/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/Problem15_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:33:58,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:33:58,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:33:58,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:33:58,436 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 [2023-03-30 23:33:58,464 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:33:58,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:33:58,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:33:58,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:33:58,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:33:58,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:33:58,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:33:58,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:33:58,467 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:33:58,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:33:58,467 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:33:58,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:33:58,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:33:58,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:33:58,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:33:58,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:33:58,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:33:58,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:33:58,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:33:58,470 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:33:58,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:33:58,470 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:33:58,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:33:58,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:33:58,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:33:58,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:33:58,698 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:33:58,698 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:33:58,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label51.c [2023-03-30 23:33:59,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:33:59,964 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:33:59,964 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label51.c [2023-03-30 23:33:59,979 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22e9dc582/47b15cce67ae447fbadefbe675337874/FLAG56c00678c [2023-03-30 23:33:59,994 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22e9dc582/47b15cce67ae447fbadefbe675337874 [2023-03-30 23:33:59,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:33:59,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:33:59,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:33:59,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:34:00,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:34:00,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:33:59" (1/1) ... [2023-03-30 23:34:00,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d49ef02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00, skipping insertion in model container [2023-03-30 23:34:00,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:33:59" (1/1) ... [2023-03-30 23:34:00,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:34:00,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:34:00,210 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/Problem15_label51.c[2122,2135] [2023-03-30 23:34:00,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:34:00,476 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:34:00,486 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/Problem15_label51.c[2122,2135] [2023-03-30 23:34:00,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:34:00,636 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:34:00,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00 WrapperNode [2023-03-30 23:34:00,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:34:00,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:34:00,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:34:00,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:34:00,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:34:00,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:34:00,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:34:00,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:34:00,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (1/1) ... [2023-03-30 23:34:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:34:00,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:00,802 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) [2023-03-30 23:34:00,825 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 [2023-03-30 23:34:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:34:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:34:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:34:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:34:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:34:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:34:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:34:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:34:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:34:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:34:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:34:00,915 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:34:00,916 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:34:02,784 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:34:02,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:34:02,798 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:34:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:34:02 BoogieIcfgContainer [2023-03-30 23:34:02,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:34:02,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:34:02,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:34:02,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:34:02,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:33:59" (1/3) ... [2023-03-30 23:34:02,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32347f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:34:02, skipping insertion in model container [2023-03-30 23:34:02,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:34:00" (2/3) ... [2023-03-30 23:34:02,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32347f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:34:02, skipping insertion in model container [2023-03-30 23:34:02,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:34:02" (3/3) ... [2023-03-30 23:34:02,808 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label51.c [2023-03-30 23:34:02,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:34:02,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:34:02,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:34:02,882 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;@1f7f6c02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:34:02,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:34:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 427 states have (on average 1.7681498829039812) internal successors, (755), 428 states have internal predecessors, (755), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:34:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-30 23:34:02,895 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:02,896 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] [2023-03-30 23:34:02,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:02,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash 835769137, now seen corresponding path program 1 times [2023-03-30 23:34:02,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:02,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574034410] [2023-03-30 23:34:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574034410] [2023-03-30 23:34:03,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574034410] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:03,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:34:03,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:34:03,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888848891] [2023-03-30 23:34:03,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:03,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:34:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:34:03,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:34:03,166 INFO L87 Difference]: Start difference. First operand has 437 states, 427 states have (on average 1.7681498829039812) internal successors, (755), 428 states have internal predecessors, (755), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-03-30 23:34:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:05,825 INFO L93 Difference]: Finished difference Result 1203 states and 2166 transitions. [2023-03-30 23:34:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:34:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 22 [2023-03-30 23:34:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:05,850 INFO L225 Difference]: With dead ends: 1203 [2023-03-30 23:34:05,850 INFO L226 Difference]: Without dead ends: 702 [2023-03-30 23:34:05,855 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 [2023-03-30 23:34:05,858 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1055 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:05,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 85 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:34:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-03-30 23:34:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 696. [2023-03-30 23:34:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 680 states have (on average 1.4676470588235293) internal successors, (998), 682 states have internal predecessors, (998), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:34:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2023-03-30 23:34:05,915 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 22 [2023-03-30 23:34:05,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:05,915 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2023-03-30 23:34:05,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-03-30 23:34:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2023-03-30 23:34:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-03-30 23:34:05,918 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:05,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:05,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:34:05,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:05,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2000162823, now seen corresponding path program 1 times [2023-03-30 23:34:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:05,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208422481] [2023-03-30 23:34:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:05,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208422481] [2023-03-30 23:34:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208422481] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:34:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:34:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132264466] [2023-03-30 23:34:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:34:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:34:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:34:06,267 INFO L87 Difference]: Start difference. First operand 696 states and 1015 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 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) [2023-03-30 23:34:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:10,344 INFO L93 Difference]: Finished difference Result 2070 states and 3047 transitions. [2023-03-30 23:34:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:34:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 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 101 [2023-03-30 23:34:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:10,349 INFO L225 Difference]: With dead ends: 2070 [2023-03-30 23:34:10,349 INFO L226 Difference]: Without dead ends: 1380 [2023-03-30 23:34:10,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:10,352 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1015 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:10,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 241 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-03-30 23:34:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-03-30 23:34:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1359. [2023-03-30 23:34:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1323 states have (on average 1.3862433862433863) internal successors, (1834), 1334 states have internal predecessors, (1834), 10 states have call successors, (10), 10 states have call predecessors, (10), 25 states have return successors, (45), 14 states have call predecessors, (45), 9 states have call successors, (45) [2023-03-30 23:34:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1889 transitions. [2023-03-30 23:34:10,388 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1889 transitions. Word has length 101 [2023-03-30 23:34:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:10,388 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1889 transitions. [2023-03-30 23:34:10,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 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) [2023-03-30 23:34:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1889 transitions. [2023-03-30 23:34:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-30 23:34:10,390 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:10,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:34:10,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:10,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -569072001, now seen corresponding path program 1 times [2023-03-30 23:34:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:10,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070968132] [2023-03-30 23:34:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070968132] [2023-03-30 23:34:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070968132] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:10,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:34:10,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:34:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634132952] [2023-03-30 23:34:10,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:34:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:10,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:34:10,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:34:10,651 INFO L87 Difference]: Start difference. First operand 1359 states and 1889 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-03-30 23:34:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:13,407 INFO L93 Difference]: Finished difference Result 4068 states and 5764 transitions. [2023-03-30 23:34:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:34:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 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 105 [2023-03-30 23:34:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:13,418 INFO L225 Difference]: With dead ends: 4068 [2023-03-30 23:34:13,418 INFO L226 Difference]: Without dead ends: 2715 [2023-03-30 23:34:13,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:13,422 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1274 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:13,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 169 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:34:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2023-03-30 23:34:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2338. [2023-03-30 23:34:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2265 states have (on average 1.2710816777041942) internal successors, (2879), 2298 states have internal predecessors, (2879), 16 states have call successors, (16), 16 states have call predecessors, (16), 56 states have return successors, (109), 23 states have call predecessors, (109), 15 states have call successors, (109) [2023-03-30 23:34:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3004 transitions. [2023-03-30 23:34:13,475 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3004 transitions. Word has length 105 [2023-03-30 23:34:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:13,476 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3004 transitions. [2023-03-30 23:34:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-03-30 23:34:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3004 transitions. [2023-03-30 23:34:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-03-30 23:34:13,486 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:13,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:13,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:34:13,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:13,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1186122618, now seen corresponding path program 1 times [2023-03-30 23:34:13,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:13,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093666673] [2023-03-30 23:34:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093666673] [2023-03-30 23:34:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093666673] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92298743] [2023-03-30 23:34:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:13,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:13,856 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) [2023-03-30 23:34:13,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:34:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:13,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:13,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:34:14,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92298743] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:14,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:34:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122601989] [2023-03-30 23:34:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:14,089 INFO L87 Difference]: Start difference. First operand 2338 states and 3004 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-30 23:34:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:15,522 INFO L93 Difference]: Finished difference Result 5922 states and 7869 transitions. [2023-03-30 23:34:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 222 [2023-03-30 23:34:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:15,535 INFO L225 Difference]: With dead ends: 5922 [2023-03-30 23:34:15,535 INFO L226 Difference]: Without dead ends: 3590 [2023-03-30 23:34:15,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:15,544 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 361 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:15,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 222 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:34:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2023-03-30 23:34:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3587. [2023-03-30 23:34:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3489 states have (on average 1.2593866437374606) internal successors, (4394), 3530 states have internal predecessors, (4394), 24 states have call successors, (24), 24 states have call predecessors, (24), 73 states have return successors, (220), 32 states have call predecessors, (220), 23 states have call successors, (220) [2023-03-30 23:34:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 4638 transitions. [2023-03-30 23:34:15,622 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 4638 transitions. Word has length 222 [2023-03-30 23:34:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:15,623 INFO L495 AbstractCegarLoop]: Abstraction has 3587 states and 4638 transitions. [2023-03-30 23:34:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-30 23:34:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 4638 transitions. [2023-03-30 23:34:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-03-30 23:34:15,627 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:15,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:15,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:34:15,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:15,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:15,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash -694718110, now seen corresponding path program 1 times [2023-03-30 23:34:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:15,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862255376] [2023-03-30 23:34:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:15,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-03-30 23:34:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-03-30 23:34:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862255376] [2023-03-30 23:34:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862255376] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124294913] [2023-03-30 23:34:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:16,166 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) [2023-03-30 23:34:16,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:34:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:16,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:16,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-03-30 23:34:16,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124294913] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:16,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:16,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:34:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614457823] [2023-03-30 23:34:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:16,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:34:16,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:16,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:34:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:16,397 INFO L87 Difference]: Start difference. First operand 3587 states and 4638 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-03-30 23:34:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:18,090 INFO L93 Difference]: Finished difference Result 8413 states and 11153 transitions. [2023-03-30 23:34:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:34:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 390 [2023-03-30 23:34:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:18,111 INFO L225 Difference]: With dead ends: 8413 [2023-03-30 23:34:18,111 INFO L226 Difference]: Without dead ends: 4832 [2023-03-30 23:34:18,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:34:18,118 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 320 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:18,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 648 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:34:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2023-03-30 23:34:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4831. [2023-03-30 23:34:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4710 states have (on average 1.2146496815286625) internal successors, (5721), 4758 states have internal predecessors, (5721), 32 states have call successors, (32), 32 states have call predecessors, (32), 88 states have return successors, (313), 40 states have call predecessors, (313), 31 states have call successors, (313) [2023-03-30 23:34:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 6066 transitions. [2023-03-30 23:34:18,212 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 6066 transitions. Word has length 390 [2023-03-30 23:34:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:18,212 INFO L495 AbstractCegarLoop]: Abstraction has 4831 states and 6066 transitions. [2023-03-30 23:34:18,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-03-30 23:34:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 6066 transitions. [2023-03-30 23:34:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-03-30 23:34:18,217 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:18,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:34:18,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:18,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:18,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:18,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2043593500, now seen corresponding path program 1 times [2023-03-30 23:34:18,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245811177] [2023-03-30 23:34:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:18,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-03-30 23:34:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-03-30 23:34:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245811177] [2023-03-30 23:34:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245811177] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651922921] [2023-03-30 23:34:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:19,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:19,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:19,329 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) [2023-03-30 23:34:19,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:34:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:19,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-30 23:34:19,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-03-30 23:34:19,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-03-30 23:34:20,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651922921] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:20,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:34:20,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-03-30 23:34:20,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814609441] [2023-03-30 23:34:20,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:20,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:34:20,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:34:20,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:34:20,843 INFO L87 Difference]: Start difference. First operand 4831 states and 6066 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:34:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:22,478 INFO L93 Difference]: Finished difference Result 12775 states and 16231 transitions. [2023-03-30 23:34:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:34:22,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 415 [2023-03-30 23:34:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:22,503 INFO L225 Difference]: With dead ends: 12775 [2023-03-30 23:34:22,504 INFO L226 Difference]: Without dead ends: 7950 [2023-03-30 23:34:22,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:34:22,514 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 651 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:22,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 137 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:34:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2023-03-30 23:34:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7018. [2023-03-30 23:34:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 6850 states have (on average 1.1817518248175183) internal successors, (8095), 6917 states have internal predecessors, (8095), 46 states have call successors, (46), 46 states have call predecessors, (46), 121 states have return successors, (479), 54 states have call predecessors, (479), 45 states have call successors, (479) [2023-03-30 23:34:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 8620 transitions. [2023-03-30 23:34:22,652 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 8620 transitions. Word has length 415 [2023-03-30 23:34:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:22,653 INFO L495 AbstractCegarLoop]: Abstraction has 7018 states and 8620 transitions. [2023-03-30 23:34:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:34:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 8620 transitions. [2023-03-30 23:34:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-03-30 23:34:22,658 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:22,658 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:22,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:22,876 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 [2023-03-30 23:34:22,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:22,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash 219743354, now seen corresponding path program 1 times [2023-03-30 23:34:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179406124] [2023-03-30 23:34:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-03-30 23:34:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-03-30 23:34:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179406124] [2023-03-30 23:34:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179406124] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750866126] [2023-03-30 23:34:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:23,437 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) [2023-03-30 23:34:23,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:34:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:23,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-30 23:34:23,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-03-30 23:34:24,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:34:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750866126] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:34:24,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:34:24,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-03-30 23:34:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665303330] [2023-03-30 23:34:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:34:24,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:34:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:34:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:34:24,063 INFO L87 Difference]: Start difference. First operand 7018 states and 8620 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-03-30 23:34:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:26,388 INFO L93 Difference]: Finished difference Result 14419 states and 17756 transitions. [2023-03-30 23:34:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:34:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 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 434 [2023-03-30 23:34:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:26,412 INFO L225 Difference]: With dead ends: 14419 [2023-03-30 23:34:26,412 INFO L226 Difference]: Without dead ends: 7407 [2023-03-30 23:34:26,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:34:26,425 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 602 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:26,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 180 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:34:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2023-03-30 23:34:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 7076. [2023-03-30 23:34:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7076 states, 6880 states have (on average 1.1790697674418604) internal successors, (8112), 6971 states have internal predecessors, (8112), 46 states have call successors, (46), 46 states have call predecessors, (46), 149 states have return successors, (582), 58 states have call predecessors, (582), 45 states have call successors, (582) [2023-03-30 23:34:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 8740 transitions. [2023-03-30 23:34:26,636 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 8740 transitions. Word has length 434 [2023-03-30 23:34:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:26,637 INFO L495 AbstractCegarLoop]: Abstraction has 7076 states and 8740 transitions. [2023-03-30 23:34:26,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-03-30 23:34:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 8740 transitions. [2023-03-30 23:34:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-03-30 23:34:26,645 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:26,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:26,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:26,850 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 [2023-03-30 23:34:26,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:26,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash -728871311, now seen corresponding path program 1 times [2023-03-30 23:34:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:26,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167730156] [2023-03-30 23:34:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-03-30 23:34:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:27,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:27,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167730156] [2023-03-30 23:34:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167730156] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48019303] [2023-03-30 23:34:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:27,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:27,472 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) [2023-03-30 23:34:27,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:34:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:27,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:27,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:33,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48019303] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:34:33,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:34:33,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:34:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68827233] [2023-03-30 23:34:33,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:34:33,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:34:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:33,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:34:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:34:33,447 INFO L87 Difference]: Start difference. First operand 7076 states and 8740 transitions. Second operand has 11 states, 11 states have (on average 53.63636363636363) internal successors, (590), 9 states have internal predecessors, (590), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:34:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:38,720 INFO L93 Difference]: Finished difference Result 24818 states and 32549 transitions. [2023-03-30 23:34:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-30 23:34:38,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 53.63636363636363) internal successors, (590), 9 states have internal predecessors, (590), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 508 [2023-03-30 23:34:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:38,760 INFO L225 Difference]: With dead ends: 24818 [2023-03-30 23:34:38,760 INFO L226 Difference]: Without dead ends: 14545 [2023-03-30 23:34:38,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1028 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:34:38,778 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 2268 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 5290 mSolverCounterSat, 1246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 6536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 5290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 269 Invalid, 6536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 5290 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-03-30 23:34:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14545 states. [2023-03-30 23:34:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14545 to 14512. [2023-03-30 23:34:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14512 states, 14187 states have (on average 1.1041093959258477) internal successors, (15664), 14310 states have internal predecessors, (15664), 101 states have call successors, (101), 94 states have call predecessors, (101), 223 states have return successors, (1432), 107 states have call predecessors, (1432), 100 states have call successors, (1432) [2023-03-30 23:34:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 17197 transitions. [2023-03-30 23:34:39,030 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 17197 transitions. Word has length 508 [2023-03-30 23:34:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:39,030 INFO L495 AbstractCegarLoop]: Abstraction has 14512 states and 17197 transitions. [2023-03-30 23:34:39,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.63636363636363) internal successors, (590), 9 states have internal predecessors, (590), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:34:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 17197 transitions. [2023-03-30 23:34:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-03-30 23:34:39,038 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:39,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:39,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:39,244 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 [2023-03-30 23:34:39,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:39,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1954650798, now seen corresponding path program 1 times [2023-03-30 23:34:39,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:39,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681077582] [2023-03-30 23:34:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-03-30 23:34:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-03-30 23:34:39,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:39,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681077582] [2023-03-30 23:34:39,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681077582] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:39,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21546201] [2023-03-30 23:34:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:39,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:39,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:39,981 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) [2023-03-30 23:34:39,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:34:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:40,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:40,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:42,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-03-30 23:34:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21546201] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:34:42,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:34:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-03-30 23:34:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020444940] [2023-03-30 23:34:42,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:34:42,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-30 23:34:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-30 23:34:42,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:34:42,436 INFO L87 Difference]: Start difference. First operand 14512 states and 17197 transitions. Second operand has 10 states, 10 states have (on average 67.0) internal successors, (670), 8 states have internal predecessors, (670), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:34:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:45,407 INFO L93 Difference]: Finished difference Result 32139 states and 38261 transitions. [2023-03-30 23:34:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-30 23:34:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 67.0) internal successors, (670), 8 states have internal predecessors, (670), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 535 [2023-03-30 23:34:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:45,454 INFO L225 Difference]: With dead ends: 32139 [2023-03-30 23:34:45,454 INFO L226 Difference]: Without dead ends: 22266 [2023-03-30 23:34:45,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1080 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-03-30 23:34:45,470 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1854 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:45,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 227 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:34:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22266 states. [2023-03-30 23:34:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22266 to 21015. [2023-03-30 23:34:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 20582 states have (on average 1.0926537751433292) internal successors, (22489), 20728 states have internal predecessors, (22489), 144 states have call successors, (144), 136 states have call predecessors, (144), 288 states have return successors, (2055), 150 states have call predecessors, (2055), 143 states have call successors, (2055) [2023-03-30 23:34:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 24688 transitions. [2023-03-30 23:34:45,836 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 24688 transitions. Word has length 535 [2023-03-30 23:34:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:45,837 INFO L495 AbstractCegarLoop]: Abstraction has 21015 states and 24688 transitions. [2023-03-30 23:34:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.0) internal successors, (670), 8 states have internal predecessors, (670), 4 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:34:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 24688 transitions. [2023-03-30 23:34:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-03-30 23:34:45,848 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:45,848 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:45,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:46,053 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 [2023-03-30 23:34:46,054 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:46,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 389981374, now seen corresponding path program 1 times [2023-03-30 23:34:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:46,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625940220] [2023-03-30 23:34:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:34:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2023-03-30 23:34:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2023-03-30 23:34:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 233 proven. 204 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-03-30 23:34:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:34:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625940220] [2023-03-30 23:34:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625940220] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:34:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784893704] [2023-03-30 23:34:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:34:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:34:46,778 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) [2023-03-30 23:34:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:34:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:46,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:34:46,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:34:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-03-30 23:34:47,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:34:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 234 proven. 206 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-03-30 23:34:47,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784893704] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:34:47,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:34:47,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:34:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192303729] [2023-03-30 23:34:47,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:34:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:34:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:34:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:34:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:34:47,498 INFO L87 Difference]: Start difference. First operand 21015 states and 24688 transitions. Second operand has 11 states, 11 states have (on average 82.18181818181819) internal successors, (904), 9 states have internal predecessors, (904), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:34:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:34:50,686 INFO L93 Difference]: Finished difference Result 44889 states and 52965 transitions. [2023-03-30 23:34:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-30 23:34:50,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 82.18181818181819) internal successors, (904), 9 states have internal predecessors, (904), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 672 [2023-03-30 23:34:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:34:50,740 INFO L225 Difference]: With dead ends: 44889 [2023-03-30 23:34:50,740 INFO L226 Difference]: Without dead ends: 24187 [2023-03-30 23:34:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 1361 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:34:50,768 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1445 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:34:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 290 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-30 23:34:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24187 states. [2023-03-30 23:34:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24187 to 23551. [2023-03-30 23:34:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23551 states, 23053 states have (on average 1.082158504316141) internal successors, (24947), 23232 states have internal predecessors, (24947), 160 states have call successors, (160), 152 states have call predecessors, (160), 337 states have return successors, (2184), 166 states have call predecessors, (2184), 159 states have call successors, (2184) [2023-03-30 23:34:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23551 states to 23551 states and 27291 transitions. [2023-03-30 23:34:51,121 INFO L78 Accepts]: Start accepts. Automaton has 23551 states and 27291 transitions. Word has length 672 [2023-03-30 23:34:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:34:51,121 INFO L495 AbstractCegarLoop]: Abstraction has 23551 states and 27291 transitions. [2023-03-30 23:34:51,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.18181818181819) internal successors, (904), 9 states have internal predecessors, (904), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:34:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 23551 states and 27291 transitions. [2023-03-30 23:34:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-03-30 23:34:51,133 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:34:51,133 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:34:51,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:34:51,339 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 [2023-03-30 23:34:51,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:34:51,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:34:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -749204686, now seen corresponding path program 1 times [2023-03-30 23:34:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:34:51,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541291780] [2023-03-30 23:34:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:34:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:34:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:34:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:34:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:34:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat