 8435 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:20:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:20:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:20:55,709 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 22:20:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:20:55,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 832 [2023-04-01 22:20:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:20:55,709 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:20:55,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 34.391304347826086) internal successors, (791), 21 states have internal predecessors, (791), 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 22:20:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:20:55,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:20:55,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:20:55,719 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 22:20:55,917 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,SelfDestructingSolverStorable14 [2023-04-01 22:20:55,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 22:22:42,905 WARN L223 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 1277 DAG size of output: 1630 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)