/usr/lib/jvm/java-1.11.0-openjdk-amd64/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 --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:07:22,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:07:22,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:07:22,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:07:22,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:07:22,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:07:22,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:07:22,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:07:22,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:07:22,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:07:22,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:07:22,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:07:22,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:07:22,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:07:22,763 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:07:22,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:07:22,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:07:22,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:07:22,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:07:22,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:07:22,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:07:22,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:07:22,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:07:22,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:07:22,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:07:22,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:07:22,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:07:22,766 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:07:22,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:07:22,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:07:22,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:07:22,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:07:22,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:07:22,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:07:22,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:07:22,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:07:22,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:07:22,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:07:22,769 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:07:22,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:07:22,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:07:22,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:07:22,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:07:22,948 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:07:22,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:07:24,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:07:24,292 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:07:24,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:07:24,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a9ab510/83bc98d82986468b86526cb9e8703e85/FLAG1e55f33ea [2023-12-20 01:07:24,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a9ab510/83bc98d82986468b86526cb9e8703e85 [2023-12-20 01:07:24,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:07:24,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:07:24,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:07:24,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:07:24,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:07:24,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2056c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24, skipping insertion in model container [2023-12-20 01:07:24,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:07:24,456 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-20 01:07:24,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:07:24,469 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:07:24,507 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-20 01:07:24,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:07:24,517 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:07:24,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24 WrapperNode [2023-12-20 01:07:24,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:07:24,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:07:24,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:07:24,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:07:24,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,552 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 217 [2023-12-20 01:07:24,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:07:24,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:07:24,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:07:24,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:07:24,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,578 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:07:24,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:07:24,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:07:24,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:07:24,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:07:24,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (1/1) ... [2023-12-20 01:07:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:07:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:24,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:07:24,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:07:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:07:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:07:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:07:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:07:24,707 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:07:24,708 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:07:24,912 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:07:24,937 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:07:24,937 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:07:24,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:07:24 BoogieIcfgContainer [2023-12-20 01:07:24,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:07:24,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:07:24,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:07:24,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:07:24,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:07:24" (1/3) ... [2023-12-20 01:07:24,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bcc2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:07:24, skipping insertion in model container [2023-12-20 01:07:24,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:07:24" (2/3) ... [2023-12-20 01:07:24,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bcc2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:07:24, skipping insertion in model container [2023-12-20 01:07:24,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:07:24" (3/3) ... [2023-12-20 01:07:24,958 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:07:24,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:07:24,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:07:25,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:07:25,013 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=LoopHeads, 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;@1433811b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:07:25,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:07:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 01:07:25,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:25,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:25,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:25,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -417268953, now seen corresponding path program 1 times [2023-12-20 01:07:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:25,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568364801] [2023-12-20 01:07:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:25,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568364801] [2023-12-20 01:07:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568364801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:25,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:25,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:07:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574268601] [2023-12-20 01:07:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:07:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:07:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:07:25,223 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:25,299 INFO L93 Difference]: Finished difference Result 81 states and 137 transitions. [2023-12-20 01:07:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:07:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 01:07:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:25,310 INFO L225 Difference]: With dead ends: 81 [2023-12-20 01:07:25,310 INFO L226 Difference]: Without dead ends: 49 [2023-12-20 01:07:25,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:07:25,315 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:25,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-20 01:07:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-20 01:07:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2023-12-20 01:07:25,349 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 16 [2023-12-20 01:07:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:25,349 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2023-12-20 01:07:25,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2023-12-20 01:07:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 01:07:25,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:25,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:07:25,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:25,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1004074967, now seen corresponding path program 1 times [2023-12-20 01:07:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913499963] [2023-12-20 01:07:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913499963] [2023-12-20 01:07:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913499963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:07:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375722583] [2023-12-20 01:07:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:07:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:07:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:07:25,555 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:25,600 INFO L93 Difference]: Finished difference Result 81 states and 131 transitions. [2023-12-20 01:07:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:07:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 01:07:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:25,603 INFO L225 Difference]: With dead ends: 81 [2023-12-20 01:07:25,603 INFO L226 Difference]: Without dead ends: 49 [2023-12-20 01:07:25,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:07:25,606 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:25,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-20 01:07:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-20 01:07:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-12-20 01:07:25,616 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2023-12-20 01:07:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:25,616 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-12-20 01:07:25,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-12-20 01:07:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 01:07:25,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:25,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:07:25,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:25,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash 871528204, now seen corresponding path program 1 times [2023-12-20 01:07:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475687182] [2023-12-20 01:07:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475687182] [2023-12-20 01:07:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475687182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:25,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:25,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:07:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020894384] [2023-12-20 01:07:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:25,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:07:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:07:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:07:25,791 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:25,892 INFO L93 Difference]: Finished difference Result 223 states and 342 transitions. [2023-12-20 01:07:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:07:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 01:07:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:25,894 INFO L225 Difference]: With dead ends: 223 [2023-12-20 01:07:25,894 INFO L226 Difference]: Without dead ends: 194 [2023-12-20 01:07:25,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:07:25,895 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 264 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:25,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 402 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:07:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-20 01:07:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 76. [2023-12-20 01:07:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 75 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2023-12-20 01:07:25,903 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 31 [2023-12-20 01:07:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:25,904 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2023-12-20 01:07:25,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2023-12-20 01:07:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 01:07:25,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:25,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:25,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:07:25,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:25,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -739726020, now seen corresponding path program 1 times [2023-12-20 01:07:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954524721] [2023-12-20 01:07:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954524721] [2023-12-20 01:07:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954524721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246911375] [2023-12-20 01:07:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,002 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,022 INFO L93 Difference]: Finished difference Result 177 states and 268 transitions. [2023-12-20 01:07:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 01:07:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,025 INFO L225 Difference]: With dead ends: 177 [2023-12-20 01:07:26,025 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 01:07:26,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,031 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 01:07:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-20 01:07:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 118 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2023-12-20 01:07:26,039 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 33 [2023-12-20 01:07:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,039 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2023-12-20 01:07:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2023-12-20 01:07:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 01:07:26,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:07:26,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -737581068, now seen corresponding path program 1 times [2023-12-20 01:07:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624157752] [2023-12-20 01:07:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624157752] [2023-12-20 01:07:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624157752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:07:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716246966] [2023-12-20 01:07:26,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:07:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:07:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:07:26,216 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,264 INFO L93 Difference]: Finished difference Result 220 states and 331 transitions. [2023-12-20 01:07:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:07:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 01:07:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,265 INFO L225 Difference]: With dead ends: 220 [2023-12-20 01:07:26,265 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 01:07:26,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:07:26,269 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 97 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 01:07:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-20 01:07:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4661016949152543) internal successors, (173), 118 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 173 transitions. [2023-12-20 01:07:26,288 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 173 transitions. Word has length 33 [2023-12-20 01:07:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,289 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 173 transitions. [2023-12-20 01:07:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 173 transitions. [2023-12-20 01:07:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:07:26,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:26,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:07:26,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1404220512, now seen corresponding path program 1 times [2023-12-20 01:07:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063966574] [2023-12-20 01:07:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063966574] [2023-12-20 01:07:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063966574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:07:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880232819] [2023-12-20 01:07:26,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:07:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:07:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:07:26,430 INFO L87 Difference]: Start difference. First operand 119 states and 173 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,451 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2023-12-20 01:07:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:07:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 01:07:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,453 INFO L225 Difference]: With dead ends: 127 [2023-12-20 01:07:26,453 INFO L226 Difference]: Without dead ends: 125 [2023-12-20 01:07:26,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:07:26,455 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-20 01:07:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-12-20 01:07:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 122 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 176 transitions. [2023-12-20 01:07:26,472 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 176 transitions. Word has length 34 [2023-12-20 01:07:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,472 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 176 transitions. [2023-12-20 01:07:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 176 transitions. [2023-12-20 01:07:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:07:26,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:26,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:07:26,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1768252524, now seen corresponding path program 1 times [2023-12-20 01:07:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139538138] [2023-12-20 01:07:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139538138] [2023-12-20 01:07:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139538138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348896888] [2023-12-20 01:07:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,509 INFO L87 Difference]: Start difference. First operand 123 states and 176 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,520 INFO L93 Difference]: Finished difference Result 237 states and 349 transitions. [2023-12-20 01:07:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 01:07:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,522 INFO L225 Difference]: With dead ends: 237 [2023-12-20 01:07:26,522 INFO L226 Difference]: Without dead ends: 177 [2023-12-20 01:07:26,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,524 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-20 01:07:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-20 01:07:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4540229885057472) internal successors, (253), 174 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 253 transitions. [2023-12-20 01:07:26,533 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 253 transitions. Word has length 35 [2023-12-20 01:07:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,534 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 253 transitions. [2023-12-20 01:07:26,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 253 transitions. [2023-12-20 01:07:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:07:26,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:07:26,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1901058708, now seen corresponding path program 1 times [2023-12-20 01:07:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954489508] [2023-12-20 01:07:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954489508] [2023-12-20 01:07:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954489508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571289966] [2023-12-20 01:07:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,571 INFO L87 Difference]: Start difference. First operand 175 states and 253 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,588 INFO L93 Difference]: Finished difference Result 457 states and 673 transitions. [2023-12-20 01:07:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 01:07:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,590 INFO L225 Difference]: With dead ends: 457 [2023-12-20 01:07:26,590 INFO L226 Difference]: Without dead ends: 304 [2023-12-20 01:07:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,592 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-20 01:07:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2023-12-20 01:07:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.4451827242524917) internal successors, (435), 301 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 435 transitions. [2023-12-20 01:07:26,600 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 435 transitions. Word has length 35 [2023-12-20 01:07:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 435 transitions. [2023-12-20 01:07:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 435 transitions. [2023-12-20 01:07:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:07:26,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:26,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:07:26,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1505175148, now seen corresponding path program 1 times [2023-12-20 01:07:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043160636] [2023-12-20 01:07:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:26,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043160636] [2023-12-20 01:07:26,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043160636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217005515] [2023-12-20 01:07:26,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,654 INFO L87 Difference]: Start difference. First operand 302 states and 435 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,677 INFO L93 Difference]: Finished difference Result 814 states and 1177 transitions. [2023-12-20 01:07:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 01:07:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,680 INFO L225 Difference]: With dead ends: 814 [2023-12-20 01:07:26,681 INFO L226 Difference]: Without dead ends: 534 [2023-12-20 01:07:26,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:26,685 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-20 01:07:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2023-12-20 01:07:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.4143126177024483) internal successors, (751), 531 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 751 transitions. [2023-12-20 01:07:26,699 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 751 transitions. Word has length 35 [2023-12-20 01:07:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,699 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 751 transitions. [2023-12-20 01:07:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 751 transitions. [2023-12-20 01:07:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:07:26,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,700 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:07:26,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash -217205247, now seen corresponding path program 1 times [2023-12-20 01:07:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206444890] [2023-12-20 01:07:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:07:26,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:26,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206444890] [2023-12-20 01:07:26,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206444890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:26,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:26,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:07:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789691356] [2023-12-20 01:07:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:26,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:07:26,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:07:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:07:26,819 INFO L87 Difference]: Start difference. First operand 532 states and 751 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:26,898 INFO L93 Difference]: Finished difference Result 2040 states and 2903 transitions. [2023-12-20 01:07:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:07:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:07:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:26,903 INFO L225 Difference]: With dead ends: 2040 [2023-12-20 01:07:26,903 INFO L226 Difference]: Without dead ends: 1670 [2023-12-20 01:07:26,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:07:26,904 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 155 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:26,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 276 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-12-20 01:07:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 972. [2023-12-20 01:07:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.411946446961895) internal successors, (1371), 971 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1371 transitions. [2023-12-20 01:07:26,936 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1371 transitions. Word has length 49 [2023-12-20 01:07:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1371 transitions. [2023-12-20 01:07:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1371 transitions. [2023-12-20 01:07:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:07:26,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:26,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:07:26,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -842861311, now seen corresponding path program 1 times [2023-12-20 01:07:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769611469] [2023-12-20 01:07:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 01:07:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769611469] [2023-12-20 01:07:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769611469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:07:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271938387] [2023-12-20 01:07:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:07:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:07:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:07:27,009 INFO L87 Difference]: Start difference. First operand 972 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:27,097 INFO L93 Difference]: Finished difference Result 2548 states and 3623 transitions. [2023-12-20 01:07:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:07:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:07:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:27,102 INFO L225 Difference]: With dead ends: 2548 [2023-12-20 01:07:27,102 INFO L226 Difference]: Without dead ends: 2038 [2023-12-20 01:07:27,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:07:27,104 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 157 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:27,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 263 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-12-20 01:07:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1664. [2023-12-20 01:07:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1663 states have (on average 1.4088995790739627) internal successors, (2343), 1663 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2343 transitions. [2023-12-20 01:07:27,173 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2343 transitions. Word has length 49 [2023-12-20 01:07:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:27,174 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2343 transitions. [2023-12-20 01:07:27,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2343 transitions. [2023-12-20 01:07:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:07:27,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:27,175 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:27,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:07:27,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:27,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 45872129, now seen corresponding path program 1 times [2023-12-20 01:07:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254931862] [2023-12-20 01:07:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:07:27,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:27,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254931862] [2023-12-20 01:07:27,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254931862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:27,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:27,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:07:27,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763777892] [2023-12-20 01:07:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:27,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:07:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:07:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:07:27,251 INFO L87 Difference]: Start difference. First operand 1664 states and 2343 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:27,335 INFO L93 Difference]: Finished difference Result 3056 states and 4339 transitions. [2023-12-20 01:07:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:07:27,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:07:27,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:27,341 INFO L225 Difference]: With dead ends: 3056 [2023-12-20 01:07:27,341 INFO L226 Difference]: Without dead ends: 2546 [2023-12-20 01:07:27,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:07:27,342 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 165 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:27,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 257 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-20 01:07:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2172. [2023-12-20 01:07:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.4090280976508522) internal successors, (3059), 2171 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3059 transitions. [2023-12-20 01:07:27,401 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3059 transitions. Word has length 49 [2023-12-20 01:07:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:27,401 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3059 transitions. [2023-12-20 01:07:27,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3059 transitions. [2023-12-20 01:07:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 01:07:27,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:27,402 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:07:27,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:27,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1885157086, now seen corresponding path program 1 times [2023-12-20 01:07:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339159956] [2023-12-20 01:07:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339159956] [2023-12-20 01:07:27,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339159956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:27,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991199587] [2023-12-20 01:07:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:27,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:27,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,456 INFO L87 Difference]: Start difference. First operand 2172 states and 3059 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:27,503 INFO L93 Difference]: Finished difference Result 4324 states and 6097 transitions. [2023-12-20 01:07:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 01:07:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:27,509 INFO L225 Difference]: With dead ends: 4324 [2023-12-20 01:07:27,509 INFO L226 Difference]: Without dead ends: 2174 [2023-12-20 01:07:27,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,513 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 29 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:27,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 134 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2023-12-20 01:07:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2172. [2023-12-20 01:07:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.3859972362966375) internal successors, (3009), 2171 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3009 transitions. [2023-12-20 01:07:27,578 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3009 transitions. Word has length 50 [2023-12-20 01:07:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:27,578 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3009 transitions. [2023-12-20 01:07:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3009 transitions. [2023-12-20 01:07:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:07:27,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:27,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:27,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:07:27,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:27,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1001536681, now seen corresponding path program 1 times [2023-12-20 01:07:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820136495] [2023-12-20 01:07:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820136495] [2023-12-20 01:07:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820136495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947710744] [2023-12-20 01:07:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,625 INFO L87 Difference]: Start difference. First operand 2172 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:27,651 INFO L93 Difference]: Finished difference Result 3018 states and 4196 transitions. [2023-12-20 01:07:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:27,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 01:07:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:27,654 INFO L225 Difference]: With dead ends: 3018 [2023-12-20 01:07:27,654 INFO L226 Difference]: Without dead ends: 868 [2023-12-20 01:07:27,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,656 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:27,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 131 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-20 01:07:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 861. [2023-12-20 01:07:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.3767441860465117) internal successors, (1184), 860 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1184 transitions. [2023-12-20 01:07:27,676 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1184 transitions. Word has length 51 [2023-12-20 01:07:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:27,676 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1184 transitions. [2023-12-20 01:07:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1184 transitions. [2023-12-20 01:07:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:07:27,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:27,677 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:07:27,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:27,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1455204816, now seen corresponding path program 1 times [2023-12-20 01:07:27,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138329891] [2023-12-20 01:07:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138329891] [2023-12-20 01:07:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138329891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:27,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417654014] [2023-12-20 01:07:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,729 INFO L87 Difference]: Start difference. First operand 861 states and 1184 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:27,746 INFO L93 Difference]: Finished difference Result 1279 states and 1762 transitions. [2023-12-20 01:07:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:07:27,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:07:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:27,747 INFO L225 Difference]: With dead ends: 1279 [2023-12-20 01:07:27,747 INFO L226 Difference]: Without dead ends: 449 [2023-12-20 01:07:27,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:27,749 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:07:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-20 01:07:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-20 01:07:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.34304932735426) internal successors, (599), 446 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 599 transitions. [2023-12-20 01:07:27,760 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 599 transitions. Word has length 52 [2023-12-20 01:07:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:27,760 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 599 transitions. [2023-12-20 01:07:27,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 599 transitions. [2023-12-20 01:07:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 01:07:27,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:27,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:27,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:07:27,761 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:27,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash 923352062, now seen corresponding path program 1 times [2023-12-20 01:07:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459778205] [2023-12-20 01:07:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:29,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:29,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459778205] [2023-12-20 01:07:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459778205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114317754] [2023-12-20 01:07:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:29,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:29,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:29,248 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) [2023-12-20 01:07:29,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:07:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:29,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:07:29,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:07:29,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:07:29,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114317754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:29,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:29,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-20 01:07:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153792109] [2023-12-20 01:07:29,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:07:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:07:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:07:29,543 INFO L87 Difference]: Start difference. First operand 447 states and 599 transitions. Second operand has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:32,051 INFO L93 Difference]: Finished difference Result 2772 states and 3645 transitions. [2023-12-20 01:07:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 01:07:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-20 01:07:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:32,057 INFO L225 Difference]: With dead ends: 2772 [2023-12-20 01:07:32,057 INFO L226 Difference]: Without dead ends: 2356 [2023-12-20 01:07:32,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=505, Invalid=2251, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 01:07:32,058 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 970 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 396 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:07:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2023-12-20 01:07:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2094. [2023-12-20 01:07:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 1.2790253225035835) internal successors, (2677), 2093 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2677 transitions. [2023-12-20 01:07:32,129 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2677 transitions. Word has length 54 [2023-12-20 01:07:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:32,129 INFO L495 AbstractCegarLoop]: Abstraction has 2094 states and 2677 transitions. [2023-12-20 01:07:32,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2677 transitions. [2023-12-20 01:07:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 01:07:32,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:32,130 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:32,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 01:07:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 01:07:32,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:32,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 122236493, now seen corresponding path program 1 times [2023-12-20 01:07:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441645938] [2023-12-20 01:07:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441645938] [2023-12-20 01:07:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441645938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639936927] [2023-12-20 01:07:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:32,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:32,642 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) [2023-12-20 01:07:32,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:07:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:32,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 01:07:32,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:33,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:35,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639936927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:35,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:35,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 17] total 35 [2023-12-20 01:07:35,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028716733] [2023-12-20 01:07:35,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:35,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 01:07:35,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 01:07:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 01:07:35,245 INFO L87 Difference]: Start difference. First operand 2094 states and 2677 transitions. Second operand has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:38,452 INFO L93 Difference]: Finished difference Result 10968 states and 13857 transitions. [2023-12-20 01:07:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 01:07:38,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 01:07:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:38,471 INFO L225 Difference]: With dead ends: 10968 [2023-12-20 01:07:38,471 INFO L226 Difference]: Without dead ends: 9043 [2023-12-20 01:07:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1215, Invalid=5427, Unknown=0, NotChecked=0, Total=6642 [2023-12-20 01:07:38,475 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1604 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:38,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 986 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:07:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2023-12-20 01:07:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 6909. [2023-12-20 01:07:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6908 states have (on average 1.2628836132020846) internal successors, (8724), 6908 states have internal predecessors, (8724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8724 transitions. [2023-12-20 01:07:38,726 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8724 transitions. Word has length 55 [2023-12-20 01:07:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:38,726 INFO L495 AbstractCegarLoop]: Abstraction has 6909 states and 8724 transitions. [2023-12-20 01:07:38,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8724 transitions. [2023-12-20 01:07:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 01:07:38,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:38,727 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:38,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:07:38,955 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,SelfDestructingSolverStorable16 [2023-12-20 01:07:38,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:38,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1288816485, now seen corresponding path program 1 times [2023-12-20 01:07:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218817988] [2023-12-20 01:07:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:39,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218817988] [2023-12-20 01:07:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218817988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415240659] [2023-12-20 01:07:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:39,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:39,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:39,156 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) [2023-12-20 01:07:39,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:07:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:39,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:07:39,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:39,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415240659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:40,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:40,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-20 01:07:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236696018] [2023-12-20 01:07:40,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 01:07:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 01:07:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-20 01:07:40,116 INFO L87 Difference]: Start difference. First operand 6909 states and 8724 transitions. Second operand has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:40,729 INFO L93 Difference]: Finished difference Result 13294 states and 16736 transitions. [2023-12-20 01:07:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 01:07:40,730 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 01:07:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:40,746 INFO L225 Difference]: With dead ends: 13294 [2023-12-20 01:07:40,746 INFO L226 Difference]: Without dead ends: 7763 [2023-12-20 01:07:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 01:07:40,751 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 443 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:40,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 559 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:07:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7763 states. [2023-12-20 01:07:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7763 to 6829. [2023-12-20 01:07:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6829 states, 6828 states have (on average 1.2438488576449913) internal successors, (8493), 6828 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6829 states to 6829 states and 8493 transitions. [2023-12-20 01:07:41,004 INFO L78 Accepts]: Start accepts. Automaton has 6829 states and 8493 transitions. Word has length 55 [2023-12-20 01:07:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:41,004 INFO L495 AbstractCegarLoop]: Abstraction has 6829 states and 8493 transitions. [2023-12-20 01:07:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 6829 states and 8493 transitions. [2023-12-20 01:07:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 01:07:41,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:41,005 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:41,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 01:07:41,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 01:07:41,210 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:41,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash -769882752, now seen corresponding path program 1 times [2023-12-20 01:07:41,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:41,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977917610] [2023-12-20 01:07:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:41,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:41,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977917610] [2023-12-20 01:07:41,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977917610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435260544] [2023-12-20 01:07:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:41,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:41,588 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) [2023-12-20 01:07:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:07:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:41,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:07:41,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:42,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435260544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:43,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 34 [2023-12-20 01:07:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340292972] [2023-12-20 01:07:43,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:07:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:43,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:07:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:07:43,210 INFO L87 Difference]: Start difference. First operand 6829 states and 8493 transitions. Second operand has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:44,341 INFO L93 Difference]: Finished difference Result 8934 states and 11097 transitions. [2023-12-20 01:07:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 01:07:44,341 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 01:07:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:44,352 INFO L225 Difference]: With dead ends: 8934 [2023-12-20 01:07:44,352 INFO L226 Difference]: Without dead ends: 5965 [2023-12-20 01:07:44,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=743, Invalid=2449, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 01:07:44,359 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1070 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:44,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 547 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:07:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2023-12-20 01:07:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 5687. [2023-12-20 01:07:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5686 states have (on average 1.2358424199788955) internal successors, (7027), 5686 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 7027 transitions. [2023-12-20 01:07:44,561 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 7027 transitions. Word has length 56 [2023-12-20 01:07:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:44,561 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 7027 transitions. [2023-12-20 01:07:44,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 7027 transitions. [2023-12-20 01:07:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 01:07:44,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:44,562 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:44,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:07:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:44,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:44,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -297652260, now seen corresponding path program 1 times [2023-12-20 01:07:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:44,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821023869] [2023-12-20 01:07:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:45,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821023869] [2023-12-20 01:07:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821023869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:45,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601772527] [2023-12-20 01:07:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:45,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:45,693 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) [2023-12-20 01:07:45,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 01:07:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:45,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:07:45,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:46,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601772527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:47,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 46 [2023-12-20 01:07:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50309740] [2023-12-20 01:07:47,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:47,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 01:07:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 01:07:47,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 01:07:47,662 INFO L87 Difference]: Start difference. First operand 5687 states and 7027 transitions. Second operand has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:56,572 INFO L93 Difference]: Finished difference Result 9437 states and 11622 transitions. [2023-12-20 01:07:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-20 01:07:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 01:07:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:56,581 INFO L225 Difference]: With dead ends: 9437 [2023-12-20 01:07:56,581 INFO L226 Difference]: Without dead ends: 7499 [2023-12-20 01:07:56,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4326 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2680, Invalid=14090, Unknown=0, NotChecked=0, Total=16770 [2023-12-20 01:07:56,587 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2599 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:56,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 2324 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 01:07:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7499 states. [2023-12-20 01:07:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7499 to 5685. [2023-12-20 01:07:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5684 states have (on average 1.2390921885995778) internal successors, (7043), 5684 states have internal predecessors, (7043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7043 transitions. [2023-12-20 01:07:56,842 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7043 transitions. Word has length 56 [2023-12-20 01:07:56,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:56,842 INFO L495 AbstractCegarLoop]: Abstraction has 5685 states and 7043 transitions. [2023-12-20 01:07:56,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7043 transitions. [2023-12-20 01:07:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 01:07:56,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:56,843 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:56,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 01:07:57,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:57,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:57,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash -276203885, now seen corresponding path program 1 times [2023-12-20 01:07:57,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:57,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865095297] [2023-12-20 01:07:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865095297] [2023-12-20 01:07:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865095297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95219032] [2023-12-20 01:07:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:57,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:57,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:57,976 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) [2023-12-20 01:07:57,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:07:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:58,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 01:07:58,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:59,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95219032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:04,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 46 [2023-12-20 01:08:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544879393] [2023-12-20 01:08:04,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 01:08:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 01:08:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1881, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 01:08:04,202 INFO L87 Difference]: Start difference. First operand 5685 states and 7043 transitions. Second operand has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:50,306 INFO L93 Difference]: Finished difference Result 13677 states and 16959 transitions. [2023-12-20 01:08:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-20 01:08:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 01:08:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:50,341 INFO L225 Difference]: With dead ends: 13677 [2023-12-20 01:08:50,341 INFO L226 Difference]: Without dead ends: 8803 [2023-12-20 01:08:50,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22925 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=10301, Invalid=48991, Unknown=0, NotChecked=0, Total=59292 [2023-12-20 01:08:50,366 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3283 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 3777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:50,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 3026 Invalid, 3777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 01:08:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2023-12-20 01:08:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 6253. [2023-12-20 01:08:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6253 states, 6252 states have (on average 1.2528790786948176) internal successors, (7833), 6252 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 7833 transitions. [2023-12-20 01:08:50,714 INFO L78 Accepts]: Start accepts. Automaton has 6253 states and 7833 transitions. Word has length 57 [2023-12-20 01:08:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 6253 states and 7833 transitions. [2023-12-20 01:08:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6253 states and 7833 transitions. [2023-12-20 01:08:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:08:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:50,716 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:50,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 01:08:50,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:50,921 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1002457202, now seen corresponding path program 1 times [2023-12-20 01:08:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720942692] [2023-12-20 01:08:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:51,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:51,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720942692] [2023-12-20 01:08:51,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720942692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246078275] [2023-12-20 01:08:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:51,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:51,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:51,414 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) [2023-12-20 01:08:51,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 01:08:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:51,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 01:08:51,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:51,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246078275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:52,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2023-12-20 01:08:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061381482] [2023-12-20 01:08:52,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:52,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 01:08:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 01:08:52,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 01:08:52,873 INFO L87 Difference]: Start difference. First operand 6253 states and 7833 transitions. Second operand has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:53,997 INFO L93 Difference]: Finished difference Result 9713 states and 12199 transitions. [2023-12-20 01:08:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 01:08:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 01:08:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:54,004 INFO L225 Difference]: With dead ends: 9713 [2023-12-20 01:08:54,004 INFO L226 Difference]: Without dead ends: 6403 [2023-12-20 01:08:54,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 01:08:54,007 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 975 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:54,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 952 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:08:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2023-12-20 01:08:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6177. [2023-12-20 01:08:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6177 states, 6176 states have (on average 1.2475712435233162) internal successors, (7705), 6176 states have internal predecessors, (7705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 7705 transitions. [2023-12-20 01:08:54,331 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 7705 transitions. Word has length 92 [2023-12-20 01:08:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:54,331 INFO L495 AbstractCegarLoop]: Abstraction has 6177 states and 7705 transitions. [2023-12-20 01:08:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 7705 transitions. [2023-12-20 01:08:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:08:54,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:54,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:54,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:54,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:54,538 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:54,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1175166350, now seen corresponding path program 1 times [2023-12-20 01:08:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255293275] [2023-12-20 01:08:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255293275] [2023-12-20 01:08:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255293275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872517506] [2023-12-20 01:08:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:55,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:55,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:55,121 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) [2023-12-20 01:08:55,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 01:08:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:55,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:08:55,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:55,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872517506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:56,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2023-12-20 01:08:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828319069] [2023-12-20 01:08:56,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:08:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:08:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:08:56,920 INFO L87 Difference]: Start difference. First operand 6177 states and 7705 transitions. Second operand has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:05,435 INFO L93 Difference]: Finished difference Result 13409 states and 16801 transitions. [2023-12-20 01:09:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-20 01:09:05,436 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 01:09:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:05,442 INFO L225 Difference]: With dead ends: 13409 [2023-12-20 01:09:05,443 INFO L226 Difference]: Without dead ends: 8193 [2023-12-20 01:09:05,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5443 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3303, Invalid=15603, Unknown=0, NotChecked=0, Total=18906 [2023-12-20 01:09:05,446 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2329 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:05,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 1091 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:09:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2023-12-20 01:09:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5123. [2023-12-20 01:09:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.2266692698164778) internal successors, (6283), 5122 states have internal predecessors, (6283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6283 transitions. [2023-12-20 01:09:05,791 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6283 transitions. Word has length 92 [2023-12-20 01:09:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:05,791 INFO L495 AbstractCegarLoop]: Abstraction has 5123 states and 6283 transitions. [2023-12-20 01:09:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6283 transitions. [2023-12-20 01:09:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 01:09:05,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:05,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:09:05,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 01:09:06,000 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,SelfDestructingSolverStorable22 [2023-12-20 01:09:06,000 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:06,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1098499603, now seen corresponding path program 1 times [2023-12-20 01:09:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:06,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373408745] [2023-12-20 01:09:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:06,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 52 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:09:06,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373408745] [2023-12-20 01:09:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373408745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:06,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290929738] [2023-12-20 01:09:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:06,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:06,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:06,198 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) [2023-12-20 01:09:06,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 01:09:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:06,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:09:06,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:07,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290929738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:08,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 38 [2023-12-20 01:09:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146181712] [2023-12-20 01:09:08,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:08,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:09:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:09:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1261, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:09:08,436 INFO L87 Difference]: Start difference. First operand 5123 states and 6283 transitions. Second operand has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:12,087 INFO L93 Difference]: Finished difference Result 10041 states and 12329 transitions. [2023-12-20 01:09:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-20 01:09:12,087 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 01:09:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:12,093 INFO L225 Difference]: With dead ends: 10041 [2023-12-20 01:09:12,093 INFO L226 Difference]: Without dead ends: 8317 [2023-12-20 01:09:12,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2772 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1766, Invalid=7164, Unknown=0, NotChecked=0, Total=8930 [2023-12-20 01:09:12,095 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1197 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:12,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1585 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:09:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8317 states. [2023-12-20 01:09:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8317 to 5123. [2023-12-20 01:09:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.2200312377977354) internal successors, (6249), 5122 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6249 transitions. [2023-12-20 01:09:12,512 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6249 transitions. Word has length 93 [2023-12-20 01:09:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:12,512 INFO L495 AbstractCegarLoop]: Abstraction has 5123 states and 6249 transitions. [2023-12-20 01:09:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6249 transitions. [2023-12-20 01:09:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 01:09:12,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:12,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:12,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 01:09:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 01:09:12,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1275648929, now seen corresponding path program 1 times [2023-12-20 01:09:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824159178] [2023-12-20 01:09:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824159178] [2023-12-20 01:09:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824159178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524037418] [2023-12-20 01:09:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:13,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:13,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:13,802 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) [2023-12-20 01:09:13,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 01:09:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:13,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 01:09:13,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:15,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524037418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:17,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 59 [2023-12-20 01:09:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842957910] [2023-12-20 01:09:17,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 01:09:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 01:09:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3185, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 01:09:17,582 INFO L87 Difference]: Start difference. First operand 5123 states and 6249 transitions. Second operand has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:05,132 INFO L93 Difference]: Finished difference Result 11690 states and 14147 transitions. [2023-12-20 01:10:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2023-12-20 01:10:05,133 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 01:10:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:05,140 INFO L225 Difference]: With dead ends: 11690 [2023-12-20 01:10:05,140 INFO L226 Difference]: Without dead ends: 9265 [2023-12-20 01:10:05,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35711 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=12549, Invalid=87623, Unknown=0, NotChecked=0, Total=100172 [2023-12-20 01:10:05,150 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 4410 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 5535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:05,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4410 Valid, 5911 Invalid, 5535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 01:10:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2023-12-20 01:10:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 6105. [2023-12-20 01:10:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 1.208224115334207) internal successors, (7375), 6104 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 7375 transitions. [2023-12-20 01:10:05,730 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 7375 transitions. Word has length 93 [2023-12-20 01:10:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:05,730 INFO L495 AbstractCegarLoop]: Abstraction has 6105 states and 7375 transitions. [2023-12-20 01:10:05,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 7375 transitions. [2023-12-20 01:10:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:10:05,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:05,731 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:05,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 01:10:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 01:10:05,936 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:05,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash -292304222, now seen corresponding path program 1 times [2023-12-20 01:10:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:05,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326366880] [2023-12-20 01:10:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326366880] [2023-12-20 01:10:06,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326366880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904526060] [2023-12-20 01:10:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:06,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:06,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:06,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 01:10:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:06,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 01:10:06,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:07,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904526060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:10,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 53 [2023-12-20 01:10:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575632062] [2023-12-20 01:10:10,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:10,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 01:10:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 01:10:10,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2540, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 01:10:10,279 INFO L87 Difference]: Start difference. First operand 6105 states and 7375 transitions. Second operand has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:48,923 INFO L93 Difference]: Finished difference Result 13384 states and 16013 transitions. [2023-12-20 01:10:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2023-12-20 01:10:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 01:10:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:48,932 INFO L225 Difference]: With dead ends: 13384 [2023-12-20 01:10:48,932 INFO L226 Difference]: Without dead ends: 10515 [2023-12-20 01:10:48,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25476 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=9092, Invalid=63000, Unknown=0, NotChecked=0, Total=72092 [2023-12-20 01:10:48,937 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 5856 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5856 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 4977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:48,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5856 Valid, 4708 Invalid, 4977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 4629 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-20 01:10:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2023-12-20 01:10:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5631. [2023-12-20 01:10:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5631 states, 5630 states have (on average 1.1896980461811724) internal successors, (6698), 5630 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 6698 transitions. [2023-12-20 01:10:49,595 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 6698 transitions. Word has length 94 [2023-12-20 01:10:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:49,595 INFO L495 AbstractCegarLoop]: Abstraction has 5631 states and 6698 transitions. [2023-12-20 01:10:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 6698 transitions. [2023-12-20 01:10:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:10:49,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:49,596 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:10:49,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 01:10:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 01:10:49,802 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:49,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1051627468, now seen corresponding path program 1 times [2023-12-20 01:10:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310983464] [2023-12-20 01:10:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310983464] [2023-12-20 01:10:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310983464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789305677] [2023-12-20 01:10:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:50,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:50,442 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:50,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 01:10:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:50,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 01:10:50,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:51,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789305677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:53,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:53,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 51 [2023-12-20 01:10:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030018194] [2023-12-20 01:10:53,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:53,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-20 01:10:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-20 01:10:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2256, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 01:10:53,709 INFO L87 Difference]: Start difference. First operand 5631 states and 6698 transitions. Second operand has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:11:04,184 INFO L93 Difference]: Finished difference Result 13605 states and 16307 transitions. [2023-12-20 01:11:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-20 01:11:04,184 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 01:11:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:11:04,191 INFO L225 Difference]: With dead ends: 13605 [2023-12-20 01:11:04,191 INFO L226 Difference]: Without dead ends: 10197 [2023-12-20 01:11:04,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5175 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3528, Invalid=14562, Unknown=0, NotChecked=0, Total=18090 [2023-12-20 01:11:04,194 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1912 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:11:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 1964 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:11:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2023-12-20 01:11:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 9272. [2023-12-20 01:11:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 9271 states have (on average 1.1974975730773378) internal successors, (11102), 9271 states have internal predecessors, (11102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 11102 transitions. [2023-12-20 01:11:05,398 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 11102 transitions. Word has length 94 [2023-12-20 01:11:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:11:05,398 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 11102 transitions. [2023-12-20 01:11:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 11102 transitions. [2023-12-20 01:11:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:11:05,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:11:05,399 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:11:05,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 01:11:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 01:11:05,604 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:11:05,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:11:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1297592053, now seen corresponding path program 1 times [2023-12-20 01:11:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:11:05,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889274046] [2023-12-20 01:11:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:11:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:11:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889274046] [2023-12-20 01:11:06,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889274046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:11:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974615350] [2023-12-20 01:11:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:06,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:11:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:11:06,655 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:11:06,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 01:11:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:06,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-20 01:11:06,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:11:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:08,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:11:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:12,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974615350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:11:12,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:11:12,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 21] total 65 [2023-12-20 01:11:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082368231] [2023-12-20 01:11:12,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:11:12,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-20 01:11:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:11:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-20 01:11:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=3765, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 01:11:12,143 INFO L87 Difference]: Start difference. First operand 9272 states and 11102 transitions. Second operand has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:11:50,556 INFO L93 Difference]: Finished difference Result 13500 states and 16053 transitions. [2023-12-20 01:11:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-12-20 01:11:50,557 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:11:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:11:50,565 INFO L225 Difference]: With dead ends: 13500 [2023-12-20 01:11:50,565 INFO L226 Difference]: Without dead ends: 11601 [2023-12-20 01:11:50,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26579 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=9794, Invalid=67212, Unknown=0, NotChecked=0, Total=77006 [2023-12-20 01:11:50,569 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 3300 mSDsluCounter, 4656 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 4823 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:11:50,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 4823 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 01:11:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2023-12-20 01:11:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 9941. [2023-12-20 01:11:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 1.1983903420523139) internal successors, (11912), 9940 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 11912 transitions. [2023-12-20 01:11:51,939 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 11912 transitions. Word has length 95 [2023-12-20 01:11:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:11:51,939 INFO L495 AbstractCegarLoop]: Abstraction has 9941 states and 11912 transitions. [2023-12-20 01:11:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 11912 transitions. [2023-12-20 01:11:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:11:51,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:11:51,941 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:11:51,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 01:11:52,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 01:11:52,148 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:11:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:11:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 727849209, now seen corresponding path program 1 times [2023-12-20 01:11:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:11:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34925301] [2023-12-20 01:11:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:11:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:11:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34925301] [2023-12-20 01:11:53,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34925301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:11:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749754439] [2023-12-20 01:11:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:53,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:11:53,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:11:53,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:11:53,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 01:11:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:53,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 01:11:53,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:11:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:55,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:11:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:58,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749754439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:11:58,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:11:58,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 20] total 61 [2023-12-20 01:11:58,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579256261] [2023-12-20 01:11:58,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:11:58,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 01:11:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:11:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 01:11:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=3286, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 01:11:58,552 INFO L87 Difference]: Start difference. First operand 9941 states and 11912 transitions. Second operand has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:12:27,914 INFO L93 Difference]: Finished difference Result 16680 states and 19956 transitions. [2023-12-20 01:12:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-12-20 01:12:27,915 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:12:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:12:27,922 INFO L225 Difference]: With dead ends: 16680 [2023-12-20 01:12:27,923 INFO L226 Difference]: Without dead ends: 11729 [2023-12-20 01:12:27,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18468 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=8560, Invalid=47372, Unknown=0, NotChecked=0, Total=55932 [2023-12-20 01:12:27,927 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2256 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:12:27,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 3339 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 01:12:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11729 states. [2023-12-20 01:12:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11729 to 10800. [2023-12-20 01:12:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10800 states, 10799 states have (on average 1.1967774793962405) internal successors, (12924), 10799 states have internal predecessors, (12924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10800 states to 10800 states and 12924 transitions. [2023-12-20 01:12:29,556 INFO L78 Accepts]: Start accepts. Automaton has 10800 states and 12924 transitions. Word has length 95 [2023-12-20 01:12:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:12:29,556 INFO L495 AbstractCegarLoop]: Abstraction has 10800 states and 12924 transitions. [2023-12-20 01:12:29,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10800 states and 12924 transitions. [2023-12-20 01:12:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:12:29,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:12:29,558 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:12:29,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 01:12:29,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:29,762 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:12:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:12:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 945006046, now seen corresponding path program 1 times [2023-12-20 01:12:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:12:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29590820] [2023-12-20 01:12:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:29,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:12:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:30,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:12:30,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29590820] [2023-12-20 01:12:30,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29590820] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:12:30,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536047714] [2023-12-20 01:12:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:30,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:30,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:12:30,075 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:12:30,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 01:12:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:30,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:12:30,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:12:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:30,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:12:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:32,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536047714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:12:32,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:12:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2023-12-20 01:12:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780066768] [2023-12-20 01:12:32,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:12:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 01:12:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:12:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 01:12:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 01:12:32,198 INFO L87 Difference]: Start difference. First operand 10800 states and 12924 transitions. Second operand has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:12:38,180 INFO L93 Difference]: Finished difference Result 27853 states and 33553 transitions. [2023-12-20 01:12:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-20 01:12:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 01:12:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:12:38,192 INFO L225 Difference]: With dead ends: 27853 [2023-12-20 01:12:38,192 INFO L226 Difference]: Without dead ends: 18930 [2023-12-20 01:12:38,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2033, Invalid=8679, Unknown=0, NotChecked=0, Total=10712 [2023-12-20 01:12:38,197 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1604 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:12:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1644 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:12:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18930 states. [2023-12-20 01:12:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18930 to 13183. [2023-12-20 01:12:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 1.2009558488848429) internal successors, (15831), 13182 states have internal predecessors, (15831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 15831 transitions. [2023-12-20 01:12:40,434 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 15831 transitions. Word has length 96 [2023-12-20 01:12:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:12:40,434 INFO L495 AbstractCegarLoop]: Abstraction has 13183 states and 15831 transitions. [2023-12-20 01:12:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 15831 transitions. [2023-12-20 01:12:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:12:40,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:12:40,436 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:12:40,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 01:12:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:40,640 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:12:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:12:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash -437280450, now seen corresponding path program 1 times [2023-12-20 01:12:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:12:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136381338] [2023-12-20 01:12:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:12:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:40,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:12:40,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136381338] [2023-12-20 01:12:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136381338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:12:40,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728653275] [2023-12-20 01:12:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:12:40,962 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:12:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 01:12:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:41,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:12:41,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:12:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:41,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:12:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728653275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:12:43,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:12:43,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 39 [2023-12-20 01:12:43,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158952861] [2023-12-20 01:12:43,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:12:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:12:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:12:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:12:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:12:43,227 INFO L87 Difference]: Start difference. First operand 13183 states and 15831 transitions. Second operand has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:12:51,869 INFO L93 Difference]: Finished difference Result 28829 states and 34727 transitions. [2023-12-20 01:12:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-20 01:12:51,869 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 01:12:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:12:51,891 INFO L225 Difference]: With dead ends: 28829 [2023-12-20 01:12:51,891 INFO L226 Difference]: Without dead ends: 23823 [2023-12-20 01:12:51,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4267 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2710, Invalid=11570, Unknown=0, NotChecked=0, Total=14280 [2023-12-20 01:12:51,897 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1448 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:12:51,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 2240 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:12:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23823 states. [2023-12-20 01:12:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23823 to 16456. [2023-12-20 01:12:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16456 states, 16455 states have (on average 1.2009115770282588) internal successors, (19761), 16455 states have internal predecessors, (19761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16456 states to 16456 states and 19761 transitions. [2023-12-20 01:12:54,737 INFO L78 Accepts]: Start accepts. Automaton has 16456 states and 19761 transitions. Word has length 96 [2023-12-20 01:12:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:12:54,737 INFO L495 AbstractCegarLoop]: Abstraction has 16456 states and 19761 transitions. [2023-12-20 01:12:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 16456 states and 19761 transitions. [2023-12-20 01:12:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:12:54,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:12:54,739 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:12:54,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 01:12:54,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:54,944 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:12:54,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:12:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash -809451358, now seen corresponding path program 1 times [2023-12-20 01:12:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:12:54,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928804222] [2023-12-20 01:12:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:54,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:12:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:12:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928804222] [2023-12-20 01:12:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928804222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:12:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091256471] [2023-12-20 01:12:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:55,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:55,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:12:55,629 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:12:55,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 01:12:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:55,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:12:55,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:12:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:56,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:12:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:57,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091256471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:12:57,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:12:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-12-20 01:12:57,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103394804] [2023-12-20 01:12:57,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:12:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 01:12:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:12:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 01:12:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1800, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 01:12:57,793 INFO L87 Difference]: Start difference. First operand 16456 states and 19761 transitions. Second operand has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:13:12,573 INFO L93 Difference]: Finished difference Result 43126 states and 51786 transitions. [2023-12-20 01:13:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-20 01:13:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 01:13:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:13:12,601 INFO L225 Difference]: With dead ends: 43126 [2023-12-20 01:13:12,601 INFO L226 Difference]: Without dead ends: 30580 [2023-12-20 01:13:12,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20441 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=7867, Invalid=45263, Unknown=0, NotChecked=0, Total=53130 [2023-12-20 01:13:12,612 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2088 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:13:12,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 4084 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 01:13:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30580 states. [2023-12-20 01:13:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30580 to 19574. [2023-12-20 01:13:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19574 states, 19573 states have (on average 1.2031880651918458) internal successors, (23550), 19573 states have internal predecessors, (23550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19574 states to 19574 states and 23550 transitions. [2023-12-20 01:13:16,048 INFO L78 Accepts]: Start accepts. Automaton has 19574 states and 23550 transitions. Word has length 96 [2023-12-20 01:13:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:13:16,049 INFO L495 AbstractCegarLoop]: Abstraction has 19574 states and 23550 transitions. [2023-12-20 01:13:16,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19574 states and 23550 transitions. [2023-12-20 01:13:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:13:16,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:13:16,050 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:13:16,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 01:13:16,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:16,255 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:13:16,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:13:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2002874981, now seen corresponding path program 1 times [2023-12-20 01:13:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:13:16,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39077545] [2023-12-20 01:13:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:13:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:13:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39077545] [2023-12-20 01:13:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39077545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:13:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408910529] [2023-12-20 01:13:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:17,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:17,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:13:17,410 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:13:17,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 01:13:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:17,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-20 01:13:17,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:13:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:20,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:13:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408910529] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:13:26,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:13:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 29] total 79 [2023-12-20 01:13:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935501797] [2023-12-20 01:13:26,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:13:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-20 01:13:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:13:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-20 01:13:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=5837, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 01:13:26,150 INFO L87 Difference]: Start difference. First operand 19574 states and 23550 transitions. Second operand has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:18:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:18:46,833 INFO L93 Difference]: Finished difference Result 46784 states and 56224 transitions. [2023-12-20 01:18:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 588 states. [2023-12-20 01:18:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 01:18:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:18:46,866 INFO L225 Difference]: With dead ends: 46784 [2023-12-20 01:18:46,866 INFO L226 Difference]: Without dead ends: 39747 [2023-12-20 01:18:46,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200559 ImplicationChecksByTransitivity, 309.3s TimeCoverageRelationStatistics Valid=47510, Invalid=395380, Unknown=0, NotChecked=0, Total=442890 [2023-12-20 01:18:46,894 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 6653 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 6948 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6653 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 7424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 6948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:18:46,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6653 Valid, 5474 Invalid, 7424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 6948 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-20 01:18:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39747 states. [2023-12-20 01:18:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39747 to 22745. [2023-12-20 01:18:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22745 states, 22744 states have (on average 1.20444952514949) internal successors, (27394), 22744 states have internal predecessors, (27394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:18:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22745 states to 22745 states and 27394 transitions. [2023-12-20 01:18:51,446 INFO L78 Accepts]: Start accepts. Automaton has 22745 states and 27394 transitions. Word has length 97 [2023-12-20 01:18:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:18:51,446 INFO L495 AbstractCegarLoop]: Abstraction has 22745 states and 27394 transitions. [2023-12-20 01:18:51,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:18:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 22745 states and 27394 transitions. [2023-12-20 01:18:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:18:51,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:18:51,447 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:18:51,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-20 01:18:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:18:51,651 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:18:51,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:18:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 610658217, now seen corresponding path program 1 times [2023-12-20 01:18:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:18:51,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156467534] [2023-12-20 01:18:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:18:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:18:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:18:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:18:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:18:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156467534] [2023-12-20 01:18:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156467534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:18:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985756764] [2023-12-20 01:18:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:18:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:18:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:18:52,426 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:18:52,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 01:18:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:18:52,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 01:18:52,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:18:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:18:54,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:18:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:18:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985756764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:18:58,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:18:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 57 [2023-12-20 01:18:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978437250] [2023-12-20 01:18:58,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:18:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 01:18:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:18:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 01:18:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 01:18:58,001 INFO L87 Difference]: Start difference. First operand 22745 states and 27394 transitions. Second operand has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:19:41,349 INFO L93 Difference]: Finished difference Result 43300 states and 52109 transitions. [2023-12-20 01:19:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-20 01:19:41,350 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 01:19:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:19:41,376 INFO L225 Difference]: With dead ends: 43300 [2023-12-20 01:19:41,376 INFO L226 Difference]: Without dead ends: 30609 [2023-12-20 01:19:41,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28071 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=8823, Invalid=65979, Unknown=0, NotChecked=0, Total=74802 [2023-12-20 01:19:41,385 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 2372 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 4680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:19:41,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 3635 Invalid, 4680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 01:19:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2023-12-20 01:19:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 24876. [2023-12-20 01:19:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24876 states, 24875 states have (on average 1.2042211055276382) internal successors, (29955), 24875 states have internal predecessors, (29955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 29955 transitions. [2023-12-20 01:19:46,372 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 29955 transitions. Word has length 97 [2023-12-20 01:19:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:19:46,372 INFO L495 AbstractCegarLoop]: Abstraction has 24876 states and 29955 transitions. [2023-12-20 01:19:46,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 29955 transitions. [2023-12-20 01:19:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:19:46,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:19:46,375 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:19:46,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-20 01:19:46,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:19:46,580 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:19:46,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:19:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2079799269, now seen corresponding path program 1 times [2023-12-20 01:19:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:19:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970216865] [2023-12-20 01:19:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:19:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:19:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:19:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:19:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970216865] [2023-12-20 01:19:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970216865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:19:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440490413] [2023-12-20 01:19:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:19:47,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:19:47,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:19:47,714 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:19:47,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 01:19:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:19:47,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 01:19:47,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:19:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:49,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:19:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440490413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:19:53,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:19:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 21] total 60 [2023-12-20 01:19:53,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266829382] [2023-12-20 01:19:53,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:19:53,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 01:19:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:19:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 01:19:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3339, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 01:19:53,416 INFO L87 Difference]: Start difference. First operand 24876 states and 29955 transitions. Second operand has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:20:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:46,189 INFO L93 Difference]: Finished difference Result 39692 states and 47729 transitions. [2023-12-20 01:20:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-20 01:20:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 01:20:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:46,214 INFO L225 Difference]: With dead ends: 39692 [2023-12-20 01:20:46,214 INFO L226 Difference]: Without dead ends: 28191 [2023-12-20 01:20:46,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29481 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=10557, Invalid=68685, Unknown=0, NotChecked=0, Total=79242 [2023-12-20 01:20:46,234 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2559 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:46,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 4520 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 01:20:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28191 states. [2023-12-20 01:20:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28191 to 25155. [2023-12-20 01:20:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25155 states, 25154 states have (on average 1.2048580742625428) internal successors, (30307), 25154 states have internal predecessors, (30307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:20:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25155 states to 25155 states and 30307 transitions. [2023-12-20 01:20:51,462 INFO L78 Accepts]: Start accepts. Automaton has 25155 states and 30307 transitions. Word has length 97 [2023-12-20 01:20:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:51,462 INFO L495 AbstractCegarLoop]: Abstraction has 25155 states and 30307 transitions. [2023-12-20 01:20:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:20:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 25155 states and 30307 transitions. [2023-12-20 01:20:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 01:20:51,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:51,464 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:51,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 01:20:51,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 01:20:51,673 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:51,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash -737182576, now seen corresponding path program 1 times [2023-12-20 01:20:51,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:51,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373682554] [2023-12-20 01:20:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 32 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:20:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373682554] [2023-12-20 01:20:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373682554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:20:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88574440] [2023-12-20 01:20:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:52,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:20:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:20:52,335 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:20:52,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 01:20:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:52,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-20 01:20:52,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:20:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 24 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:20:53,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:20:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 22 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:20:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88574440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:20:57,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:20:57,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 23] total 64 [2023-12-20 01:20:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297994994] [2023-12-20 01:20:57,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:20:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 01:20:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 01:20:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3714, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 01:20:57,215 INFO L87 Difference]: Start difference. First operand 25155 states and 30307 transitions. Second operand has 64 states, 64 states have (on average 5.921875) internal successors, (379), 64 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 01:21:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-12-20 01:21:33,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28828 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=11766, Invalid=66354, Unknown=0, NotChecked=0, Total=78120 [2023-12-20 01:21:33,307 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 4198 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4198 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:33,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4198 Valid, 3091 Invalid, 4589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 01:21:33,308 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:21:33,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 01:21:33,323 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:21:33,324 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:21:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 01:21:33,509 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (25155states) and FLOYD_HOARE automaton (currently 218 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 280 known predicates. [2023-12-20 01:21:33,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:21:33,514 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:21:33,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:21:33 BoogieIcfgContainer [2023-12-20 01:21:33,515 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:21:33,516 INFO L158 Benchmark]: Toolchain (without parser) took 849198.84ms. Allocated memory was 199.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 145.9MB in the beginning and 517.6MB in the end (delta: -371.7MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.26ms. Allocated memory is still 199.2MB. Free memory was 145.9MB in the beginning and 132.1MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.70ms. Allocated memory is still 199.2MB. Free memory was 132.1MB in the beginning and 130.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: Boogie Preprocessor took 53.23ms. Allocated memory is still 199.2MB. Free memory was 130.0MB in the beginning and 127.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: RCFGBuilder took 330.87ms. Allocated memory is still 199.2MB. Free memory was 127.5MB in the beginning and 107.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-20 01:21:33,516 INFO L158 Benchmark]: TraceAbstraction took 848576.54ms. Allocated memory was 199.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 106.5MB in the beginning and 517.6MB in the end (delta: -411.1MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-20 01:21:33,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.26ms. Allocated memory is still 199.2MB. Free memory was 145.9MB in the beginning and 132.1MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.70ms. Allocated memory is still 199.2MB. Free memory was 132.1MB in the beginning and 130.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.23ms. Allocated memory is still 199.2MB. Free memory was 130.0MB in the beginning and 127.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 330.87ms. Allocated memory is still 199.2MB. Free memory was 127.5MB in the beginning and 107.1MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 848576.54ms. Allocated memory was 199.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 106.5MB in the beginning and 517.6MB in the end (delta: -411.1MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 284]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 284). Cancelled while NwaCegarLoop was constructing difference of abstraction (25155states) and FLOYD_HOARE automaton (currently 218 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 280 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.5s, OverallIterations: 36, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 723.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54171 SdHoareTripleChecker+Valid, 41.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54171 mSDsluCounter, 59736 SdHoareTripleChecker+Invalid, 37.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56112 mSDsCounter, 3278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57586 IncrementalHoareTripleChecker+Invalid, 60864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3278 mSolverCounterUnsat, 3624 mSDtfsCounter, 57586 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7089 GetRequests, 2975 SyntacticMatches, 18 SemanticMatches, 4095 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465332 ImplicationChecksByTransitivity, 663.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25155occurred in iteration=35, InterpolantAutomatonStates: 3039, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 31.5s AutomataMinimizationTime, 35 MinimizatonAttempts, 77498 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 85.8s InterpolantComputationTime, 4152 NumberOfCodeBlocks, 4152 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 5866 ConstructedInterpolants, 0 QuantifiedInterpolants, 143966 SizeOfPredicates, 202 NumberOfNonLiveVariables, 7069 ConjunctsInSsa, 611 ConjunctsInUnsatCore, 78 InterpolantComputations, 15 PerfectInterpolantSequences, 1443/4542 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown