/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/Problem18_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:43:39,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:43:39,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:43:39,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:43:39,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:43:39,619 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:43:39,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:43:39,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:43:39,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:43:39,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:43:39,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:43:39,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:43:39,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:43:39,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:43:39,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:43:39,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:39,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:43:39,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:43:39,624 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:43:39,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:43:39,624 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:43:39,624 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:43:39,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:43:39,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:43:39,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:43:39,888 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:43:39,888 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:43:39,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label32.c [2023-04-01 23:43:41,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:43:41,430 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:43:41,430 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label32.c [2023-04-01 23:43:41,452 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021bdd415/9556c79b682549c2bc88896920233a1c/FLAGfce7611bf [2023-04-01 23:43:41,464 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021bdd415/9556c79b682549c2bc88896920233a1c [2023-04-01 23:43:41,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:43:41,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:43:41,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:41,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:43:41,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:43:41,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:41" (1/1) ... [2023-04-01 23:43:41,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74627527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:41, skipping insertion in model container [2023-04-01 23:43:41,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:43:41" (1/1) ... [2023-04-01 23:43:41,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:43:41,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:43:41,763 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/Problem18_label32.c[3190,3203] [2023-04-01 23:43:42,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:42,327 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:43:42,349 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/Problem18_label32.c[3190,3203] [2023-04-01 23:43:42,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:43:42,612 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:43:42,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42 WrapperNode [2023-04-01 23:43:42,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:43:42,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:43:42,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:43:42,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:43:42,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:43:42,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:43:42,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:43:42,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:43:42,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (1/1) ... [2023-04-01 23:43:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:43:42,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:42,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:43:42,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:43:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:43:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:43:42,997 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:43:42,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:43:45,911 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:43:45,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:43:45,923 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:43:45,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:45 BoogieIcfgContainer [2023-04-01 23:43:45,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:43:45,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:43:45,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:43:45,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:43:45,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:43:41" (1/3) ... [2023-04-01 23:43:45,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7360a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:45, skipping insertion in model container [2023-04-01 23:43:45,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:43:42" (2/3) ... [2023-04-01 23:43:45,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7360a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:43:45, skipping insertion in model container [2023-04-01 23:43:45,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:43:45" (3/3) ... [2023-04-01 23:43:45,933 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label32.c [2023-04-01 23:43:45,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:43:45,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:43:46,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:43:46,012 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;@3af8b668, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:43:46,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:43:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:43:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 23:43:46,026 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:46,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:46,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:46,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -530570837, now seen corresponding path program 1 times [2023-04-01 23:43:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737466286] [2023-04-01 23:43:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737466286] [2023-04-01 23:43:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737466286] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:43:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624713732] [2023-04-01 23:43:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:43:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:43:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:43:46,584 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:43:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:50,995 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:43:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:43:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 34 [2023-04-01 23:43:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:51,026 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:43:51,026 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:43:51,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:43:51,039 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2251 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:51,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 23:43:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:43:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:43:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:43:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:43:51,160 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 34 [2023-04-01 23:43:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:51,161 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:43:51,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:43:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:43:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-01 23:43:51,165 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:51,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:51,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:43:51,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:51,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1707050363, now seen corresponding path program 1 times [2023-04-01 23:43:51,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:51,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298978325] [2023-04-01 23:43:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:51,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298978325] [2023-04-01 23:43:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298978325] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:43:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:43:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997277418] [2023-04-01 23:43:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:43:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:43:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:43:51,462 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:43:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:58,225 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:43:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:43:58,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 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 103 [2023-04-01 23:43:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:58,245 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:43:58,245 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:43:58,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:43:58,250 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3830 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:58,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3830 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 23:43:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:43:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:43:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:43:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:43:58,375 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 103 [2023-04-01 23:43:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:58,376 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:43:58,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:43:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:43:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-04-01 23:43:58,387 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:58,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:58,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:43:58,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:58,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1488221666, now seen corresponding path program 1 times [2023-04-01 23:43:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772183474] [2023-04-01 23:43:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:43:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:43:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772183474] [2023-04-01 23:43:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772183474] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685356461] [2023-04-01 23:43:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:58,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:58,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:43:58,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:43:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:58,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:58,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:59,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:43:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:43:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685356461] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:43:59,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:43:59,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:43:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563306327] [2023-04-01 23:43:59,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:43:59,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:43:59,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:43:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:43:59,380 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:44:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:06,483 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:44:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:44:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 229 [2023-04-01 23:44:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:06,517 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:44:06,517 INFO L226 Difference]: Without dead ends: 8832 [2023-04-01 23:44:06,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:44:06,531 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 12035 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 13981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 12035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:06,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 208 Invalid, 13981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 12035 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 23:44:06,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2023-04-01 23:44:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7297. [2023-04-01 23:44:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7129 states have (on average 1.1161453219245336) internal successors, (7957), 7172 states have internal predecessors, (7957), 32 states have call successors, (32), 32 states have call predecessors, (32), 135 states have return successors, (343), 92 states have call predecessors, (343), 31 states have call successors, (343) [2023-04-01 23:44:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8332 transitions. [2023-04-01 23:44:06,757 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8332 transitions. Word has length 229 [2023-04-01 23:44:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:06,758 INFO L495 AbstractCegarLoop]: Abstraction has 7297 states and 8332 transitions. [2023-04-01 23:44:06,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.0) internal successors, (363), 9 states have internal predecessors, (363), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:44:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8332 transitions. [2023-04-01 23:44:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-01 23:44:06,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:06,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:44:06,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:44:06,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:06,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:06,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash 300348169, now seen corresponding path program 1 times [2023-04-01 23:44:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:06,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420509068] [2023-04-01 23:44:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 23:44:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420509068] [2023-04-01 23:44:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420509068] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977806228] [2023-04-01 23:44:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:07,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:07,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:07,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:07,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:44:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:07,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:07,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:44:07,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:07,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977806228] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:44:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199274463] [2023-04-01 23:44:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:07,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:07,660 INFO L87 Difference]: Start difference. First operand 7297 states and 8332 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:09,429 INFO L93 Difference]: Finished difference Result 14588 states and 16658 transitions. [2023-04-01 23:44:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:09,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 262 [2023-04-01 23:44:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:09,456 INFO L225 Difference]: With dead ends: 14588 [2023-04-01 23:44:09,456 INFO L226 Difference]: Without dead ends: 7297 [2023-04-01 23:44:09,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:09,470 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 741 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:09,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 944 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:44:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2023-04-01 23:44:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 7289. [2023-04-01 23:44:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7124 states have (on average 1.0765019651880965) internal successors, (7669), 7166 states have internal predecessors, (7669), 32 states have call successors, (32), 32 states have call predecessors, (32), 132 states have return successors, (244), 90 states have call predecessors, (244), 31 states have call successors, (244) [2023-04-01 23:44:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 7945 transitions. [2023-04-01 23:44:09,598 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 7945 transitions. Word has length 262 [2023-04-01 23:44:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:09,599 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 7945 transitions. [2023-04-01 23:44:09,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 7945 transitions. [2023-04-01 23:44:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-04-01 23:44:09,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:09,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:09,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:44:09,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:09,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1379941401, now seen corresponding path program 1 times [2023-04-01 23:44:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270703841] [2023-04-01 23:44:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270703841] [2023-04-01 23:44:10,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270703841] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338537123] [2023-04-01 23:44:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:10,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:10,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:10,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:10,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:44:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:10,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:10,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:10,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338537123] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:10,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:10,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:44:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554915961] [2023-04-01 23:44:10,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:10,365 INFO L87 Difference]: Start difference. First operand 7289 states and 7945 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:12,134 INFO L93 Difference]: Finished difference Result 18850 states and 20880 transitions. [2023-04-01 23:44:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 331 [2023-04-01 23:44:12,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:12,176 INFO L225 Difference]: With dead ends: 18850 [2023-04-01 23:44:12,177 INFO L226 Difference]: Without dead ends: 11567 [2023-04-01 23:44:12,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:44:12,196 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 691 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 282 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:44:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2023-04-01 23:44:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 10865. [2023-04-01 23:44:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10865 states, 10644 states have (on average 1.0697106350995866) internal successors, (11386), 10698 states have internal predecessors, (11386), 47 states have call successors, (47), 47 states have call predecessors, (47), 173 states have return successors, (445), 119 states have call predecessors, (445), 46 states have call successors, (445) [2023-04-01 23:44:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 11878 transitions. [2023-04-01 23:44:12,468 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 11878 transitions. Word has length 331 [2023-04-01 23:44:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 10865 states and 11878 transitions. [2023-04-01 23:44:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 11878 transitions. [2023-04-01 23:44:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-04-01 23:44:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:12,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:12,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:12,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:12,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash 402080620, now seen corresponding path program 1 times [2023-04-01 23:44:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:12,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032055622] [2023-04-01 23:44:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:12,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:13,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032055622] [2023-04-01 23:44:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032055622] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382896651] [2023-04-01 23:44:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:13,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:13,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:44:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:13,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:13,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:13,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382896651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 23:44:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982493332] [2023-04-01 23:44:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:13,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:13,393 INFO L87 Difference]: Start difference. First operand 10865 states and 11878 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:15,186 INFO L93 Difference]: Finished difference Result 25997 states and 28758 transitions. [2023-04-01 23:44:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:15,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 350 [2023-04-01 23:44:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:15,240 INFO L225 Difference]: With dead ends: 25997 [2023-04-01 23:44:15,240 INFO L226 Difference]: Without dead ends: 15138 [2023-04-01 23:44:15,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:15,263 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 704 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:15,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 194 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:44:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2023-04-01 23:44:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13727. [2023-04-01 23:44:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13461 states have (on average 1.0728029121164846) internal successors, (14441), 13524 states have internal predecessors, (14441), 59 states have call successors, (59), 59 states have call predecessors, (59), 206 states have return successors, (651), 143 states have call predecessors, (651), 58 states have call successors, (651) [2023-04-01 23:44:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 15151 transitions. [2023-04-01 23:44:15,515 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 15151 transitions. Word has length 350 [2023-04-01 23:44:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:15,516 INFO L495 AbstractCegarLoop]: Abstraction has 13727 states and 15151 transitions. [2023-04-01 23:44:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 15151 transitions. [2023-04-01 23:44:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-04-01 23:44:15,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:15,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:15,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:15,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:15,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash -318700272, now seen corresponding path program 1 times [2023-04-01 23:44:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972628207] [2023-04-01 23:44:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:44:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972628207] [2023-04-01 23:44:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972628207] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786985053] [2023-04-01 23:44:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:16,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:16,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:16,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:16,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:44:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:16,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:16,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:44:16,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786985053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:16,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 23:44:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041117424] [2023-04-01 23:44:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:16,637 INFO L87 Difference]: Start difference. First operand 13727 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:18,510 INFO L93 Difference]: Finished difference Result 39532 states and 44396 transitions. [2023-04-01 23:44:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:18,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 412 [2023-04-01 23:44:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:18,594 INFO L225 Difference]: With dead ends: 39532 [2023-04-01 23:44:18,595 INFO L226 Difference]: Without dead ends: 25811 [2023-04-01 23:44:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:18,623 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 678 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1007 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:44:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2023-04-01 23:44:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 24407. [2023-04-01 23:44:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 23991 states have (on average 1.0591471801925723) internal successors, (25410), 24084 states have internal predecessors, (25410), 104 states have call successors, (104), 104 states have call predecessors, (104), 311 states have return successors, (1391), 218 states have call predecessors, (1391), 103 states have call successors, (1391) [2023-04-01 23:44:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 26905 transitions. [2023-04-01 23:44:19,049 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 26905 transitions. Word has length 412 [2023-04-01 23:44:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:19,050 INFO L495 AbstractCegarLoop]: Abstraction has 24407 states and 26905 transitions. [2023-04-01 23:44:19,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:44:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 26905 transitions. [2023-04-01 23:44:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-04-01 23:44:19,059 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:19,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 23:44:19,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:19,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:19,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:19,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash -365233694, now seen corresponding path program 1 times [2023-04-01 23:44:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:19,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401055301] [2023-04-01 23:44:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:44:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:44:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 389 proven. 11 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-04-01 23:44:19,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:19,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401055301] [2023-04-01 23:44:19,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401055301] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:19,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11174193] [2023-04-01 23:44:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:19,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:19,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:19,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:19,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:44:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:20,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:20,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:20,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:44:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11174193] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:20,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:44:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277341022] [2023-04-01 23:44:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:44:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:44:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:44:20,573 INFO L87 Difference]: Start difference. First operand 24407 states and 26905 transitions. Second operand has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 11 states have internal predecessors, (474), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:24,196 INFO L93 Difference]: Finished difference Result 52496 states and 58062 transitions. [2023-04-01 23:44:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:44:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 11 states have internal predecessors, (474), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 439 [2023-04-01 23:44:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:24,280 INFO L225 Difference]: With dead ends: 52496 [2023-04-01 23:44:24,280 INFO L226 Difference]: Without dead ends: 28095 [2023-04-01 23:44:24,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 888 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:44:24,317 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5195 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 5047 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 5910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 5047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:24,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 135 Invalid, 5910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 5047 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 23:44:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2023-04-01 23:44:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 28069. [2023-04-01 23:44:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28069 states, 27562 states have (on average 1.047456643204412) internal successors, (28870), 27686 states have internal predecessors, (28870), 119 states have call successors, (119), 119 states have call predecessors, (119), 387 states have return successors, (1459), 263 states have call predecessors, (1459), 118 states have call successors, (1459) [2023-04-01 23:44:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28069 states to 28069 states and 30448 transitions. [2023-04-01 23:44:24,780 INFO L78 Accepts]: Start accepts. Automaton has 28069 states and 30448 transitions. Word has length 439 [2023-04-01 23:44:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 28069 states and 30448 transitions. [2023-04-01 23:44:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 11 states have internal predecessors, (474), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:44:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28069 states and 30448 transitions. [2023-04-01 23:44:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-04-01 23:44:24,790 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:24,790 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:24,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:24,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:24,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:24,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash 10076336, now seen corresponding path program 1 times [2023-04-01 23:44:24,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:24,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641462078] [2023-04-01 23:44:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-04-01 23:44:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 204 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-04-01 23:44:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641462078] [2023-04-01 23:44:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641462078] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402123002] [2023-04-01 23:44:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:25,617 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:25,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:44:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:25,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:25,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 23:44:26,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 205 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 23:44:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402123002] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:26,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:44:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997893108] [2023-04-01 23:44:26,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:44:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:44:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:44:26,599 INFO L87 Difference]: Start difference. First operand 28069 states and 30448 transitions. Second operand has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:33,193 INFO L93 Difference]: Finished difference Result 90393 states and 100867 transitions. [2023-04-01 23:44:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 460 [2023-04-01 23:44:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:33,461 INFO L225 Difference]: With dead ends: 90393 [2023-04-01 23:44:33,462 INFO L226 Difference]: Without dead ends: 62330 [2023-04-01 23:44:33,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 935 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:44:33,492 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5685 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 9257 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 9257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:33,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5685 Valid, 224 Invalid, 10377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1120 Valid, 9257 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 23:44:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62330 states. [2023-04-01 23:44:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62330 to 58108. [2023-04-01 23:44:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58108 states, 57119 states have (on average 1.0491605245189868) internal successors, (59927), 57378 states have internal predecessors, (59927), 245 states have call successors, (245), 245 states have call predecessors, (245), 743 states have return successors, (4373), 484 states have call predecessors, (4373), 244 states have call successors, (4373) [2023-04-01 23:44:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58108 states to 58108 states and 64545 transitions. [2023-04-01 23:44:34,630 INFO L78 Accepts]: Start accepts. Automaton has 58108 states and 64545 transitions. Word has length 460 [2023-04-01 23:44:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:34,630 INFO L495 AbstractCegarLoop]: Abstraction has 58108 states and 64545 transitions. [2023-04-01 23:44:34,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:44:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 58108 states and 64545 transitions. [2023-04-01 23:44:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-04-01 23:44:34,643 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:34,643 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:34,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:34,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:34,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:34,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1402961999, now seen corresponding path program 1 times [2023-04-01 23:44:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133975488] [2023-04-01 23:44:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:34,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 81 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:44:35,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133975488] [2023-04-01 23:44:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133975488] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549976375] [2023-04-01 23:44:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:35,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:35,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:35,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:44:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:36,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:36,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 23:44:36,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:44:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549976375] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:44:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:44:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:44:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841271034] [2023-04-01 23:44:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:44:36,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:44:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:44:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:36,131 INFO L87 Difference]: Start difference. First operand 58108 states and 64545 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:38,024 INFO L93 Difference]: Finished difference Result 116210 states and 129084 transitions. [2023-04-01 23:44:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:44:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 539 [2023-04-01 23:44:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:38,192 INFO L225 Difference]: With dead ends: 116210 [2023-04-01 23:44:38,192 INFO L226 Difference]: Without dead ends: 58108 [2023-04-01 23:44:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:44:38,259 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 779 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:38,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 791 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:44:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58108 states. [2023-04-01 23:44:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58108 to 58108. [2023-04-01 23:44:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58108 states, 57119 states have (on average 1.0432780685936378) internal successors, (59591), 57378 states have internal predecessors, (59591), 245 states have call successors, (245), 245 states have call predecessors, (245), 743 states have return successors, (3883), 484 states have call predecessors, (3883), 244 states have call successors, (3883) [2023-04-01 23:44:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58108 states to 58108 states and 63719 transitions. [2023-04-01 23:44:39,689 INFO L78 Accepts]: Start accepts. Automaton has 58108 states and 63719 transitions. Word has length 539 [2023-04-01 23:44:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:39,690 INFO L495 AbstractCegarLoop]: Abstraction has 58108 states and 63719 transitions. [2023-04-01 23:44:39,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:44:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 58108 states and 63719 transitions. [2023-04-01 23:44:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-04-01 23:44:39,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:39,702 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:39,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:39,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:44:39,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:39,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1164019731, now seen corresponding path program 1 times [2023-04-01 23:44:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502206391] [2023-04-01 23:44:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:44:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-04-01 23:44:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-04-01 23:44:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-04-01 23:44:40,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502206391] [2023-04-01 23:44:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502206391] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505865288] [2023-04-01 23:44:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:40,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:40,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:40,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:40,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:44:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:40,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:40,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-04-01 23:44:41,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-04-01 23:44:41,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505865288] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:41,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:44:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445444700] [2023-04-01 23:44:41,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:44:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:44:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:44:41,362 INFO L87 Difference]: Start difference. First operand 58108 states and 63719 transitions. Second operand has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 9 states have internal predecessors, (614), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:48,352 INFO L93 Difference]: Finished difference Result 121284 states and 133106 transitions. [2023-04-01 23:44:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 9 states have internal predecessors, (614), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 596 [2023-04-01 23:44:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:48,528 INFO L225 Difference]: With dead ends: 121284 [2023-04-01 23:44:48,528 INFO L226 Difference]: Without dead ends: 61044 [2023-04-01 23:44:48,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1211 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:44:48,753 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3572 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 12808 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3576 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 13600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 12808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:48,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3576 Valid, 242 Invalid, 13600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 12808 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 23:44:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61044 states. [2023-04-01 23:44:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61044 to 54635. [2023-04-01 23:44:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54635 states, 53659 states have (on average 1.0294079278406232) internal successors, (55237), 53932 states have internal predecessors, (55237), 230 states have call successors, (230), 230 states have call predecessors, (230), 745 states have return successors, (2642), 472 states have call predecessors, (2642), 229 states have call successors, (2642) [2023-04-01 23:44:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54635 states to 54635 states and 58109 transitions. [2023-04-01 23:44:49,748 INFO L78 Accepts]: Start accepts. Automaton has 54635 states and 58109 transitions. Word has length 596 [2023-04-01 23:44:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:49,749 INFO L495 AbstractCegarLoop]: Abstraction has 54635 states and 58109 transitions. [2023-04-01 23:44:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 9 states have internal predecessors, (614), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:44:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 54635 states and 58109 transitions. [2023-04-01 23:44:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-04-01 23:44:49,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:49,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:49,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:49,969 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:49,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 337033199, now seen corresponding path program 1 times [2023-04-01 23:44:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157669131] [2023-04-01 23:44:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:44:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:44:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:44:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:44:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157669131] [2023-04-01 23:44:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157669131] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:44:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833562293] [2023-04-01 23:44:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:50,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:44:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:44:50,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:44:50,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:44:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:51,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:44:51,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:44:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:44:51,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:44:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:44:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833562293] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:44:51,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:44:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:44:51,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514520096] [2023-04-01 23:44:51,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:44:51,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:44:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:44:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:44:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:44:51,551 INFO L87 Difference]: Start difference. First operand 54635 states and 58109 transitions. Second operand has 12 states, 12 states have (on average 58.5) internal successors, (702), 10 states have internal predecessors, (702), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:44:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:44:57,678 INFO L93 Difference]: Finished difference Result 115738 states and 122983 transitions. [2023-04-01 23:44:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:44:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 58.5) internal successors, (702), 10 states have internal predecessors, (702), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 637 [2023-04-01 23:44:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:44:57,807 INFO L225 Difference]: With dead ends: 115738 [2023-04-01 23:44:57,807 INFO L226 Difference]: Without dead ends: 59693 [2023-04-01 23:44:57,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1317 GetRequests, 1292 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:44:57,991 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 4254 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8319 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 9279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 8319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:44:57,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 208 Invalid, 9279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 8319 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 23:44:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59693 states. [2023-04-01 23:44:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59693 to 57560. [2023-04-01 23:44:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57560 states, 56511 states have (on average 1.0218364566190654) internal successors, (57745), 56814 states have internal predecessors, (57745), 242 states have call successors, (242), 242 states have call predecessors, (242), 806 states have return successors, (2155), 503 states have call predecessors, (2155), 241 states have call successors, (2155) [2023-04-01 23:44:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57560 states to 57560 states and 60142 transitions. [2023-04-01 23:44:58,769 INFO L78 Accepts]: Start accepts. Automaton has 57560 states and 60142 transitions. Word has length 637 [2023-04-01 23:44:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:44:58,770 INFO L495 AbstractCegarLoop]: Abstraction has 57560 states and 60142 transitions. [2023-04-01 23:44:58,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.5) internal successors, (702), 10 states have internal predecessors, (702), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:44:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 57560 states and 60142 transitions. [2023-04-01 23:44:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-04-01 23:44:58,777 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:44:58,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:44:58,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:44:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:44:58,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:44:58,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:44:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1230458151, now seen corresponding path program 1 times [2023-04-01 23:44:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:44:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915979347] [2023-04-01 23:44:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:44:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:44:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:44:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:44:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:44:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:44:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2023-04-01 23:45:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-04-01 23:45:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915979347] [2023-04-01 23:45:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915979347] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853769283] [2023-04-01 23:45:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:00,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:00,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:00,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:00,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:45:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:00,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:45:00,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-04-01 23:45:01,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:45:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853769283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:45:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:45:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:45:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453660806] [2023-04-01 23:45:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:45:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:45:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:45:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:45:01,129 INFO L87 Difference]: Start difference. First operand 57560 states and 60142 transitions. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:45:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:03,863 INFO L93 Difference]: Finished difference Result 120114 states and 125414 transitions. [2023-04-01 23:45:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:45:03,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 682 [2023-04-01 23:45:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:03,974 INFO L225 Difference]: With dead ends: 120114 [2023-04-01 23:45:03,975 INFO L226 Difference]: Without dead ends: 62560 [2023-04-01 23:45:04,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:45:04,008 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1873 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:04,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 104 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:45:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62560 states. [2023-04-01 23:45:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62560 to 62522. [2023-04-01 23:45:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62522 states, 61411 states have (on average 1.0203872270440149) internal successors, (62663), 61726 states have internal predecessors, (62663), 263 states have call successors, (263), 263 states have call predecessors, (263), 847 states have return successors, (2221), 532 states have call predecessors, (2221), 262 states have call successors, (2221) [2023-04-01 23:45:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62522 states to 62522 states and 65147 transitions. [2023-04-01 23:45:04,852 INFO L78 Accepts]: Start accepts. Automaton has 62522 states and 65147 transitions. Word has length 682 [2023-04-01 23:45:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:04,853 INFO L495 AbstractCegarLoop]: Abstraction has 62522 states and 65147 transitions. [2023-04-01 23:45:04,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 4 states have internal predecessors, (553), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:45:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 62522 states and 65147 transitions. [2023-04-01 23:45:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2023-04-01 23:45:04,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:04,895 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:04,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:05,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:45:05,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:05,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1501696063, now seen corresponding path program 1 times [2023-04-01 23:45:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330266568] [2023-04-01 23:45:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:05,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-04-01 23:45:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2023-04-01 23:45:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1403 [2023-04-01 23:45:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 142 proven. 5 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-04-01 23:45:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330266568] [2023-04-01 23:45:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330266568] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656622470] [2023-04-01 23:45:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:07,109 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:07,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:45:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:07,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:45:07,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 1477 proven. 2 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-04-01 23:45:08,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 399 proven. 217 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2023-04-01 23:45:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656622470] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:10,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:45:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053269399] [2023-04-01 23:45:10,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:45:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:45:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:45:10,585 INFO L87 Difference]: Start difference. First operand 62522 states and 65147 transitions. Second operand has 10 states, 10 states have (on average 123.9) internal successors, (1239), 8 states have internal predecessors, (1239), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:45:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:17,828 INFO L93 Difference]: Finished difference Result 148379 states and 155416 transitions. [2023-04-01 23:45:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 23:45:17,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 123.9) internal successors, (1239), 8 states have internal predecessors, (1239), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 1523 [2023-04-01 23:45:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:17,990 INFO L225 Difference]: With dead ends: 148379 [2023-04-01 23:45:17,990 INFO L226 Difference]: Without dead ends: 85869 [2023-04-01 23:45:18,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3114 GetRequests, 3083 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2023-04-01 23:45:18,050 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 9017 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6900 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9017 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 6900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:18,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9017 Valid, 187 Invalid, 8039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 6900 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 23:45:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85869 states. [2023-04-01 23:45:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85869 to 84396. [2023-04-01 23:45:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84396 states, 83053 states have (on average 1.0189999157164702) internal successors, (84631), 83394 states have internal predecessors, (84631), 356 states have call successors, (356), 356 states have call predecessors, (356), 986 states have return successors, (2875), 645 states have call predecessors, (2875), 355 states have call successors, (2875) [2023-04-01 23:45:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84396 states to 84396 states and 87862 transitions. [2023-04-01 23:45:19,521 INFO L78 Accepts]: Start accepts. Automaton has 84396 states and 87862 transitions. Word has length 1523 [2023-04-01 23:45:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:19,521 INFO L495 AbstractCegarLoop]: Abstraction has 84396 states and 87862 transitions. [2023-04-01 23:45:19,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 123.9) internal successors, (1239), 8 states have internal predecessors, (1239), 5 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:45:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 84396 states and 87862 transitions. [2023-04-01 23:45:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1933 [2023-04-01 23:45:19,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:19,621 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:19,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:19,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:45:19,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:19,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1278530322, now seen corresponding path program 1 times [2023-04-01 23:45:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100686224] [2023-04-01 23:45:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:19,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:45:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:45:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2023-04-01 23:45:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1272 [2023-04-01 23:45:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 586 proven. 144 refuted. 0 times theorem prover too weak. 2149 trivial. 0 not checked. [2023-04-01 23:45:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100686224] [2023-04-01 23:45:23,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100686224] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597356322] [2023-04-01 23:45:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:23,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:23,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:45:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:24,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:45:24,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 2234 proven. 2 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-04-01 23:45:24,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 748 proven. 338 refuted. 0 times theorem prover too weak. 1793 trivial. 0 not checked. [2023-04-01 23:45:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597356322] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:25,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:25,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:45:25,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479155760] [2023-04-01 23:45:25,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:45:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:45:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:45:25,570 INFO L87 Difference]: Start difference. First operand 84396 states and 87862 transitions. Second operand has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:45:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:45:47,093 INFO L93 Difference]: Finished difference Result 199263 states and 207991 transitions. [2023-04-01 23:45:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-04-01 23:45:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 1932 [2023-04-01 23:45:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:45:47,325 INFO L225 Difference]: With dead ends: 199263 [2023-04-01 23:45:47,325 INFO L226 Difference]: Without dead ends: 115583 [2023-04-01 23:45:47,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4061 GetRequests, 3963 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1251, Invalid=8451, Unknown=0, NotChecked=0, Total=9702 [2023-04-01 23:45:47,400 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 28226 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 30037 mSolverCounterSat, 2317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28237 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 32354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2317 IncrementalHoareTripleChecker+Valid, 30037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:45:47,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28237 Valid, 888 Invalid, 32354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2317 Valid, 30037 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-04-01 23:45:47,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115583 states. [2023-04-01 23:45:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115583 to 103568. [2023-04-01 23:45:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103568 states, 101974 states have (on average 1.0160040794712377) internal successors, (103606), 102364 states have internal predecessors, (103606), 437 states have call successors, (437), 437 states have call predecessors, (437), 1156 states have return successors, (3119), 766 states have call predecessors, (3119), 436 states have call successors, (3119) [2023-04-01 23:45:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103568 states to 103568 states and 107162 transitions. [2023-04-01 23:45:49,260 INFO L78 Accepts]: Start accepts. Automaton has 103568 states and 107162 transitions. Word has length 1932 [2023-04-01 23:45:49,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:45:49,261 INFO L495 AbstractCegarLoop]: Abstraction has 103568 states and 107162 transitions. [2023-04-01 23:45:49,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 123.8) internal successors, (1857), 13 states have internal predecessors, (1857), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:45:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 103568 states and 107162 transitions. [2023-04-01 23:45:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1981 [2023-04-01 23:45:49,590 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:45:49,591 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:45:49,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:45:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:45:49,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:45:49,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:45:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1437934512, now seen corresponding path program 1 times [2023-04-01 23:45:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:45:49,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981628901] [2023-04-01 23:45:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:45:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:45:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:45:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:45:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:45:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1214 [2023-04-01 23:45:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2023-04-01 23:45:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:45:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:45:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 827 proven. 479 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2023-04-01 23:45:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:45:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981628901] [2023-04-01 23:45:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981628901] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:45:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320992944] [2023-04-01 23:45:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:45:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:45:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:45:52,332 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:45:52,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:45:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:45:52,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:45:52,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:45:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 1747 proven. 2 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2023-04-01 23:45:53,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:45:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2751 backedges. 475 proven. 109 refuted. 0 times theorem prover too weak. 2167 trivial. 0 not checked. [2023-04-01 23:45:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320992944] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:45:55,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:45:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:45:55,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422161908] [2023-04-01 23:45:55,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:45:55,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:45:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:45:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:45:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:45:55,527 INFO L87 Difference]: Start difference. First operand 103568 states and 107162 transitions. Second operand has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 10 states have internal predecessors, (1855), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 23:46:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:05,504 INFO L93 Difference]: Finished difference Result 218562 states and 226517 transitions. [2023-04-01 23:46:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-04-01 23:46:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 10 states have internal predecessors, (1855), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 1980 [2023-04-01 23:46:05,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:05,711 INFO L225 Difference]: With dead ends: 218562 [2023-04-01 23:46:05,711 INFO L226 Difference]: Without dead ends: 115006 [2023-04-01 23:46:05,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4104 GetRequests, 4036 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=696, Invalid=3996, Unknown=0, NotChecked=0, Total=4692 [2023-04-01 23:46:05,757 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 7120 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 10661 mSolverCounterSat, 1034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7120 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 11695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 10661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:05,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7120 Valid, 628 Invalid, 11695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1034 Valid, 10661 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-04-01 23:46:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115006 states. [2023-04-01 23:46:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115006 to 105725. [2023-04-01 23:46:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105725 states, 104090 states have (on average 1.0140839657988279) internal successors, (105556), 104498 states have internal predecessors, (105556), 446 states have call successors, (446), 446 states have call predecessors, (446), 1188 states have return successors, (2883), 780 states have call predecessors, (2883), 445 states have call successors, (2883) [2023-04-01 23:46:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105725 states to 105725 states and 108885 transitions. [2023-04-01 23:46:07,638 INFO L78 Accepts]: Start accepts. Automaton has 105725 states and 108885 transitions. Word has length 1980 [2023-04-01 23:46:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:07,639 INFO L495 AbstractCegarLoop]: Abstraction has 105725 states and 108885 transitions. [2023-04-01 23:46:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.58333333333334) internal successors, (1855), 10 states have internal predecessors, (1855), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 23:46:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 105725 states and 108885 transitions. [2023-04-01 23:46:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2113 [2023-04-01 23:46:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:07,952 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:07,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:08,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:08,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:08,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1733781621, now seen corresponding path program 1 times [2023-04-01 23:46:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:08,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590809084] [2023-04-01 23:46:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:46:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:46:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1168 [2023-04-01 23:46:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1264 [2023-04-01 23:46:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1338 [2023-04-01 23:46:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1452 [2023-04-01 23:46:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4494 backedges. 591 proven. 340 refuted. 0 times theorem prover too weak. 3563 trivial. 0 not checked. [2023-04-01 23:46:13,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590809084] [2023-04-01 23:46:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590809084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577912674] [2023-04-01 23:46:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:13,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:13,182 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:13,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:46:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:13,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:46:13,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4494 backedges. 2667 proven. 2 refuted. 0 times theorem prover too weak. 1825 trivial. 0 not checked. [2023-04-01 23:46:13,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4494 backedges. 746 proven. 146 refuted. 0 times theorem prover too weak. 3602 trivial. 0 not checked. [2023-04-01 23:46:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577912674] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:14,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2023-04-01 23:46:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954003480] [2023-04-01 23:46:14,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:46:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:46:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:46:14,105 INFO L87 Difference]: Start difference. First operand 105725 states and 108885 transitions. Second operand has 16 states, 16 states have (on average 94.25) internal successors, (1508), 14 states have internal predecessors, (1508), 7 states have call successors, (21), 7 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:46:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:33,699 INFO L93 Difference]: Finished difference Result 212984 states and 219312 transitions. [2023-04-01 23:46:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-04-01 23:46:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 94.25) internal successors, (1508), 14 states have internal predecessors, (1508), 7 states have call successors, (21), 7 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 2112 [2023-04-01 23:46:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:33,928 INFO L225 Difference]: With dead ends: 212984 [2023-04-01 23:46:33,929 INFO L226 Difference]: Without dead ends: 107975 [2023-04-01 23:46:34,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4417 GetRequests, 4322 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1224, Invalid=7706, Unknown=0, NotChecked=0, Total=8930 [2023-04-01 23:46:34,024 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 29068 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 30883 mSolverCounterSat, 1895 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29068 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 32778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1895 IncrementalHoareTripleChecker+Valid, 30883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:34,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29068 Valid, 680 Invalid, 32778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1895 Valid, 30883 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-04-01 23:46:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107975 states. [2023-04-01 23:46:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107975 to 102286. [2023-04-01 23:46:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102286 states, 100651 states have (on average 1.0117733554559816) internal successors, (101836), 101078 states have internal predecessors, (101836), 431 states have call successors, (431), 431 states have call predecessors, (431), 1203 states have return successors, (2409), 776 states have call predecessors, (2409), 430 states have call successors, (2409) [2023-04-01 23:46:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102286 states to 102286 states and 104676 transitions. [2023-04-01 23:46:36,189 INFO L78 Accepts]: Start accepts. Automaton has 102286 states and 104676 transitions. Word has length 2112 [2023-04-01 23:46:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:36,190 INFO L495 AbstractCegarLoop]: Abstraction has 102286 states and 104676 transitions. [2023-04-01 23:46:36,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 94.25) internal successors, (1508), 14 states have internal predecessors, (1508), 7 states have call successors, (21), 7 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:46:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 102286 states and 104676 transitions. [2023-04-01 23:46:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2184 [2023-04-01 23:46:36,413 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:36,414 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:36,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 23:46:36,622 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:36,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 766029272, now seen corresponding path program 1 times [2023-04-01 23:46:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396015698] [2023-04-01 23:46:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:46:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:46:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1299 [2023-04-01 23:46:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1523 [2023-04-01 23:46:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4217 backedges. 1695 proven. 75 refuted. 0 times theorem prover too weak. 2447 trivial. 0 not checked. [2023-04-01 23:46:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396015698] [2023-04-01 23:46:41,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396015698] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668048361] [2023-04-01 23:46:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:41,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:41,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:41,076 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:41,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:46:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:41,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:46:41,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4217 backedges. 1717 proven. 2 refuted. 0 times theorem prover too weak. 2498 trivial. 0 not checked. [2023-04-01 23:46:42,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:46:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4217 backedges. 1717 proven. 2 refuted. 0 times theorem prover too weak. 2498 trivial. 0 not checked. [2023-04-01 23:46:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668048361] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:46:43,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:46:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2023-04-01 23:46:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563411055] [2023-04-01 23:46:43,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:46:43,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:46:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:46:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:46:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:46:43,907 INFO L87 Difference]: Start difference. First operand 102286 states and 104676 transitions. Second operand has 14 states, 14 states have (on average 175.57142857142858) internal successors, (2458), 12 states have internal predecessors, (2458), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:46:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:46:52,093 INFO L93 Difference]: Finished difference Result 205281 states and 210099 transitions. [2023-04-01 23:46:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 23:46:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 175.57142857142858) internal successors, (2458), 12 states have internal predecessors, (2458), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 2183 [2023-04-01 23:46:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:46:52,312 INFO L225 Difference]: With dead ends: 205281 [2023-04-01 23:46:52,313 INFO L226 Difference]: Without dead ends: 100869 [2023-04-01 23:46:52,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4439 GetRequests, 4407 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2023-04-01 23:46:52,421 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 8098 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 13685 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8098 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 14319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 13685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:46:52,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8098 Valid, 279 Invalid, 14319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 13685 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-04-01 23:46:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100869 states. [2023-04-01 23:46:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100869 to 100112. [2023-04-01 23:46:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100112 states, 98521 states have (on average 1.0104140234061774) internal successors, (99547), 98938 states have internal predecessors, (99547), 422 states have call successors, (422), 422 states have call predecessors, (422), 1168 states have return successors, (2125), 751 states have call predecessors, (2125), 421 states have call successors, (2125) [2023-04-01 23:46:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100112 states to 100112 states and 102094 transitions. [2023-04-01 23:46:53,671 INFO L78 Accepts]: Start accepts. Automaton has 100112 states and 102094 transitions. Word has length 2183 [2023-04-01 23:46:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:46:53,672 INFO L495 AbstractCegarLoop]: Abstraction has 100112 states and 102094 transitions. [2023-04-01 23:46:53,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.57142857142858) internal successors, (2458), 12 states have internal predecessors, (2458), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:46:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 100112 states and 102094 transitions. [2023-04-01 23:46:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2220 [2023-04-01 23:46:53,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:46:53,771 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:46:53,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:46:53,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:46:53,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:46:53,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:46:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1357904615, now seen corresponding path program 1 times [2023-04-01 23:46:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:46:53,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199513930] [2023-04-01 23:46:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:53,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:46:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:46:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:46:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:46:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:46:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:46:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:46:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1167 [2023-04-01 23:46:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1453 [2023-04-01 23:46:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2023-04-01 23:46:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:46:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:46:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4475 backedges. 810 proven. 523 refuted. 0 times theorem prover too weak. 3142 trivial. 0 not checked. [2023-04-01 23:46:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:46:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199513930] [2023-04-01 23:46:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199513930] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:46:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398206906] [2023-04-01 23:46:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:46:56,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:46:56,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:46:56,607 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:46:56,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:46:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:46:57,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:46:57,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:46:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4475 backedges. 1783 proven. 2 refuted. 0 times theorem prover too weak. 2690 trivial. 0 not checked. [2023-04-01 23:46:58,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:47:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4475 backedges. 1783 proven. 2 refuted. 0 times theorem prover too weak. 2690 trivial. 0 not checked. [2023-04-01 23:47:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398206906] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:47:00,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:47:00,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 23:47:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605654053] [2023-04-01 23:47:00,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:47:00,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:47:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:47:00,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:47:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:47:00,041 INFO L87 Difference]: Start difference. First operand 100112 states and 102094 transitions. Second operand has 12 states, 12 states have (on average 169.58333333333334) internal successors, (2035), 10 states have internal predecessors, (2035), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14)