/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:34:50,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:34:50,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:34:50,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:34:50,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:34:50,570 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:34:50,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:34:50,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:34:50,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:34:50,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:34:50,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:34:50,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:34:50,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:34:50,571 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:34:50,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:34:50,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:34:50,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:34:50,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:34:50,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:34:50,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:34:50,575 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:34:50,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:34:50,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:34:50,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:34:50,729 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:34:50,730 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:34:50,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2023-04-01 23:34:51,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:34:51,924 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:34:51,924 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2023-04-01 23:34:51,940 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80ce56c28/98b3d3786c634bb6ab649d737363e703/FLAGf61151a1d [2023-04-01 23:34:51,951 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80ce56c28/98b3d3786c634bb6ab649d737363e703 [2023-04-01 23:34:51,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:34:51,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:34:51,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:34:51,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:34:51,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:34:51,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:34:51" (1/1) ... [2023-04-01 23:34:51,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da9aace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:51, skipping insertion in model container [2023-04-01 23:34:51,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:34:51" (1/1) ... [2023-04-01 23:34:51,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:34:52,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:34:52,151 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_label54.c[2072,2085] [2023-04-01 23:34:52,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:34:52,618 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:34:52,635 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_label54.c[2072,2085] [2023-04-01 23:34:52,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:34:52,813 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:34:52,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52 WrapperNode [2023-04-01 23:34:52,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:34:52,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:34:52,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:34:52,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:34:52,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:52,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:34:52,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:34:52,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:34:52,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:34:52,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (1/1) ... [2023-04-01 23:34:53,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:34:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:34:53,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:34:53,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:34:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:34:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:34:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:34:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:34:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:34:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:34:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:34:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:34:53,138 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:34:53,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:34:55,342 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:34:55,356 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:34:55,356 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:34:55,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:34:55 BoogieIcfgContainer [2023-04-01 23:34:55,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:34:55,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:34:55,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:34:55,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:34:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:34:51" (1/3) ... [2023-04-01 23:34:55,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d3c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:34:55, skipping insertion in model container [2023-04-01 23:34:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:52" (2/3) ... [2023-04-01 23:34:55,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d3c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:34:55, skipping insertion in model container [2023-04-01 23:34:55,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:34:55" (3/3) ... [2023-04-01 23:34:55,399 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2023-04-01 23:34:55,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:34:55,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:34:55,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:34:55,456 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;@5042abd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:34:55,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:34:55,461 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) [2023-04-01 23:34:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 23:34:55,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:34:55,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:34:55,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:34:55,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:34:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash -961747646, now seen corresponding path program 1 times [2023-04-01 23:34:55,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:34:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406998975] [2023-04-01 23:34:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:34:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:34:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:34:55,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:34:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:34:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:34:55,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:34:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406998975] [2023-04-01 23:34:55,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406998975] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:34:55,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:34:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:34:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517691829] [2023-04-01 23:34:55,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:34:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:34:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:34:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:34:55,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:34:55,906 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:34:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:34:59,421 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2023-04-01 23:34:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:34:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 19 [2023-04-01 23:34:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:34:59,436 INFO L225 Difference]: With dead ends: 1692 [2023-04-01 23:34:59,436 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 23:34:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:34:59,446 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:34:59,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 135 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:34:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 23:34:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2023-04-01 23:34:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 986 states have (on average 1.5446247464503042) internal successors, (1523), 988 states have internal predecessors, (1523), 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) [2023-04-01 23:34:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2023-04-01 23:34:59,531 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 19 [2023-04-01 23:34:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:34:59,532 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2023-04-01 23:34:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:34:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2023-04-01 23:34:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 23:34:59,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:34:59,534 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:34:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:34:59,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:34:59,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:34:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash 336807591, now seen corresponding path program 1 times [2023-04-01 23:34:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:34:59,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761572460] [2023-04-01 23:34:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:34:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:34:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:34:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:34:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:34:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:34:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:34:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:34:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:34:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761572460] [2023-04-01 23:34:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761572460] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:34:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:34:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:34:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515074654] [2023-04-01 23:34:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:34:59,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:34:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:34:59,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:34:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:34:59,750 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:03,298 INFO L93 Difference]: Finished difference Result 2962 states and 4571 transitions. [2023-04-01 23:35:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:35:03,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 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 90 [2023-04-01 23:35:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:03,307 INFO L225 Difference]: With dead ends: 2962 [2023-04-01 23:35:03,308 INFO L226 Difference]: Without dead ends: 1966 [2023-04-01 23:35:03,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:35:03,314 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1610 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 3480 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 3480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:03,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 332 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 3480 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:35:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2023-04-01 23:35:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1914. [2023-04-01 23:35:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1880 states have (on average 1.2920212765957446) internal successors, (2429), 1888 states have internal predecessors, (2429), 10 states have call successors, (10), 10 states have call predecessors, (10), 23 states have return successors, (43), 15 states have call predecessors, (43), 9 states have call successors, (43) [2023-04-01 23:35:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2482 transitions. [2023-04-01 23:35:03,387 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2482 transitions. Word has length 90 [2023-04-01 23:35:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:03,388 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2482 transitions. [2023-04-01 23:35:03,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2482 transitions. [2023-04-01 23:35:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 23:35:03,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:03,391 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:35:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:35:03,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:03,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1315560107, now seen corresponding path program 1 times [2023-04-01 23:35:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:03,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044448341] [2023-04-01 23:35:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:03,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044448341] [2023-04-01 23:35:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044448341] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115370665] [2023-04-01 23:35:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:03,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:03,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:03,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:35:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:35:03,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:05,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115370665] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:35:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 13 [2023-04-01 23:35:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036669565] [2023-04-01 23:35:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:06,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 23:35:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 23:35:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:35:06,127 INFO L87 Difference]: Start difference. First operand 1914 states and 2482 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:10,160 INFO L93 Difference]: Finished difference Result 7446 states and 9794 transitions. [2023-04-01 23:35:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 23:35:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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 93 [2023-04-01 23:35:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:10,181 INFO L225 Difference]: With dead ends: 7446 [2023-04-01 23:35:10,181 INFO L226 Difference]: Without dead ends: 5538 [2023-04-01 23:35:10,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:35:10,187 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 2984 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 2873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2873 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:10,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 155 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2873 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 23:35:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2023-04-01 23:35:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5036. [2023-04-01 23:35:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 4946 states have (on average 1.3022644561261625) internal successors, (6441), 4971 states have internal predecessors, (6441), 24 states have call successors, (24), 24 states have call predecessors, (24), 65 states have return successors, (218), 40 states have call predecessors, (218), 23 states have call successors, (218) [2023-04-01 23:35:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 6683 transitions. [2023-04-01 23:35:10,347 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 6683 transitions. Word has length 93 [2023-04-01 23:35:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 6683 transitions. [2023-04-01 23:35:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 6683 transitions. [2023-04-01 23:35:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-01 23:35:10,359 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:10,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:10,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:35:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:10,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:10,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash -545311722, now seen corresponding path program 1 times [2023-04-01 23:35:10,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:10,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035785406] [2023-04-01 23:35:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:10,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 23:35:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035785406] [2023-04-01 23:35:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035785406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220374278] [2023-04-01 23:35:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:10,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:10,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:10,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:35:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:11,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 23:35:11,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:35:11,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220374278] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:11,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:35:11,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:35:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562889126] [2023-04-01 23:35:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:35:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:35:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:35:11,050 INFO L87 Difference]: Start difference. First operand 5036 states and 6683 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:13,006 INFO L93 Difference]: Finished difference Result 13602 states and 18580 transitions. [2023-04-01 23:35:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:35:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 178 [2023-04-01 23:35:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:13,025 INFO L225 Difference]: With dead ends: 13602 [2023-04-01 23:35:13,025 INFO L226 Difference]: Without dead ends: 6333 [2023-04-01 23:35:13,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:35:13,035 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 482 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:13,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 937 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 23:35:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2023-04-01 23:35:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6326. [2023-04-01 23:35:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 6221 states have (on average 1.2506027969779778) internal successors, (7780), 6246 states have internal predecessors, (7780), 30 states have call successors, (30), 30 states have call predecessors, (30), 74 states have return successors, (348), 49 states have call predecessors, (348), 29 states have call successors, (348) [2023-04-01 23:35:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 8158 transitions. [2023-04-01 23:35:13,150 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 8158 transitions. Word has length 178 [2023-04-01 23:35:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:13,154 INFO L495 AbstractCegarLoop]: Abstraction has 6326 states and 8158 transitions. [2023-04-01 23:35:13,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 8158 transitions. [2023-04-01 23:35:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-04-01 23:35:13,156 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:13,156 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:13,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:35:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:35:13,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:13,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash -280250846, now seen corresponding path program 1 times [2023-04-01 23:35:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:13,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467315431] [2023-04-01 23:35:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-04-01 23:35:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467315431] [2023-04-01 23:35:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467315431] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176245233] [2023-04-01 23:35:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:13,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:13,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:13,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:35:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:13,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:13,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-01 23:35:13,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:35:13,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176245233] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:13,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:35:13,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:35:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015379952] [2023-04-01 23:35:13,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:13,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:35:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:35:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:35:13,683 INFO L87 Difference]: Start difference. First operand 6326 states and 8158 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:15,020 INFO L93 Difference]: Finished difference Result 16598 states and 21893 transitions. [2023-04-01 23:35:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:35:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 184 [2023-04-01 23:35:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:15,044 INFO L225 Difference]: With dead ends: 16598 [2023-04-01 23:35:15,045 INFO L226 Difference]: Without dead ends: 8958 [2023-04-01 23:35:15,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:35:15,056 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 468 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:15,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 783 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:35:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2023-04-01 23:35:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 8955. [2023-04-01 23:35:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8955 states, 8816 states have (on average 1.2129083484573502) internal successors, (10693), 8846 states have internal predecessors, (10693), 42 states have call successors, (42), 42 states have call predecessors, (42), 96 states have return successors, (593), 66 states have call predecessors, (593), 41 states have call successors, (593) [2023-04-01 23:35:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 11328 transitions. [2023-04-01 23:35:15,194 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 11328 transitions. Word has length 184 [2023-04-01 23:35:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 8955 states and 11328 transitions. [2023-04-01 23:35:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 11328 transitions. [2023-04-01 23:35:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-04-01 23:35:15,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:15,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:15,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:35:15,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:15,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:15,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:15,404 INFO L85 PathProgramCache]: Analyzing trace with hash 541145618, now seen corresponding path program 1 times [2023-04-01 23:35:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:15,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791972618] [2023-04-01 23:35:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:35:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791972618] [2023-04-01 23:35:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791972618] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282426354] [2023-04-01 23:35:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:15,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:15,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:15,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:15,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:35:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:15,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:15,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282426354] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:35:16,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:35:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:35:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500684798] [2023-04-01 23:35:16,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:35:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:35:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:35:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:35:16,035 INFO L87 Difference]: Start difference. First operand 8955 states and 11328 transitions. Second operand has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 9 states have internal predecessors, (331), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:35:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:19,430 INFO L93 Difference]: Finished difference Result 23228 states and 30512 transitions. [2023-04-01 23:35:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:35:19,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 9 states have internal predecessors, (331), 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 185 [2023-04-01 23:35:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:19,462 INFO L225 Difference]: With dead ends: 23228 [2023-04-01 23:35:19,462 INFO L226 Difference]: Without dead ends: 14279 [2023-04-01 23:35:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:35:19,478 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 2989 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 4781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:19,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2989 Valid, 283 Invalid, 4781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 23:35:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14279 states. [2023-04-01 23:35:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14279 to 14267. [2023-04-01 23:35:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14267 states, 14028 states have (on average 1.1790704305674367) internal successors, (16540), 14089 states have internal predecessors, (16540), 66 states have call successors, (66), 66 states have call predecessors, (66), 172 states have return successors, (1264), 111 states have call predecessors, (1264), 65 states have call successors, (1264) [2023-04-01 23:35:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14267 states to 14267 states and 17870 transitions. [2023-04-01 23:35:19,707 INFO L78 Accepts]: Start accepts. Automaton has 14267 states and 17870 transitions. Word has length 185 [2023-04-01 23:35:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:19,708 INFO L495 AbstractCegarLoop]: Abstraction has 14267 states and 17870 transitions. [2023-04-01 23:35:19,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 9 states have internal predecessors, (331), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:35:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 14267 states and 17870 transitions. [2023-04-01 23:35:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-04-01 23:35:19,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:19,714 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:19,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:35:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:19,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:19,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1858412180, now seen corresponding path program 1 times [2023-04-01 23:35:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089158230] [2023-04-01 23:35:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-04-01 23:35:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-04-01 23:35:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089158230] [2023-04-01 23:35:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089158230] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726423007] [2023-04-01 23:35:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:20,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:20,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:20,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:20,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:35:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:35:20,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:35:20,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:35:21,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726423007] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:35:21,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:35:21,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:35:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9440904] [2023-04-01 23:35:21,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:35:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:35:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:35:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:35:21,175 INFO L87 Difference]: Start difference. First operand 14267 states and 17870 transitions. Second operand has 10 states, 10 states have (on average 39.6) internal successors, (396), 8 states have internal predecessors, (396), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:35:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:28,266 INFO L93 Difference]: Finished difference Result 45967 states and 60567 transitions. [2023-04-01 23:35:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 23:35:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 39.6) internal successors, (396), 8 states have internal predecessors, (396), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 393 [2023-04-01 23:35:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:28,339 INFO L225 Difference]: With dead ends: 45967 [2023-04-01 23:35:28,340 INFO L226 Difference]: Without dead ends: 31703 [2023-04-01 23:35:28,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2023-04-01 23:35:28,365 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 3785 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 7963 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 8865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 7963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:28,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 519 Invalid, 8865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 7963 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 23:35:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31703 states. [2023-04-01 23:35:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31703 to 29036. [2023-04-01 23:35:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29036 states, 28469 states have (on average 1.1388879131687097) internal successors, (32423), 28658 states have internal predecessors, (32423), 132 states have call successors, (132), 132 states have call predecessors, (132), 434 states have return successors, (4720), 245 states have call predecessors, (4720), 131 states have call successors, (4720) [2023-04-01 23:35:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29036 states to 29036 states and 37275 transitions. [2023-04-01 23:35:28,879 INFO L78 Accepts]: Start accepts. Automaton has 29036 states and 37275 transitions. Word has length 393 [2023-04-01 23:35:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:28,879 INFO L495 AbstractCegarLoop]: Abstraction has 29036 states and 37275 transitions. [2023-04-01 23:35:28,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.6) internal successors, (396), 8 states have internal predecessors, (396), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:35:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29036 states and 37275 transitions. [2023-04-01 23:35:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-04-01 23:35:28,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:28,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:28,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:35:29,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:29,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:29,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -232924083, now seen corresponding path program 1 times [2023-04-01 23:35:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138580084] [2023-04-01 23:35:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:29,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:30,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:35:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 23:35:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138580084] [2023-04-01 23:35:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138580084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65566483] [2023-04-01 23:35:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:30,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:30,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:35:30,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:35:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:30,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 23:35:30,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 23:35:31,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65566483] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:31,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:35:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-04-01 23:35:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891361201] [2023-04-01 23:35:31,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:35:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:35:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:35:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:35:31,961 INFO L87 Difference]: Start difference. First operand 29036 states and 37275 transitions. Second operand has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 9 states have internal predecessors, (724), 6 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-01 23:35:36,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:39,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:41,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:43,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:45,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:48,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:50,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:53,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:55,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:57,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:00,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:02,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:04,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:06,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:08,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:11,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:14,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:16,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:18,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:20,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:22,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:23,026 INFO L93 Difference]: Finished difference Result 79931 states and 105634 transitions. [2023-04-01 23:36:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-01 23:36:23,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 9 states have internal predecessors, (724), 6 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 462 [2023-04-01 23:36:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:23,168 INFO L225 Difference]: With dead ends: 79931 [2023-04-01 23:36:23,169 INFO L226 Difference]: Without dead ends: 50004 [2023-04-01 23:36:23,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 830 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2023-04-01 23:36:23,208 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 4210 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 7172 mSolverCounterSat, 818 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 8011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 7172 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:23,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4216 Valid, 442 Invalid, 8011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 7172 Invalid, 21 Unknown, 0 Unchecked, 50.3s Time] [2023-04-01 23:36:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50004 states. [2023-04-01 23:36:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50004 to 46253. [2023-04-01 23:36:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46253 states, 45394 states have (on average 1.1047274970260388) internal successors, (50148), 45676 states have internal predecessors, (50148), 214 states have call successors, (214), 210 states have call predecessors, (214), 644 states have return successors, (6640), 366 states have call predecessors, (6640), 213 states have call successors, (6640) [2023-04-01 23:36:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46253 states to 46253 states and 57002 transitions. [2023-04-01 23:36:23,982 INFO L78 Accepts]: Start accepts. Automaton has 46253 states and 57002 transitions. Word has length 462 [2023-04-01 23:36:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 46253 states and 57002 transitions. [2023-04-01 23:36:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 9 states have internal predecessors, (724), 6 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-01 23:36:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 46253 states and 57002 transitions. [2023-04-01 23:36:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-04-01 23:36:24,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:24,009 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:24,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:24,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:24,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash -194948664, now seen corresponding path program 1 times [2023-04-01 23:36:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:24,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884423957] [2023-04-01 23:36:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:36:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-04-01 23:36:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-04-01 23:36:25,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884423957] [2023-04-01 23:36:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884423957] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511510307] [2023-04-01 23:36:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:25,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:25,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:25,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:25,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:36:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:25,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:25,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-04-01 23:36:25,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-04-01 23:36:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511510307] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:36:26,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:36:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 10 [2023-04-01 23:36:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639960586] [2023-04-01 23:36:26,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:36:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:36:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:36:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:36:26,373 INFO L87 Difference]: Start difference. First operand 46253 states and 57002 transitions. Second operand has 10 states, 10 states have (on average 89.5) internal successors, (895), 8 states have internal predecessors, (895), 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) [2023-04-01 23:36:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:30,345 INFO L93 Difference]: Finished difference Result 100461 states and 125287 transitions. [2023-04-01 23:36:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:36:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 89.5) internal successors, (895), 8 states have internal predecessors, (895), 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 612 [2023-04-01 23:36:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:30,475 INFO L225 Difference]: With dead ends: 100461 [2023-04-01 23:36:30,475 INFO L226 Difference]: Without dead ends: 52877 [2023-04-01 23:36:30,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1234 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:36:30,514 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1736 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:30,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 312 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:36:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52877 states. [2023-04-01 23:36:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52877 to 51548. [2023-04-01 23:36:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51548 states, 50591 states have (on average 1.0948785357079323) internal successors, (55391), 50915 states have internal predecessors, (55391), 238 states have call successors, (238), 234 states have call predecessors, (238), 718 states have return successors, (7207), 398 states have call predecessors, (7207), 237 states have call successors, (7207) [2023-04-01 23:36:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51548 states to 51548 states and 62836 transitions. [2023-04-01 23:36:31,491 INFO L78 Accepts]: Start accepts. Automaton has 51548 states and 62836 transitions. Word has length 612 [2023-04-01 23:36:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:31,492 INFO L495 AbstractCegarLoop]: Abstraction has 51548 states and 62836 transitions. [2023-04-01 23:36:31,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.5) internal successors, (895), 8 states have internal predecessors, (895), 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) [2023-04-01 23:36:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 51548 states and 62836 transitions. [2023-04-01 23:36:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-04-01 23:36:31,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:31,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:31,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:31,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:31,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:31,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1512070574, now seen corresponding path program 1 times [2023-04-01 23:36:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:31,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532193811] [2023-04-01 23:36:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:36:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:36:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 23:36:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:36:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 224 proven. 190 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-04-01 23:36:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532193811] [2023-04-01 23:36:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532193811] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560252569] [2023-04-01 23:36:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:32,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:36:32,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:36:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:36:33,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 469 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-04-01 23:36:33,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560252569] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:35,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:36:35,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-04-01 23:36:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030090907] [2023-04-01 23:36:35,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:36:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:36:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:35,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:36:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:36:35,150 INFO L87 Difference]: Start difference. First operand 51548 states and 62836 transitions. Second operand has 15 states, 15 states have (on average 67.8) internal successors, (1017), 13 states have internal predecessors, (1017), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:36:42,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:45,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:47,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:50,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:52,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:54,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:59,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:01,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:04,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:06,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:10,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:12,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:14,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:16,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:18,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:21,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:24,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:28,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:30,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:32,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:35,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:37,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:39,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:42,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:44,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:46,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:48,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:51,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:54,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:56,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:58,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:01,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:04,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:06,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:08,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:11,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:16,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:18,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:18,888 INFO L93 Difference]: Finished difference Result 132413 states and 162751 transitions. [2023-04-01 23:38:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-04-01 23:38:18,896 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 67.8) internal successors, (1017), 13 states have internal predecessors, (1017), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 654 [2023-04-01 23:38:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:19,277 INFO L225 Difference]: With dead ends: 132413 [2023-04-01 23:38:19,278 INFO L226 Difference]: Without dead ends: 83959 [2023-04-01 23:38:19,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1309 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4609 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1773, Invalid=10882, Unknown=1, NotChecked=0, Total=12656 [2023-04-01 23:38:19,365 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 8195 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 16172 mSolverCounterSat, 1711 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8195 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 17922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1711 IncrementalHoareTripleChecker+Valid, 16172 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:19,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8195 Valid, 953 Invalid, 17922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1711 Valid, 16172 Invalid, 39 Unknown, 0 Unchecked, 98.6s Time] [2023-04-01 23:38:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83959 states. [2023-04-01 23:38:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83959 to 77005. [2023-04-01 23:38:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77005 states, 75687 states have (on average 1.0855364857901622) internal successors, (82161), 76103 states have internal predecessors, (82161), 354 states have call successors, (354), 350 states have call predecessors, (354), 963 states have return successors, (9793), 551 states have call predecessors, (9793), 353 states have call successors, (9793) [2023-04-01 23:38:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77005 states to 77005 states and 92308 transitions. [2023-04-01 23:38:20,703 INFO L78 Accepts]: Start accepts. Automaton has 77005 states and 92308 transitions. Word has length 654 [2023-04-01 23:38:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:20,704 INFO L495 AbstractCegarLoop]: Abstraction has 77005 states and 92308 transitions. [2023-04-01 23:38:20,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.8) internal successors, (1017), 13 states have internal predecessors, (1017), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:38:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 77005 states and 92308 transitions. [2023-04-01 23:38:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-04-01 23:38:20,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:20,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:20,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:20,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:38:20,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:20,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1156544738, now seen corresponding path program 1 times [2023-04-01 23:38:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510930074] [2023-04-01 23:38:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:38:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:38:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-04-01 23:38:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 57 proven. 437 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 23:38:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:23,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510930074] [2023-04-01 23:38:23,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510930074] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:23,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110970316] [2023-04-01 23:38:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:23,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:23,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:23,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:23,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:38:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-01 23:38:23,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 395 proven. 86 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-04-01 23:38:24,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 60 proven. 439 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 23:38:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110970316] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:26,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2023-04-01 23:38:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036678606] [2023-04-01 23:38:26,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:26,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-01 23:38:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-01 23:38:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-04-01 23:38:26,845 INFO L87 Difference]: Start difference. First operand 77005 states and 92308 transitions. Second operand has 27 states, 27 states have (on average 49.96296296296296) internal successors, (1349), 25 states have internal predecessors, (1349), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:38:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:43,728 INFO L93 Difference]: Finished difference Result 150517 states and 181354 transitions. [2023-04-01 23:38:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-01 23:38:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 49.96296296296296) internal successors, (1349), 25 states have internal predecessors, (1349), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 669 [2023-04-01 23:38:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:43,946 INFO L225 Difference]: With dead ends: 150517 [2023-04-01 23:38:43,947 INFO L226 Difference]: Without dead ends: 73516 [2023-04-01 23:38:44,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1383 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1345, Invalid=6137, Unknown=0, NotChecked=0, Total=7482 [2023-04-01 23:38:44,103 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 12531 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 13700 mSolverCounterSat, 1698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12539 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 15398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1698 IncrementalHoareTripleChecker+Valid, 13700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:44,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12539 Valid, 1270 Invalid, 15398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1698 Valid, 13700 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-04-01 23:38:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73516 states. [2023-04-01 23:38:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73516 to 72541. [2023-04-01 23:38:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72541 states, 71296 states have (on average 1.0879993267504489) internal successors, (77570), 71695 states have internal predecessors, (77570), 330 states have call successors, (330), 330 states have call predecessors, (330), 914 states have return successors, (9205), 515 states have call predecessors, (9205), 329 states have call successors, (9205) [2023-04-01 23:38:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72541 states to 72541 states and 87105 transitions. [2023-04-01 23:38:45,490 INFO L78 Accepts]: Start accepts. Automaton has 72541 states and 87105 transitions. Word has length 669 [2023-04-01 23:38:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:45,490 INFO L495 AbstractCegarLoop]: Abstraction has 72541 states and 87105 transitions. [2023-04-01 23:38:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 49.96296296296296) internal successors, (1349), 25 states have internal predecessors, (1349), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:38:45,491 INFO L276 IsEmpty]: Start isEmpty. Operand 72541 states and 87105 transitions. [2023-04-01 23:38:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-04-01 23:38:45,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:45,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:45,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:45,738 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:45,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -733438859, now seen corresponding path program 1 times [2023-04-01 23:38:45,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:45,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324145608] [2023-04-01 23:38:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:45,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:38:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:38:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-01 23:38:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2023-04-01 23:38:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 248 proven. 181 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-04-01 23:38:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324145608] [2023-04-01 23:38:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324145608] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27379411] [2023-04-01 23:38:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:46,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:46,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:46,756 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:38:46,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:38:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:38:46,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-04-01 23:38:47,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 325 proven. 83 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-04-01 23:38:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27379411] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:47,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:47,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:38:47,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964424662] [2023-04-01 23:38:47,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:38:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:38:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:38:47,455 INFO L87 Difference]: Start difference. First operand 72541 states and 87105 transitions. Second operand has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 10 states have internal predecessors, (982), 5 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12)