/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/Problem17_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:39:06,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:39:06,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:39:07,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:39:07,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:39:07,080 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:39:07,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:39:07,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:39:07,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:39:07,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:39:07,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:39:07,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:39:07,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:39:07,083 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:39:07,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:39:07,084 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:39:07,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:39:07,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:39:07,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:39:07,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:39:07,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:39:07,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:39:07,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:39:07,087 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:39:07,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:39:07,087 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:39:07,087 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:39:07,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:39:07,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:39:07,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:39:07,325 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:39:07,325 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:39:07,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2023-03-30 23:39:08,552 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:39:08,927 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:39:08,927 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2023-03-30 23:39:08,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af9c9b5a/0c890a2aeacb4bdaa279da27f994bb27/FLAGaef7b7e99 [2023-03-30 23:39:08,967 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af9c9b5a/0c890a2aeacb4bdaa279da27f994bb27 [2023-03-30 23:39:08,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:39:08,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:39:08,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:39:08,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:39:08,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:39:08,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:39:08" (1/1) ... [2023-03-30 23:39:08,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f125d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:08, skipping insertion in model container [2023-03-30 23:39:08,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:39:08" (1/1) ... [2023-03-30 23:39:08,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:39:09,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:39:09,261 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/Problem17_label09.c[1938,1951] [2023-03-30 23:39:09,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:39:09,789 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:39:09,806 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/Problem17_label09.c[1938,1951] [2023-03-30 23:39:10,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:39:10,039 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:39:10,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10 WrapperNode [2023-03-30 23:39:10,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:39:10,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:39:10,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:39:10,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:39:10,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:39:10,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:39:10,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:39:10,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:39:10,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (1/1) ... [2023-03-30 23:39:10,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:39:10,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:10,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:39:10,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:39:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:39:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:39:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:39:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:39:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:39:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:39:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:39:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:39:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:39:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:39:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:39:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:39:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:39:10,442 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:39:10,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:39:13,616 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:39:13,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:39:13,631 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:39:13,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:39:13 BoogieIcfgContainer [2023-03-30 23:39:13,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:39:13,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:39:13,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:39:13,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:39:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:39:08" (1/3) ... [2023-03-30 23:39:13,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad14bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:39:13, skipping insertion in model container [2023-03-30 23:39:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:39:10" (2/3) ... [2023-03-30 23:39:13,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad14bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:39:13, skipping insertion in model container [2023-03-30 23:39:13,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:39:13" (3/3) ... [2023-03-30 23:39:13,643 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2023-03-30 23:39:13,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:39:13,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:39:13,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:39:13,738 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;@37e33c11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:39:13,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:39:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:39:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-30 23:39:13,751 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:13,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:13,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:13,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash -862308266, now seen corresponding path program 1 times [2023-03-30 23:39:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383992835] [2023-03-30 23:39:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383992835] [2023-03-30 23:39:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383992835] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:39:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:39:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307027687] [2023-03-30 23:39:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:14,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:39:14,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:39:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:39:14,248 INFO L87 Difference]: Start difference. First operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:39:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:18,415 INFO L93 Difference]: Finished difference Result 1690 states and 3086 transitions. [2023-03-30 23:39:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:39:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 18 [2023-03-30 23:39:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:18,434 INFO L225 Difference]: With dead ends: 1690 [2023-03-30 23:39:18,435 INFO L226 Difference]: Without dead ends: 1010 [2023-03-30 23:39:18,444 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 [2023-03-30 23:39:18,448 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1488 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:18,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 131 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-03-30 23:39:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-03-30 23:39:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2023-03-30 23:39:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 987 states have (on average 1.4994934143870313) internal successors, (1480), 989 states have internal predecessors, (1480), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-03-30 23:39:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1499 transitions. [2023-03-30 23:39:18,545 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1499 transitions. Word has length 18 [2023-03-30 23:39:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:18,545 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1499 transitions. [2023-03-30 23:39:18,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:39:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1499 transitions. [2023-03-30 23:39:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-03-30 23:39:18,549 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:18,550 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:39:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:39:18,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:18,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1704569022, now seen corresponding path program 1 times [2023-03-30 23:39:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292291635] [2023-03-30 23:39:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:18,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:18,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292291635] [2023-03-30 23:39:18,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292291635] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:18,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815782690] [2023-03-30 23:39:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:18,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:18,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:18,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:18,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:39:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:19,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-30 23:39:19,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:21,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:39:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815782690] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:22,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:39:22,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 13 [2023-03-30 23:39:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495439563] [2023-03-30 23:39:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-30 23:39:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-30 23:39:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:39:22,071 INFO L87 Difference]: Start difference. First operand 1003 states and 1499 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:39:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:26,651 INFO L93 Difference]: Finished difference Result 3854 states and 5832 transitions. [2023-03-30 23:39:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 23:39:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 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 92 [2023-03-30 23:39:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:26,665 INFO L225 Difference]: With dead ends: 3854 [2023-03-30 23:39:26,666 INFO L226 Difference]: Without dead ends: 2857 [2023-03-30 23:39:26,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:39:26,670 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 2442 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 2005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 4679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2005 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:26,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 238 Invalid, 4679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2005 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-03-30 23:39:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2023-03-30 23:39:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2818. [2023-03-30 23:39:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2775 states have (on average 1.461981981981982) internal successors, (4057), 2783 states have internal predecessors, (4057), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (86), 20 states have call predecessors, (86), 13 states have call successors, (86) [2023-03-30 23:39:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4157 transitions. [2023-03-30 23:39:26,788 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 4157 transitions. Word has length 92 [2023-03-30 23:39:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:26,788 INFO L495 AbstractCegarLoop]: Abstraction has 2818 states and 4157 transitions. [2023-03-30 23:39:26,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:39:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 4157 transitions. [2023-03-30 23:39:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-03-30 23:39:26,798 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:26,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:39:26,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:27,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:27,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:27,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash 406004831, now seen corresponding path program 1 times [2023-03-30 23:39:27,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:27,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189779544] [2023-03-30 23:39:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189779544] [2023-03-30 23:39:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189779544] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425211308] [2023-03-30 23:39:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:27,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:27,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:27,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:39:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:27,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:39:27,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:27,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:39:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425211308] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:27,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:39:27,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:39:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736546428] [2023-03-30 23:39:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:27,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:39:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:27,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:39:27,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:39:27,461 INFO L87 Difference]: Start difference. First operand 2818 states and 4157 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:39:29,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:29,831 INFO L93 Difference]: Finished difference Result 8262 states and 12379 transitions. [2023-03-30 23:39:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:39:29,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-03-30 23:39:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:29,865 INFO L225 Difference]: With dead ends: 8262 [2023-03-30 23:39:29,866 INFO L226 Difference]: Without dead ends: 5450 [2023-03-30 23:39:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:39:29,876 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 523 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:29,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 921 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:39:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2023-03-30 23:39:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2023-03-30 23:39:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5448 states, 5367 states have (on average 1.4579839761505498) internal successors, (7825), 5382 states have internal predecessors, (7825), 26 states have call successors, (26), 26 states have call predecessors, (26), 54 states have return successors, (285), 39 states have call predecessors, (285), 25 states have call successors, (285) [2023-03-30 23:39:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 8136 transitions. [2023-03-30 23:39:30,072 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 8136 transitions. Word has length 127 [2023-03-30 23:39:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:30,074 INFO L495 AbstractCegarLoop]: Abstraction has 5448 states and 8136 transitions. [2023-03-30 23:39:30,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:39:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 8136 transitions. [2023-03-30 23:39:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-30 23:39:30,082 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:30,082 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:39:30,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:30,288 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,SelfDestructingSolverStorable2 [2023-03-30 23:39:30,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:30,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 939984817, now seen corresponding path program 1 times [2023-03-30 23:39:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674203025] [2023-03-30 23:39:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:30,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674203025] [2023-03-30 23:39:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674203025] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:30,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:39:30,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:39:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264532801] [2023-03-30 23:39:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:30,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:39:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:39:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:39:30,702 INFO L87 Difference]: Start difference. First operand 5448 states and 8136 transitions. Second operand has 7 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:39:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:34,186 INFO L93 Difference]: Finished difference Result 11019 states and 16566 transitions. [2023-03-30 23:39:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:39:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 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 159 [2023-03-30 23:39:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:34,210 INFO L225 Difference]: With dead ends: 11019 [2023-03-30 23:39:34,210 INFO L226 Difference]: Without dead ends: 5577 [2023-03-30 23:39:34,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:39:34,223 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 2233 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:34,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 281 Invalid, 3608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-30 23:39:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2023-03-30 23:39:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5067. [2023-03-30 23:39:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 4968 states have (on average 1.2552334943639292) internal successors, (6236), 4997 states have internal predecessors, (6236), 24 states have call successors, (24), 24 states have call predecessors, (24), 74 states have return successors, (230), 45 states have call predecessors, (230), 23 states have call successors, (230) [2023-03-30 23:39:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 6490 transitions. [2023-03-30 23:39:34,383 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 6490 transitions. Word has length 159 [2023-03-30 23:39:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:34,384 INFO L495 AbstractCegarLoop]: Abstraction has 5067 states and 6490 transitions. [2023-03-30 23:39:34,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:39:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 6490 transitions. [2023-03-30 23:39:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-03-30 23:39:34,387 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:34,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:39:34,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:34,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1592478098, now seen corresponding path program 1 times [2023-03-30 23:39:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:34,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005343414] [2023-03-30 23:39:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:39:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:34,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005343414] [2023-03-30 23:39:34,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005343414] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62020032] [2023-03-30 23:39:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:34,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:34,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:34,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:34,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:39:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:34,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:39:34,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:39:34,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:39:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62020032] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:34,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:39:34,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:39:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222099093] [2023-03-30 23:39:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:39:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:39:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:34,854 INFO L87 Difference]: Start difference. First operand 5067 states and 6490 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:36,732 INFO L93 Difference]: Finished difference Result 11883 states and 15535 transitions. [2023-03-30 23:39:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:39:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 180 [2023-03-30 23:39:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:36,753 INFO L225 Difference]: With dead ends: 11883 [2023-03-30 23:39:36,754 INFO L226 Difference]: Without dead ends: 6822 [2023-03-30 23:39:36,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:36,763 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 444 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:36,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 561 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-30 23:39:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2023-03-30 23:39:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 5942. [2023-03-30 23:39:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5942 states, 5827 states have (on average 1.238887935472799) internal successors, (7219), 5860 states have internal predecessors, (7219), 28 states have call successors, (28), 28 states have call predecessors, (28), 86 states have return successors, (298), 53 states have call predecessors, (298), 27 states have call successors, (298) [2023-03-30 23:39:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5942 states to 5942 states and 7545 transitions. [2023-03-30 23:39:36,883 INFO L78 Accepts]: Start accepts. Automaton has 5942 states and 7545 transitions. Word has length 180 [2023-03-30 23:39:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 5942 states and 7545 transitions. [2023-03-30 23:39:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5942 states and 7545 transitions. [2023-03-30 23:39:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-03-30 23:39:36,885 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:36,886 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:36,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:37,091 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 [2023-03-30 23:39:37,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:37,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash 325949411, now seen corresponding path program 1 times [2023-03-30 23:39:37,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:37,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327195232] [2023-03-30 23:39:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:39:37,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:37,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327195232] [2023-03-30 23:39:37,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327195232] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:37,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415203555] [2023-03-30 23:39:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:37,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:37,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:37,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:39:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:37,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:39:37,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:37,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:39:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:39:37,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415203555] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:39:37,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:39:37,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:39:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40819962] [2023-03-30 23:39:37,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:39:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:39:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:39:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:39:37,901 INFO L87 Difference]: Start difference. First operand 5942 states and 7545 transitions. Second operand has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 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) [2023-03-30 23:39:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:41,991 INFO L93 Difference]: Finished difference Result 15006 states and 19941 transitions. [2023-03-30 23:39:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 23:39:41,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 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 189 [2023-03-30 23:39:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:42,023 INFO L225 Difference]: With dead ends: 15006 [2023-03-30 23:39:42,023 INFO L226 Difference]: Without dead ends: 9070 [2023-03-30 23:39:42,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:39:42,036 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 4343 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 4304 mSolverCounterSat, 1320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1320 IncrementalHoareTripleChecker+Valid, 4304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:42,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 360 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1320 Valid, 4304 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-30 23:39:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2023-03-30 23:39:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 9049. [2023-03-30 23:39:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9049 states, 8873 states have (on average 1.2340809196438633) internal successors, (10950), 8926 states have internal predecessors, (10950), 42 states have call successors, (42), 42 states have call predecessors, (42), 133 states have return successors, (608), 80 states have call predecessors, (608), 41 states have call successors, (608) [2023-03-30 23:39:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9049 states to 9049 states and 11600 transitions. [2023-03-30 23:39:42,227 INFO L78 Accepts]: Start accepts. Automaton has 9049 states and 11600 transitions. Word has length 189 [2023-03-30 23:39:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:42,227 INFO L495 AbstractCegarLoop]: Abstraction has 9049 states and 11600 transitions. [2023-03-30 23:39:42,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 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) [2023-03-30 23:39:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9049 states and 11600 transitions. [2023-03-30 23:39:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-03-30 23:39:42,235 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:42,236 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:42,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:42,441 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 [2023-03-30 23:39:42,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:42,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash 758827989, now seen corresponding path program 1 times [2023-03-30 23:39:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:42,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642987811] [2023-03-30 23:39:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-03-30 23:39:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642987811] [2023-03-30 23:39:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642987811] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613534477] [2023-03-30 23:39:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:42,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:42,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:42,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:39:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:42,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-30 23:39:42,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-03-30 23:39:43,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:39:43,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613534477] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:43,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:39:43,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:39:43,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472334162] [2023-03-30 23:39:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:43,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:39:43,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:39:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:43,003 INFO L87 Difference]: Start difference. First operand 9049 states and 11600 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:45,191 INFO L93 Difference]: Finished difference Result 19415 states and 24821 transitions. [2023-03-30 23:39:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:39:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 246 [2023-03-30 23:39:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:45,230 INFO L225 Difference]: With dead ends: 19415 [2023-03-30 23:39:45,230 INFO L226 Difference]: Without dead ends: 10372 [2023-03-30 23:39:45,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:45,248 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 428 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:45,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1019 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:39:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10372 states. [2023-03-30 23:39:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10372 to 9496. [2023-03-30 23:39:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9496 states, 9311 states have (on average 1.2333798732681773) internal successors, (11484), 9367 states have internal predecessors, (11484), 44 states have call successors, (44), 44 states have call predecessors, (44), 140 states have return successors, (668), 84 states have call predecessors, (668), 43 states have call successors, (668) [2023-03-30 23:39:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9496 states to 9496 states and 12196 transitions. [2023-03-30 23:39:45,474 INFO L78 Accepts]: Start accepts. Automaton has 9496 states and 12196 transitions. Word has length 246 [2023-03-30 23:39:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:45,475 INFO L495 AbstractCegarLoop]: Abstraction has 9496 states and 12196 transitions. [2023-03-30 23:39:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9496 states and 12196 transitions. [2023-03-30 23:39:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-03-30 23:39:45,479 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:45,480 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:45,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:45,685 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 [2023-03-30 23:39:45,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:45,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1464400604, now seen corresponding path program 1 times [2023-03-30 23:39:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:45,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568502851] [2023-03-30 23:39:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:45,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-03-30 23:39:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568502851] [2023-03-30 23:39:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568502851] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394719489] [2023-03-30 23:39:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:46,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:46,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:39:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:46,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:39:46,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-03-30 23:39:46,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:39:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394719489] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:39:46,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-03-30 23:39:46,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728516181] [2023-03-30 23:39:46,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:46,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:39:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:46,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:39:46,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:46,158 INFO L87 Difference]: Start difference. First operand 9496 states and 12196 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:48,234 INFO L93 Difference]: Finished difference Result 23815 states and 31482 transitions. [2023-03-30 23:39:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:39:48,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 264 [2023-03-30 23:39:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:48,282 INFO L225 Difference]: With dead ends: 23815 [2023-03-30 23:39:48,282 INFO L226 Difference]: Without dead ends: 14325 [2023-03-30 23:39:48,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:39:48,302 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 460 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:48,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 526 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-30 23:39:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14325 states. [2023-03-30 23:39:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14325 to 12142. [2023-03-30 23:39:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 11910 states have (on average 1.2370277078085643) internal successors, (14733), 11981 states have internal predecessors, (14733), 56 states have call successors, (56), 56 states have call predecessors, (56), 175 states have return successors, (1105), 104 states have call predecessors, (1105), 55 states have call successors, (1105) [2023-03-30 23:39:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 15894 transitions. [2023-03-30 23:39:48,550 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 15894 transitions. Word has length 264 [2023-03-30 23:39:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:48,551 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 15894 transitions. [2023-03-30 23:39:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 15894 transitions. [2023-03-30 23:39:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-03-30 23:39:48,556 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:48,557 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:48,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:48,764 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 [2023-03-30 23:39:48,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:48,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 355213453, now seen corresponding path program 1 times [2023-03-30 23:39:48,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551417559] [2023-03-30 23:39:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-03-30 23:39:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-03-30 23:39:49,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:49,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551417559] [2023-03-30 23:39:49,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551417559] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:49,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802473087] [2023-03-30 23:39:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:49,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:49,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:39:49,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:39:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:49,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:39:49,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:39:49,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:39:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:39:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802473087] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:39:49,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:39:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-03-30 23:39:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137848753] [2023-03-30 23:39:49,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:39:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-30 23:39:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-30 23:39:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:39:49,839 INFO L87 Difference]: Start difference. First operand 12142 states and 15894 transitions. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 7 states have internal predecessors, (384), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 23:39:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:54,550 INFO L93 Difference]: Finished difference Result 28618 states and 39915 transitions. [2023-03-30 23:39:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:39:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 7 states have internal predecessors, (384), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 289 [2023-03-30 23:39:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:54,610 INFO L225 Difference]: With dead ends: 28618 [2023-03-30 23:39:54,610 INFO L226 Difference]: Without dead ends: 16018 [2023-03-30 23:39:54,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 587 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:39:54,636 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1310 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 4527 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 4527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:54,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 334 Invalid, 5455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 4527 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-03-30 23:39:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16018 states. [2023-03-30 23:39:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16018 to 15464. [2023-03-30 23:39:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15464 states, 15083 states have (on average 1.176821587217397) internal successors, (17750), 15226 states have internal predecessors, (17750), 70 states have call successors, (70), 70 states have call predecessors, (70), 310 states have return successors, (1964), 167 states have call predecessors, (1964), 69 states have call successors, (1964) [2023-03-30 23:39:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15464 states to 15464 states and 19784 transitions. [2023-03-30 23:39:55,028 INFO L78 Accepts]: Start accepts. Automaton has 15464 states and 19784 transitions. Word has length 289 [2023-03-30 23:39:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:55,029 INFO L495 AbstractCegarLoop]: Abstraction has 15464 states and 19784 transitions. [2023-03-30 23:39:55,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 7 states have internal predecessors, (384), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 23:39:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15464 states and 19784 transitions. [2023-03-30 23:39:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-03-30 23:39:55,036 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:55,036 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:55,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:55,242 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 [2023-03-30 23:39:55,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:55,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1691185433, now seen corresponding path program 1 times [2023-03-30 23:39:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369427755] [2023-03-30 23:39:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:55,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:39:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369427755] [2023-03-30 23:39:55,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369427755] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191311557] [2023-03-30 23:39:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:55,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:55,865 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) [2023-03-30 23:39:55,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:39:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:55,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-30 23:39:56,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-03-30 23:39:56,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:39:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191311557] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:39:56,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:39:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-30 23:39:56,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847440998] [2023-03-30 23:39:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:39:56,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:39:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:39:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:39:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:39:56,046 INFO L87 Difference]: Start difference. First operand 15464 states and 19784 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:39:57,762 INFO L93 Difference]: Finished difference Result 17656 states and 22099 transitions. [2023-03-30 23:39:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:39:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 303 [2023-03-30 23:39:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:39:57,817 INFO L225 Difference]: With dead ends: 17656 [2023-03-30 23:39:57,817 INFO L226 Difference]: Without dead ends: 17654 [2023-03-30 23:39:57,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:39:57,827 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 465 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:39:57,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 450 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:39:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17654 states. [2023-03-30 23:39:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17654 to 15464. [2023-03-30 23:39:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15464 states, 15083 states have (on average 1.176821587217397) internal successors, (17750), 15226 states have internal predecessors, (17750), 70 states have call successors, (70), 70 states have call predecessors, (70), 310 states have return successors, (1964), 167 states have call predecessors, (1964), 69 states have call successors, (1964) [2023-03-30 23:39:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15464 states to 15464 states and 19784 transitions. [2023-03-30 23:39:58,205 INFO L78 Accepts]: Start accepts. Automaton has 15464 states and 19784 transitions. Word has length 303 [2023-03-30 23:39:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:39:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 15464 states and 19784 transitions. [2023-03-30 23:39:58,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:39:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 15464 states and 19784 transitions. [2023-03-30 23:39:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-03-30 23:39:58,212 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:39:58,212 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:39:58,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:39:58,418 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 [2023-03-30 23:39:58,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:39:58,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:39:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash 18763727, now seen corresponding path program 1 times [2023-03-30 23:39:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:39:58,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559496363] [2023-03-30 23:39:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:39:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:39:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:39:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-30 23:39:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-03-30 23:39:59,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:39:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559496363] [2023-03-30 23:39:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559496363] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:39:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300648371] [2023-03-30 23:39:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:39:59,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:39:59,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:39:59,375 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) [2023-03-30 23:39:59,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:39:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:39:59,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-30 23:39:59,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:39:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-03-30 23:39:59,928 INFO L327 TraceCheckSpWp]: Computing backward predicates...