/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:06:09,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:06:09,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:06:09,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:06:09,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:06:09,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:06:09,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:06:09,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:06:09,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:06:09,928 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:06:09,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:06:09,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:06:09,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:06:09,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:06:09,930 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:06:09,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:06:09,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:06:09,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:06:09,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:06:09,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:06:09,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:06:09,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:06:09,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:06:09,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:06:09,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:06:09,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:06:09,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:06:09,933 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:06:09,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:06:09,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:06:09,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:06:09,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:06:09,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:06:09,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:06:09,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:06:09,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:06:09,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:06:09,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:06:09,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:06:09,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:06:09,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:06:09,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:06:09,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:06:09,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:06:10,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:06:10,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:06:10,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:06:10,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:06:10,158 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:06:10,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:06:11,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:06:11,430 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:06:11,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:06:11,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eaf1278/8e757ccef8374feebda9f73ff81559b5/FLAG12e7a7df1 [2023-12-16 06:06:11,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eaf1278/8e757ccef8374feebda9f73ff81559b5 [2023-12-16 06:06:11,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:06:11,453 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:06:11,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:06:11,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:06:11,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:06:11,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0245b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11, skipping insertion in model container [2023-12-16 06:06:11,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:06:11,621 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.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2023-12-16 06:06:11,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:06:11,632 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:06:11,676 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.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2023-12-16 06:06:11,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:06:11,689 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:06:11,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11 WrapperNode [2023-12-16 06:06:11,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:06:11,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:06:11,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:06:11,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:06:11,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,739 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 452 [2023-12-16 06:06:11,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:06:11,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:06:11,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:06:11,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:06:11,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,776 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]. [2023-12-16 06:06:11,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:06:11,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:06:11,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:06:11,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:06:11,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (1/1) ... [2023-12-16 06:06:11,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:06:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:06:11,860 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) [2023-12-16 06:06:11,892 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 [2023-12-16 06:06:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:06:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:06:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:06:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:06:11,988 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:06:11,990 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:06:12,360 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:06:12,385 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:06:12,385 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:06:12,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:06:12 BoogieIcfgContainer [2023-12-16 06:06:12,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:06:12,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:06:12,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:06:12,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:06:12,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:06:11" (1/3) ... [2023-12-16 06:06:12,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6fd57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:06:12, skipping insertion in model container [2023-12-16 06:06:12,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:06:11" (2/3) ... [2023-12-16 06:06:12,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6fd57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:06:12, skipping insertion in model container [2023-12-16 06:06:12,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:06:12" (3/3) ... [2023-12-16 06:06:12,391 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:06:12,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:06:12,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:06:12,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:06:12,443 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;@3fc37bbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:06:12,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:06:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 109 states have (on average 1.81651376146789) internal successors, (198), 110 states have internal predecessors, (198), 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) [2023-12-16 06:06:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 06:06:12,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:12,452 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] [2023-12-16 06:06:12,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:12,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -697384584, now seen corresponding path program 1 times [2023-12-16 06:06:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:12,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995773899] [2023-12-16 06:06:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995773899] [2023-12-16 06:06:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995773899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:12,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:12,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:06:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282095977] [2023-12-16 06:06:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:12,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:06:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:06:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:06:12,675 INFO L87 Difference]: Start difference. First operand has 111 states, 109 states have (on average 1.81651376146789) internal successors, (198), 110 states have internal predecessors, (198), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-12-16 06:06:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:12,720 INFO L93 Difference]: Finished difference Result 167 states and 291 transitions. [2023-12-16 06:06:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:06:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2023-12-16 06:06:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:12,737 INFO L225 Difference]: With dead ends: 167 [2023-12-16 06:06:12,737 INFO L226 Difference]: Without dead ends: 109 [2023-12-16 06:06:12,739 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 [2023-12-16 06:06:12,741 INFO L413 NwaCegarLoop]: 190 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, 190 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 [2023-12-16 06:06:12,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-16 06:06:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-16 06:06:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.787037037037037) internal successors, (193), 108 states have internal predecessors, (193), 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) [2023-12-16 06:06:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 193 transitions. [2023-12-16 06:06:12,770 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 193 transitions. Word has length 24 [2023-12-16 06:06:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:12,772 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 193 transitions. [2023-12-16 06:06:12,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-12-16 06:06:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 193 transitions. [2023-12-16 06:06:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 06:06:12,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:12,773 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] [2023-12-16 06:06:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:06:12,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:12,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash -274682758, now seen corresponding path program 1 times [2023-12-16 06:06:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:12,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20517678] [2023-12-16 06:06:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20517678] [2023-12-16 06:06:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20517678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:12,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:12,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:06:12,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891152490] [2023-12-16 06:06:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:06:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:06:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:06:12,907 INFO L87 Difference]: Start difference. First operand 109 states and 193 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-12-16 06:06:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:12,998 INFO L93 Difference]: Finished difference Result 167 states and 285 transitions. [2023-12-16 06:06:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:06:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-12-16 06:06:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:13,001 INFO L225 Difference]: With dead ends: 167 [2023-12-16 06:06:13,001 INFO L226 Difference]: Without dead ends: 109 [2023-12-16 06:06:13,001 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 [2023-12-16 06:06:13,002 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:13,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-16 06:06:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-16 06:06:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 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) [2023-12-16 06:06:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 143 transitions. [2023-12-16 06:06:13,009 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 143 transitions. Word has length 24 [2023-12-16 06:06:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:13,009 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 143 transitions. [2023-12-16 06:06:13,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-12-16 06:06:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 143 transitions. [2023-12-16 06:06:13,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 06:06:13,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:13,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:06:13,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:13,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2067769244, now seen corresponding path program 1 times [2023-12-16 06:06:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:13,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794085926] [2023-12-16 06:06:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794085926] [2023-12-16 06:06:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794085926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:13,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:13,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352558398] [2023-12-16 06:06:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:13,327 INFO L87 Difference]: Start difference. First operand 109 states and 143 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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) [2023-12-16 06:06:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:13,642 INFO L93 Difference]: Finished difference Result 879 states and 1389 transitions. [2023-12-16 06:06:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 06:06:13,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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 73 [2023-12-16 06:06:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:13,651 INFO L225 Difference]: With dead ends: 879 [2023-12-16 06:06:13,651 INFO L226 Difference]: Without dead ends: 824 [2023-12-16 06:06:13,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-16 06:06:13,655 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1593 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:13,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 2606 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-12-16 06:06:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 162. [2023-12-16 06:06:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.4223602484472049) internal successors, (229), 161 states have internal predecessors, (229), 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) [2023-12-16 06:06:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 229 transitions. [2023-12-16 06:06:13,690 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 229 transitions. Word has length 73 [2023-12-16 06:06:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:13,691 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 229 transitions. [2023-12-16 06:06:13,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 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) [2023-12-16 06:06:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 229 transitions. [2023-12-16 06:06:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:06:13,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:13,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:13,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:06:13,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:13,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2090732908, now seen corresponding path program 1 times [2023-12-16 06:06:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73622995] [2023-12-16 06:06:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73622995] [2023-12-16 06:06:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73622995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041656343] [2023-12-16 06:06:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:13,812 INFO L87 Difference]: Start difference. First operand 162 states and 229 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2023-12-16 06:06:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:13,831 INFO L93 Difference]: Finished difference Result 367 states and 560 transitions. [2023-12-16 06:06:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2023-12-16 06:06:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:13,834 INFO L225 Difference]: With dead ends: 367 [2023-12-16 06:06:13,834 INFO L226 Difference]: Without dead ends: 259 [2023-12-16 06:06:13,837 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 [2023-12-16 06:06:13,843 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 60 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:13,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 217 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-16 06:06:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2023-12-16 06:06:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.484251968503937) internal successors, (377), 254 states have internal predecessors, (377), 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) [2023-12-16 06:06:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 377 transitions. [2023-12-16 06:06:13,853 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 377 transitions. Word has length 75 [2023-12-16 06:06:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:13,853 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 377 transitions. [2023-12-16 06:06:13,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2023-12-16 06:06:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 377 transitions. [2023-12-16 06:06:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:06:13,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:13,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:06:13,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:13,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2092877860, now seen corresponding path program 1 times [2023-12-16 06:06:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110094120] [2023-12-16 06:06:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110094120] [2023-12-16 06:06:14,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110094120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287913289] [2023-12-16 06:06:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:14,235 INFO L87 Difference]: Start difference. First operand 255 states and 377 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-12-16 06:06:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:14,493 INFO L93 Difference]: Finished difference Result 458 states and 701 transitions. [2023-12-16 06:06:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2023-12-16 06:06:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:14,496 INFO L225 Difference]: With dead ends: 458 [2023-12-16 06:06:14,496 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 06:06:14,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-16 06:06:14,497 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 494 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:14,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 641 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 06:06:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-16 06:06:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.4763779527559056) internal successors, (375), 254 states have internal predecessors, (375), 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) [2023-12-16 06:06:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 375 transitions. [2023-12-16 06:06:14,509 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 375 transitions. Word has length 75 [2023-12-16 06:06:14,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:14,509 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 375 transitions. [2023-12-16 06:06:14,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-12-16 06:06:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 375 transitions. [2023-12-16 06:06:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:06:14,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:14,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:06:14,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:14,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 440631821, now seen corresponding path program 1 times [2023-12-16 06:06:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129721511] [2023-12-16 06:06:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:14,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129721511] [2023-12-16 06:06:14,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129721511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:14,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:14,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:06:14,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040270693] [2023-12-16 06:06:14,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:14,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:06:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:06:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:06:14,694 INFO L87 Difference]: Start difference. First operand 255 states and 375 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-12-16 06:06:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:14,714 INFO L93 Difference]: Finished difference Result 263 states and 384 transitions. [2023-12-16 06:06:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:06:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 76 [2023-12-16 06:06:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:14,716 INFO L225 Difference]: With dead ends: 263 [2023-12-16 06:06:14,716 INFO L226 Difference]: Without dead ends: 261 [2023-12-16 06:06:14,716 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 [2023-12-16 06:06:14,717 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 2 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 680 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 [2023-12-16 06:06:14,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 680 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-16 06:06:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2023-12-16 06:06:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.4651162790697674) internal successors, (378), 258 states have internal predecessors, (378), 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) [2023-12-16 06:06:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 378 transitions. [2023-12-16 06:06:14,728 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 378 transitions. Word has length 76 [2023-12-16 06:06:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:14,729 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 378 transitions. [2023-12-16 06:06:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-12-16 06:06:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 378 transitions. [2023-12-16 06:06:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:14,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:14,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:06:14,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:14,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 226592356, now seen corresponding path program 1 times [2023-12-16 06:06:14,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:14,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060032132] [2023-12-16 06:06:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:14,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060032132] [2023-12-16 06:06:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060032132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125029806] [2023-12-16 06:06:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:14,776 INFO L87 Difference]: Start difference. First operand 259 states and 378 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:14,789 INFO L93 Difference]: Finished difference Result 653 states and 998 transitions. [2023-12-16 06:06:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:14,791 INFO L225 Difference]: With dead ends: 653 [2023-12-16 06:06:14,791 INFO L226 Difference]: Without dead ends: 448 [2023-12-16 06:06:14,792 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 [2023-12-16 06:06:14,793 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 77 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 298 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 [2023-12-16 06:06:14,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 298 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-16 06:06:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-12-16 06:06:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.503370786516854) internal successors, (669), 445 states have internal predecessors, (669), 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) [2023-12-16 06:06:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 669 transitions. [2023-12-16 06:06:14,804 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 669 transitions. Word has length 77 [2023-12-16 06:06:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 669 transitions. [2023-12-16 06:06:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 669 transitions. [2023-12-16 06:06:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:14,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:14,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:14,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:06:14,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:14,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash -452377500, now seen corresponding path program 1 times [2023-12-16 06:06:14,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:14,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498318008] [2023-12-16 06:06:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:14,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498318008] [2023-12-16 06:06:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498318008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:14,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:14,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617838618] [2023-12-16 06:06:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:14,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:14,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:14,847 INFO L87 Difference]: Start difference. First operand 446 states and 669 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:14,869 INFO L93 Difference]: Finished difference Result 1198 states and 1843 transitions. [2023-12-16 06:06:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:14,872 INFO L225 Difference]: With dead ends: 1198 [2023-12-16 06:06:14,872 INFO L226 Difference]: Without dead ends: 806 [2023-12-16 06:06:14,885 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 [2023-12-16 06:06:14,886 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 73 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 294 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 [2023-12-16 06:06:14,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 294 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-12-16 06:06:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 804. [2023-12-16 06:06:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 1.518057285180573) internal successors, (1219), 803 states have internal predecessors, (1219), 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) [2023-12-16 06:06:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1219 transitions. [2023-12-16 06:06:14,907 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1219 transitions. Word has length 77 [2023-12-16 06:06:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1219 transitions. [2023-12-16 06:06:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1219 transitions. [2023-12-16 06:06:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:14,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:14,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:06:14,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -412433564, now seen corresponding path program 1 times [2023-12-16 06:06:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434013596] [2023-12-16 06:06:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434013596] [2023-12-16 06:06:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434013596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531942921] [2023-12-16 06:06:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:14,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:14,953 INFO L87 Difference]: Start difference. First operand 804 states and 1219 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:14,980 INFO L93 Difference]: Finished difference Result 2240 states and 3437 transitions. [2023-12-16 06:06:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:14,984 INFO L225 Difference]: With dead ends: 2240 [2023-12-16 06:06:14,984 INFO L226 Difference]: Without dead ends: 1490 [2023-12-16 06:06:14,985 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 [2023-12-16 06:06:14,987 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 71 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 296 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 [2023-12-16 06:06:14,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 296 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2023-12-16 06:06:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1488. [2023-12-16 06:06:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.5164761264290518) internal successors, (2255), 1487 states have internal predecessors, (2255), 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) [2023-12-16 06:06:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2255 transitions. [2023-12-16 06:06:15,016 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2255 transitions. Word has length 77 [2023-12-16 06:06:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:15,016 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2255 transitions. [2023-12-16 06:06:15,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2255 transitions. [2023-12-16 06:06:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:15,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:15,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:15,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:06:15,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:15,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash -149356188, now seen corresponding path program 1 times [2023-12-16 06:06:15,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250261387] [2023-12-16 06:06:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250261387] [2023-12-16 06:06:15,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250261387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:15,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271624305] [2023-12-16 06:06:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:15,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:15,058 INFO L87 Difference]: Start difference. First operand 1488 states and 2255 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:15,101 INFO L93 Difference]: Finished difference Result 4228 states and 6433 transitions. [2023-12-16 06:06:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:15,109 INFO L225 Difference]: With dead ends: 4228 [2023-12-16 06:06:15,109 INFO L226 Difference]: Without dead ends: 2794 [2023-12-16 06:06:15,110 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 [2023-12-16 06:06:15,110 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 292 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 [2023-12-16 06:06:15,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 292 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-12-16 06:06:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2792. [2023-12-16 06:06:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2791 states have (on average 1.5044786814761735) internal successors, (4199), 2791 states have internal predecessors, (4199), 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) [2023-12-16 06:06:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4199 transitions. [2023-12-16 06:06:15,163 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4199 transitions. Word has length 77 [2023-12-16 06:06:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:15,163 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4199 transitions. [2023-12-16 06:06:15,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4199 transitions. [2023-12-16 06:06:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:15,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:15,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:15,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:06:15,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:15,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1038089628, now seen corresponding path program 1 times [2023-12-16 06:06:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350603357] [2023-12-16 06:06:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350603357] [2023-12-16 06:06:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350603357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:15,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:15,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:15,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37204971] [2023-12-16 06:06:15,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:15,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:15,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:15,217 INFO L87 Difference]: Start difference. First operand 2792 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:15,287 INFO L93 Difference]: Finished difference Result 8012 states and 12041 transitions. [2023-12-16 06:06:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:15,301 INFO L225 Difference]: With dead ends: 8012 [2023-12-16 06:06:15,301 INFO L226 Difference]: Without dead ends: 5274 [2023-12-16 06:06:15,306 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 [2023-12-16 06:06:15,306 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 298 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 [2023-12-16 06:06:15,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 298 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-12-16 06:06:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5272. [2023-12-16 06:06:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 1.4856763422500474) internal successors, (7831), 5271 states have internal predecessors, (7831), 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) [2023-12-16 06:06:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 7831 transitions. [2023-12-16 06:06:15,430 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 7831 transitions. Word has length 77 [2023-12-16 06:06:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:15,430 INFO L495 AbstractCegarLoop]: Abstraction has 5272 states and 7831 transitions. [2023-12-16 06:06:15,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 7831 transitions. [2023-12-16 06:06:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:06:15,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:15,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:15,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:06:15,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:15,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash -183794332, now seen corresponding path program 1 times [2023-12-16 06:06:15,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:15,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053576366] [2023-12-16 06:06:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:15,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:15,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053576366] [2023-12-16 06:06:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053576366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:15,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:15,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:15,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568169527] [2023-12-16 06:06:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:15,493 INFO L87 Difference]: Start difference. First operand 5272 states and 7831 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:15,635 INFO L93 Difference]: Finished difference Result 15196 states and 22489 transitions. [2023-12-16 06:06:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:15,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-16 06:06:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:15,659 INFO L225 Difference]: With dead ends: 15196 [2023-12-16 06:06:15,659 INFO L226 Difference]: Without dead ends: 9978 [2023-12-16 06:06:15,665 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 [2023-12-16 06:06:15,666 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 75 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 300 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 [2023-12-16 06:06:15,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 300 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9978 states. [2023-12-16 06:06:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9978 to 9976. [2023-12-16 06:06:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9976 states, 9975 states have (on average 1.461954887218045) internal successors, (14583), 9975 states have internal predecessors, (14583), 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) [2023-12-16 06:06:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9976 states to 9976 states and 14583 transitions. [2023-12-16 06:06:16,063 INFO L78 Accepts]: Start accepts. Automaton has 9976 states and 14583 transitions. Word has length 77 [2023-12-16 06:06:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:16,063 INFO L495 AbstractCegarLoop]: Abstraction has 9976 states and 14583 transitions. [2023-12-16 06:06:16,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-16 06:06:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 9976 states and 14583 transitions. [2023-12-16 06:06:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:06:16,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:16,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:06:16,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:16,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1082900329, now seen corresponding path program 1 times [2023-12-16 06:06:16,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:16,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482793704] [2023-12-16 06:06:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:06:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482793704] [2023-12-16 06:06:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482793704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:16,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:16,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:06:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397050160] [2023-12-16 06:06:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:06:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:06:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:06:16,113 INFO L87 Difference]: Start difference. First operand 9976 states and 14583 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-16 06:06:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:16,342 INFO L93 Difference]: Finished difference Result 20223 states and 29821 transitions. [2023-12-16 06:06:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:06:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2023-12-16 06:06:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:16,373 INFO L225 Difference]: With dead ends: 20223 [2023-12-16 06:06:16,374 INFO L226 Difference]: Without dead ends: 14716 [2023-12-16 06:06:16,381 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 [2023-12-16 06:06:16,382 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 76 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 299 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 [2023-12-16 06:06:16,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 299 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:06:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2023-12-16 06:06:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 14714. [2023-12-16 06:06:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14714 states, 14713 states have (on average 1.4567389383538367) internal successors, (21433), 14713 states have internal predecessors, (21433), 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) [2023-12-16 06:06:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14714 states to 14714 states and 21433 transitions. [2023-12-16 06:06:16,838 INFO L78 Accepts]: Start accepts. Automaton has 14714 states and 21433 transitions. Word has length 79 [2023-12-16 06:06:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:16,838 INFO L495 AbstractCegarLoop]: Abstraction has 14714 states and 21433 transitions. [2023-12-16 06:06:16,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-16 06:06:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 14714 states and 21433 transitions. [2023-12-16 06:06:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:16,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:16,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:16,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:06:16,842 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:16,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1694131117, now seen corresponding path program 1 times [2023-12-16 06:06:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414174219] [2023-12-16 06:06:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:06:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414174219] [2023-12-16 06:06:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414174219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115753653] [2023-12-16 06:06:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:17,006 INFO L87 Difference]: Start difference. First operand 14714 states and 21433 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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) [2023-12-16 06:06:18,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:18,794 INFO L93 Difference]: Finished difference Result 120266 states and 175233 transitions. [2023-12-16 06:06:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:18,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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 99 [2023-12-16 06:06:18,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:19,154 INFO L225 Difference]: With dead ends: 120266 [2023-12-16 06:06:19,154 INFO L226 Difference]: Without dead ends: 105608 [2023-12-16 06:06:19,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:19,195 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1320 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:19,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1403 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105608 states. [2023-12-16 06:06:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105608 to 29370. [2023-12-16 06:06:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29370 states, 29369 states have (on average 1.4510878817801083) internal successors, (42617), 29369 states have internal predecessors, (42617), 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) [2023-12-16 06:06:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29370 states to 29370 states and 42617 transitions. [2023-12-16 06:06:20,600 INFO L78 Accepts]: Start accepts. Automaton has 29370 states and 42617 transitions. Word has length 99 [2023-12-16 06:06:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:20,601 INFO L495 AbstractCegarLoop]: Abstraction has 29370 states and 42617 transitions. [2023-12-16 06:06:20,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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) [2023-12-16 06:06:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 29370 states and 42617 transitions. [2023-12-16 06:06:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:20,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:20,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:20,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:06:20,605 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1015161261, now seen corresponding path program 1 times [2023-12-16 06:06:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230247084] [2023-12-16 06:06:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:06:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230247084] [2023-12-16 06:06:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230247084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:20,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:20,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277164668] [2023-12-16 06:06:20,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:20,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:20,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:20,797 INFO L87 Difference]: Start difference. First operand 29370 states and 42617 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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) [2023-12-16 06:06:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:22,595 INFO L93 Difference]: Finished difference Result 134922 states and 196417 transitions. [2023-12-16 06:06:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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 99 [2023-12-16 06:06:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:22,887 INFO L225 Difference]: With dead ends: 134922 [2023-12-16 06:06:22,887 INFO L226 Difference]: Without dead ends: 120264 [2023-12-16 06:06:22,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:22,927 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1366 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:22,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 1363 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120264 states. [2023-12-16 06:06:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120264 to 51386. [2023-12-16 06:06:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51386 states, 51385 states have (on average 1.4446433784178263) internal successors, (74233), 51385 states have internal predecessors, (74233), 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) [2023-12-16 06:06:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51386 states to 51386 states and 74233 transitions. [2023-12-16 06:06:24,984 INFO L78 Accepts]: Start accepts. Automaton has 51386 states and 74233 transitions. Word has length 99 [2023-12-16 06:06:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:24,984 INFO L495 AbstractCegarLoop]: Abstraction has 51386 states and 74233 transitions. [2023-12-16 06:06:24,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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) [2023-12-16 06:06:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 51386 states and 74233 transitions. [2023-12-16 06:06:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:24,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:24,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:06:24,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1055105197, now seen corresponding path program 1 times [2023-12-16 06:06:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249774184] [2023-12-16 06:06:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:06:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249774184] [2023-12-16 06:06:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249774184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:25,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756886700] [2023-12-16 06:06:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:25,144 INFO L87 Difference]: Start difference. First operand 51386 states and 74233 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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) [2023-12-16 06:06:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:27,580 INFO L93 Difference]: Finished difference Result 149578 states and 217601 transitions. [2023-12-16 06:06:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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 99 [2023-12-16 06:06:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:27,835 INFO L225 Difference]: With dead ends: 149578 [2023-12-16 06:06:27,835 INFO L226 Difference]: Without dead ends: 134920 [2023-12-16 06:06:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:27,895 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1528 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:27,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1254 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134920 states. [2023-12-16 06:06:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134920 to 66042. [2023-12-16 06:06:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66042 states, 66041 states have (on average 1.4448145848790903) internal successors, (95417), 66041 states have internal predecessors, (95417), 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) [2023-12-16 06:06:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66042 states to 66042 states and 95417 transitions. [2023-12-16 06:06:30,202 INFO L78 Accepts]: Start accepts. Automaton has 66042 states and 95417 transitions. Word has length 99 [2023-12-16 06:06:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:30,203 INFO L495 AbstractCegarLoop]: Abstraction has 66042 states and 95417 transitions. [2023-12-16 06:06:30,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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) [2023-12-16 06:06:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 66042 states and 95417 transitions. [2023-12-16 06:06:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:30,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:30,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:06:30,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:30,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1318182573, now seen corresponding path program 1 times [2023-12-16 06:06:30,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:30,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592112874] [2023-12-16 06:06:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:30,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 06:06:30,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592112874] [2023-12-16 06:06:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592112874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:30,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:30,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981693545] [2023-12-16 06:06:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:30,342 INFO L87 Difference]: Start difference. First operand 66042 states and 95417 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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) [2023-12-16 06:06:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:32,993 INFO L93 Difference]: Finished difference Result 164234 states and 238785 transitions. [2023-12-16 06:06:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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 99 [2023-12-16 06:06:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:33,248 INFO L225 Difference]: With dead ends: 164234 [2023-12-16 06:06:33,248 INFO L226 Difference]: Without dead ends: 149576 [2023-12-16 06:06:33,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:33,294 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1418 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1346 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149576 states. [2023-12-16 06:06:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149576 to 80698. [2023-12-16 06:06:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80698 states, 80697 states have (on average 1.4449236031079222) internal successors, (116601), 80697 states have internal predecessors, (116601), 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) [2023-12-16 06:06:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80698 states to 80698 states and 116601 transitions. [2023-12-16 06:06:36,181 INFO L78 Accepts]: Start accepts. Automaton has 80698 states and 116601 transitions. Word has length 99 [2023-12-16 06:06:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:36,182 INFO L495 AbstractCegarLoop]: Abstraction has 80698 states and 116601 transitions. [2023-12-16 06:06:36,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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) [2023-12-16 06:06:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 80698 states and 116601 transitions. [2023-12-16 06:06:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:36,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:36,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:36,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:06:36,188 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:36,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash 429449133, now seen corresponding path program 1 times [2023-12-16 06:06:36,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:36,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983284015] [2023-12-16 06:06:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:06:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:36,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983284015] [2023-12-16 06:06:36,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983284015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:36,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:36,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816146424] [2023-12-16 06:06:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:36,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:36,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:36,319 INFO L87 Difference]: Start difference. First operand 80698 states and 116601 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2023-12-16 06:06:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:39,471 INFO L93 Difference]: Finished difference Result 178890 states and 259969 transitions. [2023-12-16 06:06:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:39,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 99 [2023-12-16 06:06:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:39,738 INFO L225 Difference]: With dead ends: 178890 [2023-12-16 06:06:39,739 INFO L226 Difference]: Without dead ends: 164232 [2023-12-16 06:06:39,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:39,785 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1259 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:39,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 1441 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164232 states. [2023-12-16 06:06:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164232 to 95354. [2023-12-16 06:06:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95354 states, 95353 states have (on average 1.4449991085755036) internal successors, (137785), 95353 states have internal predecessors, (137785), 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) [2023-12-16 06:06:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95354 states to 95354 states and 137785 transitions. [2023-12-16 06:06:42,885 INFO L78 Accepts]: Start accepts. Automaton has 95354 states and 137785 transitions. Word has length 99 [2023-12-16 06:06:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:42,886 INFO L495 AbstractCegarLoop]: Abstraction has 95354 states and 137785 transitions. [2023-12-16 06:06:42,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2023-12-16 06:06:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 95354 states and 137785 transitions. [2023-12-16 06:06:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:06:42,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:42,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:06:42,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1283744429, now seen corresponding path program 1 times [2023-12-16 06:06:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156720328] [2023-12-16 06:06:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:06:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156720328] [2023-12-16 06:06:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156720328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:43,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250320740] [2023-12-16 06:06:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:43,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:43,322 INFO L87 Difference]: Start difference. First operand 95354 states and 137785 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2023-12-16 06:06:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:46,754 INFO L93 Difference]: Finished difference Result 193546 states and 281153 transitions. [2023-12-16 06:06:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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 99 [2023-12-16 06:06:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:47,078 INFO L225 Difference]: With dead ends: 193546 [2023-12-16 06:06:47,079 INFO L226 Difference]: Without dead ends: 178888 [2023-12-16 06:06:47,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:47,141 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1254 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:47,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1591 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178888 states. [2023-12-16 06:06:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178888 to 110010. [2023-12-16 06:06:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110010 states, 110009 states have (on average 1.4450544955412739) internal successors, (158969), 110009 states have internal predecessors, (158969), 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) [2023-12-16 06:06:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110010 states to 110010 states and 158969 transitions. [2023-12-16 06:06:50,979 INFO L78 Accepts]: Start accepts. Automaton has 110010 states and 158969 transitions. Word has length 99 [2023-12-16 06:06:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:06:50,980 INFO L495 AbstractCegarLoop]: Abstraction has 110010 states and 158969 transitions. [2023-12-16 06:06:50,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2023-12-16 06:06:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 110010 states and 158969 transitions. [2023-12-16 06:06:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 06:06:50,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:06:50,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:06:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:06:50,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:06:50,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:06:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1656590734, now seen corresponding path program 1 times [2023-12-16 06:06:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:06:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884465453] [2023-12-16 06:06:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:06:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:06:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:06:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:06:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:06:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884465453] [2023-12-16 06:06:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884465453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:06:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:06:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 06:06:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66321354] [2023-12-16 06:06:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:06:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:06:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:06:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:06:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:06:51,105 INFO L87 Difference]: Start difference. First operand 110010 states and 158969 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2023-12-16 06:06:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:06:55,289 INFO L93 Difference]: Finished difference Result 199370 states and 289793 transitions. [2023-12-16 06:06:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:06:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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 101 [2023-12-16 06:06:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:06:55,700 INFO L225 Difference]: With dead ends: 199370 [2023-12-16 06:06:55,700 INFO L226 Difference]: Without dead ends: 189128 [2023-12-16 06:06:55,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:06:55,750 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1315 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:06:55,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1641 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:06:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189128 states. [2023-12-16 06:06:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189128 to 120250. [2023-12-16 06:06:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120250 states, 120249 states have (on average 1.446540095967534) internal successors, (173945), 120249 states have internal predecessors, (173945), 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) [2023-12-16 06:07:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120250 states to 120250 states and 173945 transitions. [2023-12-16 06:07:00,118 INFO L78 Accepts]: Start accepts. Automaton has 120250 states and 173945 transitions. Word has length 101 [2023-12-16 06:07:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:00,119 INFO L495 AbstractCegarLoop]: Abstraction has 120250 states and 173945 transitions. [2023-12-16 06:07:00,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2023-12-16 06:07:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 120250 states and 173945 transitions. [2023-12-16 06:07:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 06:07:00,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:00,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:00,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:07:00,125 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:00,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -491076619, now seen corresponding path program 1 times [2023-12-16 06:07:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:00,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647270764] [2023-12-16 06:07:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:00,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647270764] [2023-12-16 06:07:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647270764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477819147] [2023-12-16 06:07:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:00,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:00,259 INFO L87 Difference]: Start difference. First operand 120250 states and 173945 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-12-16 06:07:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:02,576 INFO L93 Difference]: Finished difference Result 207317 states and 301267 transitions. [2023-12-16 06:07:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2023-12-16 06:07:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:02,721 INFO L225 Difference]: With dead ends: 207317 [2023-12-16 06:07:02,721 INFO L226 Difference]: Without dead ends: 87123 [2023-12-16 06:07:02,775 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 [2023-12-16 06:07:02,777 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 66 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 323 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 [2023-12-16 06:07:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 323 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87123 states. [2023-12-16 06:07:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87123 to 87121. [2023-12-16 06:07:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87121 states, 87120 states have (on average 1.449586776859504) internal successors, (126288), 87120 states have internal predecessors, (126288), 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) [2023-12-16 06:07:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87121 states to 87121 states and 126288 transitions. [2023-12-16 06:07:05,489 INFO L78 Accepts]: Start accepts. Automaton has 87121 states and 126288 transitions. Word has length 101 [2023-12-16 06:07:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 87121 states and 126288 transitions. [2023-12-16 06:07:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-12-16 06:07:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 87121 states and 126288 transitions. [2023-12-16 06:07:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 06:07:05,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:05,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:07:05,493 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:05,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1400004754, now seen corresponding path program 1 times [2023-12-16 06:07:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155338117] [2023-12-16 06:07:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155338117] [2023-12-16 06:07:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155338117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:05,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44688599] [2023-12-16 06:07:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:05,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:05,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:05,554 INFO L87 Difference]: Start difference. First operand 87121 states and 126288 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-12-16 06:07:06,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:06,890 INFO L93 Difference]: Finished difference Result 130645 states and 189394 transitions. [2023-12-16 06:07:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2023-12-16 06:07:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:07,037 INFO L225 Difference]: With dead ends: 130645 [2023-12-16 06:07:07,037 INFO L226 Difference]: Without dead ends: 43603 [2023-12-16 06:07:07,068 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 [2023-12-16 06:07:07,069 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 61 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 308 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 [2023-12-16 06:07:07,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 308 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43603 states. [2023-12-16 06:07:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43603 to 43601. [2023-12-16 06:07:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43601 states, 43600 states have (on average 1.436697247706422) internal successors, (62640), 43600 states have internal predecessors, (62640), 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) [2023-12-16 06:07:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43601 states to 43601 states and 62640 transitions. [2023-12-16 06:07:08,356 INFO L78 Accepts]: Start accepts. Automaton has 43601 states and 62640 transitions. Word has length 102 [2023-12-16 06:07:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:08,356 INFO L495 AbstractCegarLoop]: Abstraction has 43601 states and 62640 transitions. [2023-12-16 06:07:08,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-12-16 06:07:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 43601 states and 62640 transitions. [2023-12-16 06:07:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-16 06:07:08,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:08,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:08,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:07:08,359 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:08,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash -216982340, now seen corresponding path program 1 times [2023-12-16 06:07:08,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:08,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248347248] [2023-12-16 06:07:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:08,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248347248] [2023-12-16 06:07:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248347248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:08,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:08,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348442548] [2023-12-16 06:07:08,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:08,427 INFO L87 Difference]: Start difference. First operand 43601 states and 62640 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-12-16 06:07:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:09,010 INFO L93 Difference]: Finished difference Result 65365 states and 93922 transitions. [2023-12-16 06:07:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2023-12-16 06:07:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:09,038 INFO L225 Difference]: With dead ends: 65365 [2023-12-16 06:07:09,039 INFO L226 Difference]: Without dead ends: 21843 [2023-12-16 06:07:09,064 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 [2023-12-16 06:07:09,064 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 58 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 293 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 [2023-12-16 06:07:09,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 293 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2023-12-16 06:07:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 21841. [2023-12-16 06:07:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21841 states, 21840 states have (on average 1.4234432234432235) internal successors, (31088), 21840 states have internal predecessors, (31088), 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) [2023-12-16 06:07:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21841 states to 21841 states and 31088 transitions. [2023-12-16 06:07:09,715 INFO L78 Accepts]: Start accepts. Automaton has 21841 states and 31088 transitions. Word has length 104 [2023-12-16 06:07:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:09,715 INFO L495 AbstractCegarLoop]: Abstraction has 21841 states and 31088 transitions. [2023-12-16 06:07:09,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-12-16 06:07:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21841 states and 31088 transitions. [2023-12-16 06:07:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 06:07:09,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:09,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:07:09,717 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:09,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:09,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1524474762, now seen corresponding path program 1 times [2023-12-16 06:07:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274658171] [2023-12-16 06:07:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:09,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274658171] [2023-12-16 06:07:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274658171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:09,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712844961] [2023-12-16 06:07:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:09,858 INFO L87 Difference]: Start difference. First operand 21841 states and 31088 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-12-16 06:07:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:10,127 INFO L93 Difference]: Finished difference Result 32725 states and 46594 transitions. [2023-12-16 06:07:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2023-12-16 06:07:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:10,141 INFO L225 Difference]: With dead ends: 32725 [2023-12-16 06:07:10,142 INFO L226 Difference]: Without dead ends: 10963 [2023-12-16 06:07:10,156 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 [2023-12-16 06:07:10,158 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 55 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 278 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 [2023-12-16 06:07:10,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 278 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10963 states. [2023-12-16 06:07:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10963 to 10961. [2023-12-16 06:07:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 10960 states have (on average 1.4094890510948905) internal successors, (15448), 10960 states have internal predecessors, (15448), 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) [2023-12-16 06:07:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 15448 transitions. [2023-12-16 06:07:10,437 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 15448 transitions. Word has length 106 [2023-12-16 06:07:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:10,437 INFO L495 AbstractCegarLoop]: Abstraction has 10961 states and 15448 transitions. [2023-12-16 06:07:10,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-12-16 06:07:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 15448 transitions. [2023-12-16 06:07:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 06:07:10,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:10,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:07:10,440 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:10,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 39588824, now seen corresponding path program 1 times [2023-12-16 06:07:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:10,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48977593] [2023-12-16 06:07:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:10,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48977593] [2023-12-16 06:07:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48977593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616499281] [2023-12-16 06:07:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:10,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:10,525 INFO L87 Difference]: Start difference. First operand 10961 states and 15448 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2023-12-16 06:07:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:10,652 INFO L93 Difference]: Finished difference Result 16405 states and 23134 transitions. [2023-12-16 06:07:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2023-12-16 06:07:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:10,659 INFO L225 Difference]: With dead ends: 16405 [2023-12-16 06:07:10,659 INFO L226 Difference]: Without dead ends: 5523 [2023-12-16 06:07:10,665 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 [2023-12-16 06:07:10,666 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 52 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 263 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 [2023-12-16 06:07:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-12-16 06:07:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5521. [2023-12-16 06:07:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5521 states, 5520 states have (on average 1.3942028985507247) internal successors, (7696), 5520 states have internal predecessors, (7696), 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) [2023-12-16 06:07:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 7696 transitions. [2023-12-16 06:07:10,795 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 7696 transitions. Word has length 108 [2023-12-16 06:07:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:10,795 INFO L495 AbstractCegarLoop]: Abstraction has 5521 states and 7696 transitions. [2023-12-16 06:07:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2023-12-16 06:07:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 7696 transitions. [2023-12-16 06:07:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:07:10,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:10,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:07:10,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:10,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash -242397786, now seen corresponding path program 1 times [2023-12-16 06:07:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236263728] [2023-12-16 06:07:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236263728] [2023-12-16 06:07:10,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236263728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:10,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:10,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224478378] [2023-12-16 06:07:10,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:10,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:10,861 INFO L87 Difference]: Start difference. First operand 5521 states and 7696 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-12-16 06:07:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:10,923 INFO L93 Difference]: Finished difference Result 8245 states and 11506 transitions. [2023-12-16 06:07:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:10,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2023-12-16 06:07:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:10,926 INFO L225 Difference]: With dead ends: 8245 [2023-12-16 06:07:10,926 INFO L226 Difference]: Without dead ends: 2803 [2023-12-16 06:07:10,928 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 [2023-12-16 06:07:10,928 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 248 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 [2023-12-16 06:07:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 248 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2023-12-16 06:07:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2801. [2023-12-16 06:07:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2800 states have (on average 1.3764285714285713) internal successors, (3854), 2800 states have internal predecessors, (3854), 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) [2023-12-16 06:07:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3854 transitions. [2023-12-16 06:07:10,992 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3854 transitions. Word has length 110 [2023-12-16 06:07:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:10,993 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 3854 transitions. [2023-12-16 06:07:10,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-12-16 06:07:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3854 transitions. [2023-12-16 06:07:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:07:10,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:10,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 06:07:10,994 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:10,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash -401985292, now seen corresponding path program 1 times [2023-12-16 06:07:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574037730] [2023-12-16 06:07:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574037730] [2023-12-16 06:07:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574037730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436815594] [2023-12-16 06:07:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:11,051 INFO L87 Difference]: Start difference. First operand 2801 states and 3854 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-12-16 06:07:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:11,085 INFO L93 Difference]: Finished difference Result 4165 states and 5743 transitions. [2023-12-16 06:07:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2023-12-16 06:07:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:11,087 INFO L225 Difference]: With dead ends: 4165 [2023-12-16 06:07:11,088 INFO L226 Difference]: Without dead ends: 1443 [2023-12-16 06:07:11,089 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 [2023-12-16 06:07:11,089 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 46 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 233 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 [2023-12-16 06:07:11,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 233 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-12-16 06:07:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1441. [2023-12-16 06:07:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 1.3541666666666667) internal successors, (1950), 1440 states have internal predecessors, (1950), 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) [2023-12-16 06:07:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1950 transitions. [2023-12-16 06:07:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1950 transitions. Word has length 112 [2023-12-16 06:07:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:11,121 INFO L495 AbstractCegarLoop]: Abstraction has 1441 states and 1950 transitions. [2023-12-16 06:07:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-12-16 06:07:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1950 transitions. [2023-12-16 06:07:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 06:07:11,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:11,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 06:07:11,123 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:11,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1425826366, now seen corresponding path program 1 times [2023-12-16 06:07:11,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:11,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23482240] [2023-12-16 06:07:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23482240] [2023-12-16 06:07:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23482240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:07:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333804328] [2023-12-16 06:07:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:07:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:07:11,971 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) [2023-12-16 06:07:11,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:07:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:12,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 06:07:12,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:07:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:12,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:07:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333804328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:07:12,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:07:12,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 20 [2023-12-16 06:07:12,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388377239] [2023-12-16 06:07:12,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:07:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 06:07:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 06:07:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-16 06:07:12,632 INFO L87 Difference]: Start difference. First operand 1441 states and 1950 transitions. Second operand has 20 states, 20 states have (on average 16.65) internal successors, (333), 20 states have internal predecessors, (333), 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... [2023-12-16 06:07:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:07:13,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-12-16 06:07:13,107 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 357 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:13,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 263 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:07:13,108 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:07:13,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 06:07:13,124 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:07:13,138 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 [2023-12-16 06:07:13,308 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,SelfDestructingSolverStorable27 [2023-12-16 06:07:13,309 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1441states) and FLOYD_HOARE automaton (currently 7 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (59 states constructed, input type IntersectNwa). [2023-12-16 06:07:13,312 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] [2023-12-16 06:07:13,314 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:07:13,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:07:13 BoogieIcfgContainer [2023-12-16 06:07:13,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:07:13,317 INFO L158 Benchmark]: Toolchain (without parser) took 61864.11ms. Allocated memory was 179.3MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 138.2MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-16 06:07:13,317 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 179.3MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:07:13,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.20ms. Allocated memory is still 179.3MB. Free memory was 137.9MB in the beginning and 120.4MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 06:07:13,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.24ms. Allocated memory is still 179.3MB. Free memory was 120.4MB in the beginning and 117.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:07:13,318 INFO L158 Benchmark]: Boogie Preprocessor took 51.31ms. Allocated memory is still 179.3MB. Free memory was 117.2MB in the beginning and 113.4MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:07:13,319 INFO L158 Benchmark]: RCFGBuilder took 593.39ms. Allocated memory is still 179.3MB. Free memory was 113.4MB in the beginning and 136.8MB in the end (delta: -23.4MB). Peak memory consumption was 24.8MB. Max. memory is 8.0GB. [2023-12-16 06:07:13,320 INFO L158 Benchmark]: TraceAbstraction took 60929.78ms. Allocated memory was 179.3MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 135.7MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-16 06:07:13,323 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 179.3MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.20ms. Allocated memory is still 179.3MB. Free memory was 137.9MB in the beginning and 120.4MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.24ms. Allocated memory is still 179.3MB. Free memory was 120.4MB in the beginning and 117.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.31ms. Allocated memory is still 179.3MB. Free memory was 117.2MB in the beginning and 113.4MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 593.39ms. Allocated memory is still 179.3MB. Free memory was 113.4MB in the beginning and 136.8MB in the end (delta: -23.4MB). Peak memory consumption was 24.8MB. Max. memory is 8.0GB. * TraceAbstraction took 60929.78ms. Allocated memory was 179.3MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 135.7MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.1GB. 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: 587]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 587). Cancelled while NwaCegarLoop was constructing difference of abstraction (1441states) and FLOYD_HOARE automaton (currently 7 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (59 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.9s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12861 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12861 mSDsluCounter, 19176 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14058 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2153 IncrementalHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 5118 mSDtfsCounter, 2153 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 439 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120250occurred in iteration=20, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 490204 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2638 ConstructedInterpolants, 0 QuantifiedInterpolants, 16559 SizeOfPredicates, 13 NumberOfNonLiveVariables, 454 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 30 InterpolantComputations, 27 PerfectInterpolantSequences, 282/326 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