/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_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:00:59,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:00:59,846 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 06:00:59,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:00:59,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:00:59,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:00:59,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:00:59,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:00:59,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:00:59,878 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:00:59,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:00:59,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:00:59,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:00:59,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:00:59,880 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:00:59,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:00:59,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:00:59,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:00:59,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:00:59,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:00:59,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:00:59,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:00:59,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:00:59,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:00:59,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:00:59,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:00:59,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:00:59,883 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:00:59,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:00:59,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:00:59,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:00:59,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:00:59,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:00:59,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:01:00,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:01:00,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:01:00,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:01:00,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:01:00,164 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:01:00,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 06:01:01,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:01:01,567 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:01:01,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 06:01:01,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0888ebc64/3ea0e4aaa51d4b63aef7a7495c6dc6f6/FLAGcd59b121a [2023-12-16 06:01:01,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0888ebc64/3ea0e4aaa51d4b63aef7a7495c6dc6f6 [2023-12-16 06:01:01,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:01:01,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:01:01,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:01:01,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:01:01,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:01:01,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448c8ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01, skipping insertion in model container [2023-12-16 06:01:01,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:01:01,828 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_floodmax.3_overflow.ufo.UNBOUNDED.pals.c[12924,12937] [2023-12-16 06:01:01,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:01:01,843 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:01:01,895 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_floodmax.3_overflow.ufo.UNBOUNDED.pals.c[12924,12937] [2023-12-16 06:01:01,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:01:01,910 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:01:01,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01 WrapperNode [2023-12-16 06:01:01,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:01:01,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:01:01,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:01:01,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:01:01,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,958 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 439 [2023-12-16 06:01:01,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:01:01,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:01:01,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:01:01,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:01:01,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:01,984 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 06:01:02,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:01:02,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:01:02,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:01:02,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:01:02,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (1/1) ... [2023-12-16 06:01:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:01:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:01:02,082 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 06:01:02,115 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 06:01:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:01:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:01:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:01:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:01:02,210 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:01:02,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:01:02,611 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:01:02,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:01:02,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:01:02,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:02 BoogieIcfgContainer [2023-12-16 06:01:02,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:01:02,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:01:02,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:01:02,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:01:02,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:01:01" (1/3) ... [2023-12-16 06:01:02,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b79a8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:02, skipping insertion in model container [2023-12-16 06:01:02,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:01:01" (2/3) ... [2023-12-16 06:01:02,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b79a8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:01:02, skipping insertion in model container [2023-12-16 06:01:02,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:01:02" (3/3) ... [2023-12-16 06:01:02,643 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 06:01:02,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:01:02,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:01:02,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:01:02,698 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;@35691f16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:01:02,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:01:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 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 06:01:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:01:02,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:02,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:02,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:02,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1477667755, now seen corresponding path program 1 times [2023-12-16 06:01:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668677459] [2023-12-16 06:01:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:02,946 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 06:01:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668677459] [2023-12-16 06:01:02,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668677459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:02,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:02,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:01:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378977344] [2023-12-16 06:01:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:02,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:01:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:01:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:01:02,981 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,028 INFO L93 Difference]: Finished difference Result 172 states and 307 transitions. [2023-12-16 06:01:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:01:03,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 06:01:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,039 INFO L225 Difference]: With dead ends: 172 [2023-12-16 06:01:03,039 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 06:01:03,041 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 06:01:03,044 INFO L413 NwaCegarLoop]: 196 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, 196 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 06:01:03,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 06:01:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-16 06:01:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7927927927927927) internal successors, (199), 111 states have internal predecessors, (199), 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 06:01:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 199 transitions. [2023-12-16 06:01:03,086 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 199 transitions. Word has length 34 [2023-12-16 06:01:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,086 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 199 transitions. [2023-12-16 06:01:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 199 transitions. [2023-12-16 06:01:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:01:03,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:01:03,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:01:03,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -211275987, now seen corresponding path program 1 times [2023-12-16 06:01:03,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760317081] [2023-12-16 06:01:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,303 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 06:01:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760317081] [2023-12-16 06:01:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760317081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:01:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068266415] [2023-12-16 06:01:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:01:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:01:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:01:03,311 INFO L87 Difference]: Start difference. First operand 112 states and 199 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,367 INFO L93 Difference]: Finished difference Result 172 states and 301 transitions. [2023-12-16 06:01:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:01:03,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 06:01:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,368 INFO L225 Difference]: With dead ends: 172 [2023-12-16 06:01:03,368 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 06:01:03,369 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 06:01:03,370 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 06:01:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-16 06:01:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 111 states have internal predecessors, (172), 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 06:01:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 172 transitions. [2023-12-16 06:01:03,375 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 172 transitions. Word has length 34 [2023-12-16 06:01:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,375 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 172 transitions. [2023-12-16 06:01:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 172 transitions. [2023-12-16 06:01:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:01:03,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,377 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] [2023-12-16 06:01:03,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:01:03,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -985754314, now seen corresponding path program 1 times [2023-12-16 06:01:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113651230] [2023-12-16 06:01:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,461 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 06:01:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113651230] [2023-12-16 06:01:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113651230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413087429] [2023-12-16 06:01:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,467 INFO L87 Difference]: Start difference. First operand 112 states and 172 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 06:01:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,511 INFO L93 Difference]: Finished difference Result 217 states and 353 transitions. [2023-12-16 06:01:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-16 06:01:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,515 INFO L225 Difference]: With dead ends: 217 [2023-12-16 06:01:03,515 INFO L226 Difference]: Without dead ends: 160 [2023-12-16 06:01:03,516 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 06:01:03,516 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 363 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-16 06:01:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-12-16 06:01:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 157 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 248 transitions. [2023-12-16 06:01:03,525 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 248 transitions. Word has length 60 [2023-12-16 06:01:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,525 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 248 transitions. [2023-12-16 06:01:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 06:01:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 248 transitions. [2023-12-16 06:01:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:01:03,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,527 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] [2023-12-16 06:01:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:01:03,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1305875761, now seen corresponding path program 1 times [2023-12-16 06:01:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764223563] [2023-12-16 06:01:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,576 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 06:01:03,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764223563] [2023-12-16 06:01:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764223563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472962441] [2023-12-16 06:01:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,579 INFO L87 Difference]: Start difference. First operand 158 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:01:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,594 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2023-12-16 06:01:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-12-16 06:01:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,596 INFO L225 Difference]: With dead ends: 263 [2023-12-16 06:01:03,596 INFO L226 Difference]: Without dead ends: 206 [2023-12-16 06:01:03,596 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 06:01:03,597 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 83 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-16 06:01:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-12-16 06:01:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 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 06:01:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 327 transitions. [2023-12-16 06:01:03,605 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 327 transitions. Word has length 62 [2023-12-16 06:01:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,605 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 327 transitions. [2023-12-16 06:01:03,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:01:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 327 transitions. [2023-12-16 06:01:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:01:03,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,607 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] [2023-12-16 06:01:03,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:01:03,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1944934066, now seen corresponding path program 1 times [2023-12-16 06:01:03,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774198109] [2023-12-16 06:01:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,678 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 06:01:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774198109] [2023-12-16 06:01:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774198109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774311655] [2023-12-16 06:01:03,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,680 INFO L87 Difference]: Start difference. First operand 204 states and 327 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:01:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,698 INFO L93 Difference]: Finished difference Result 477 states and 792 transitions. [2023-12-16 06:01:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-12-16 06:01:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,700 INFO L225 Difference]: With dead ends: 477 [2023-12-16 06:01:03,700 INFO L226 Difference]: Without dead ends: 330 [2023-12-16 06:01:03,701 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 06:01:03,701 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 76 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-16 06:01:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-12-16 06:01:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6391437308868502) internal successors, (536), 327 states have internal predecessors, (536), 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 06:01:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 536 transitions. [2023-12-16 06:01:03,712 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 536 transitions. Word has length 62 [2023-12-16 06:01:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,712 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 536 transitions. [2023-12-16 06:01:03,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:01:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 536 transitions. [2023-12-16 06:01:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:01:03,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,713 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] [2023-12-16 06:01:03,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:01:03,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,714 INFO L85 PathProgramCache]: Analyzing trace with hash -386894903, now seen corresponding path program 1 times [2023-12-16 06:01:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698751271] [2023-12-16 06:01:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,758 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 06:01:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698751271] [2023-12-16 06:01:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698751271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604687895] [2023-12-16 06:01:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,760 INFO L87 Difference]: Start difference. First operand 328 states and 536 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:01:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,777 INFO L93 Difference]: Finished difference Result 595 states and 989 transitions. [2023-12-16 06:01:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-16 06:01:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,779 INFO L225 Difference]: With dead ends: 595 [2023-12-16 06:01:03,780 INFO L226 Difference]: Without dead ends: 448 [2023-12-16 06:01:03,780 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 06:01:03,781 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-16 06:01:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-12-16 06:01:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.644943820224719) internal successors, (732), 445 states have internal predecessors, (732), 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 06:01:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 732 transitions. [2023-12-16 06:01:03,792 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 732 transitions. Word has length 64 [2023-12-16 06:01:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,792 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 732 transitions. [2023-12-16 06:01:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:01:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 732 transitions. [2023-12-16 06:01:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:01:03,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,793 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] [2023-12-16 06:01:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:01:03,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 892182118, now seen corresponding path program 1 times [2023-12-16 06:01:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29266049] [2023-12-16 06:01:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29266049] [2023-12-16 06:01:03,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29266049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804763103] [2023-12-16 06:01:03,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,868 INFO L87 Difference]: Start difference. First operand 446 states and 732 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:01:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,889 INFO L93 Difference]: Finished difference Result 1149 states and 1913 transitions. [2023-12-16 06:01:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-16 06:01:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,892 INFO L225 Difference]: With dead ends: 1149 [2023-12-16 06:01:03,892 INFO L226 Difference]: Without dead ends: 766 [2023-12-16 06:01:03,893 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 06:01:03,893 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 70 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-16 06:01:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 764. [2023-12-16 06:01:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.6435124508519003) internal successors, (1254), 763 states have internal predecessors, (1254), 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 06:01:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1254 transitions. [2023-12-16 06:01:03,911 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1254 transitions. Word has length 64 [2023-12-16 06:01:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:03,911 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 1254 transitions. [2023-12-16 06:01:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:01:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1254 transitions. [2023-12-16 06:01:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 06:01:03,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:03,912 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] [2023-12-16 06:01:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:01:03,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:03,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 539603809, now seen corresponding path program 1 times [2023-12-16 06:01:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399319097] [2023-12-16 06:01:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:03,954 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 06:01:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:03,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399319097] [2023-12-16 06:01:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399319097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:03,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180535100] [2023-12-16 06:01:03,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:03,956 INFO L87 Difference]: Start difference. First operand 764 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:03,978 INFO L93 Difference]: Finished difference Result 1437 states and 2381 transitions. [2023-12-16 06:01:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-16 06:01:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:03,982 INFO L225 Difference]: With dead ends: 1437 [2023-12-16 06:01:03,982 INFO L226 Difference]: Without dead ends: 1054 [2023-12-16 06:01:03,983 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 06:01:03,983 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:03,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-16 06:01:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2023-12-16 06:01:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.637488106565176) internal successors, (1721), 1051 states have internal predecessors, (1721), 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 06:01:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1721 transitions. [2023-12-16 06:01:04,003 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1721 transitions. Word has length 66 [2023-12-16 06:01:04,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:04,004 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1721 transitions. [2023-12-16 06:01:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:04,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1721 transitions. [2023-12-16 06:01:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 06:01:04,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:04,004 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] [2023-12-16 06:01:04,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:01:04,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:04,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1422478210, now seen corresponding path program 1 times [2023-12-16 06:01:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884275675] [2023-12-16 06:01:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:04,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:04,079 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 06:01:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884275675] [2023-12-16 06:01:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884275675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:01:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714338120] [2023-12-16 06:01:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:01:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:01:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:04,081 INFO L87 Difference]: Start difference. First operand 1052 states and 1721 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:04,240 INFO L93 Difference]: Finished difference Result 5336 states and 8927 transitions. [2023-12-16 06:01:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:01:04,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-16 06:01:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:04,254 INFO L225 Difference]: With dead ends: 5336 [2023-12-16 06:01:04,254 INFO L226 Difference]: Without dead ends: 4353 [2023-12-16 06:01:04,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:01:04,258 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 576 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:04,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1062 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:01:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2023-12-16 06:01:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 1969. [2023-12-16 06:01:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.6346544715447155) internal successors, (3217), 1968 states have internal predecessors, (3217), 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 06:01:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3217 transitions. [2023-12-16 06:01:04,323 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3217 transitions. Word has length 66 [2023-12-16 06:01:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 1969 states and 3217 transitions. [2023-12-16 06:01:04,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:01:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3217 transitions. [2023-12-16 06:01:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:01:04,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:04,324 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] [2023-12-16 06:01:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:01:04,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:04,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872637, now seen corresponding path program 1 times [2023-12-16 06:01:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839642041] [2023-12-16 06:01:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:04,413 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 06:01:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839642041] [2023-12-16 06:01:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839642041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:04,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:01:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600393278] [2023-12-16 06:01:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:04,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:01:04,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:01:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:01:04,415 INFO L87 Difference]: Start difference. First operand 1969 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 06:01:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:04,517 INFO L93 Difference]: Finished difference Result 6431 states and 10655 transitions. [2023-12-16 06:01:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:01:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2023-12-16 06:01:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:04,531 INFO L225 Difference]: With dead ends: 6431 [2023-12-16 06:01:04,531 INFO L226 Difference]: Without dead ends: 4531 [2023-12-16 06:01:04,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:04,537 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 280 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:04,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 542 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2023-12-16 06:01:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 3231. [2023-12-16 06:01:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 1.6368421052631579) internal successors, (5287), 3230 states have internal predecessors, (5287), 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 06:01:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 5287 transitions. [2023-12-16 06:01:04,627 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 5287 transitions. Word has length 67 [2023-12-16 06:01:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:04,627 INFO L495 AbstractCegarLoop]: Abstraction has 3231 states and 5287 transitions. [2023-12-16 06:01:04,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 06:01:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 5287 transitions. [2023-12-16 06:01:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 06:01:04,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:04,628 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] [2023-12-16 06:01:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:01:04,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:04,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1091384583, now seen corresponding path program 1 times [2023-12-16 06:01:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114383104] [2023-12-16 06:01:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:04,685 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 06:01:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114383104] [2023-12-16 06:01:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114383104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:04,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:04,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:01:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935747825] [2023-12-16 06:01:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:01:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:01:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:01:04,686 INFO L87 Difference]: Start difference. First operand 3231 states and 5287 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 06:01:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:04,819 INFO L93 Difference]: Finished difference Result 10391 states and 17091 transitions. [2023-12-16 06:01:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:01:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2023-12-16 06:01:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:04,842 INFO L225 Difference]: With dead ends: 10391 [2023-12-16 06:01:04,842 INFO L226 Difference]: Without dead ends: 7229 [2023-12-16 06:01:04,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:04,849 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 278 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:04,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 539 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2023-12-16 06:01:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 5201. [2023-12-16 06:01:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 1.6259615384615385) internal successors, (8455), 5200 states have internal predecessors, (8455), 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 06:01:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 8455 transitions. [2023-12-16 06:01:05,067 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 8455 transitions. Word has length 68 [2023-12-16 06:01:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:05,068 INFO L495 AbstractCegarLoop]: Abstraction has 5201 states and 8455 transitions. [2023-12-16 06:01:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 06:01:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 8455 transitions. [2023-12-16 06:01:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 06:01:05,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:05,070 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] [2023-12-16 06:01:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:01:05,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:05,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash -578633876, now seen corresponding path program 1 times [2023-12-16 06:01:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033154606] [2023-12-16 06:01:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:05,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:05,138 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 06:01:05,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033154606] [2023-12-16 06:01:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033154606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:05,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:01:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506470543] [2023-12-16 06:01:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:05,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:01:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:01:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:01:05,140 INFO L87 Difference]: Start difference. First operand 5201 states and 8455 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 06:01:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:05,339 INFO L93 Difference]: Finished difference Result 16423 states and 26807 transitions. [2023-12-16 06:01:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:01:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2023-12-16 06:01:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:05,387 INFO L225 Difference]: With dead ends: 16423 [2023-12-16 06:01:05,387 INFO L226 Difference]: Without dead ends: 11291 [2023-12-16 06:01:05,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:05,400 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 276 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:05,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11291 states. [2023-12-16 06:01:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11291 to 8203. [2023-12-16 06:01:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.6146061936113143) internal successors, (13243), 8202 states have internal predecessors, (13243), 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 06:01:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13243 transitions. [2023-12-16 06:01:05,742 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13243 transitions. Word has length 69 [2023-12-16 06:01:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:05,742 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13243 transitions. [2023-12-16 06:01:05,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 06:01:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13243 transitions. [2023-12-16 06:01:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 06:01:05,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:05,743 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] [2023-12-16 06:01:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:01:05,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:05,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 802275316, now seen corresponding path program 1 times [2023-12-16 06:01:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:05,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433606733] [2023-12-16 06:01:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:05,865 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 06:01:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433606733] [2023-12-16 06:01:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433606733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:01:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977699208] [2023-12-16 06:01:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:01:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:01:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:05,867 INFO L87 Difference]: Start difference. First operand 8203 states and 13243 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 06:01:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:06,033 INFO L93 Difference]: Finished difference Result 16339 states and 26396 transitions. [2023-12-16 06:01:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:01:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2023-12-16 06:01:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:06,049 INFO L225 Difference]: With dead ends: 16339 [2023-12-16 06:01:06,049 INFO L226 Difference]: Without dead ends: 8205 [2023-12-16 06:01:06,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:01:06,061 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 70 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:06,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 593 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2023-12-16 06:01:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8203. [2023-12-16 06:01:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.599366008290661) internal successors, (13118), 8202 states have internal predecessors, (13118), 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 06:01:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13118 transitions. [2023-12-16 06:01:06,312 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13118 transitions. Word has length 71 [2023-12-16 06:01:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:06,312 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13118 transitions. [2023-12-16 06:01:06,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 06:01:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13118 transitions. [2023-12-16 06:01:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:01:06,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:06,313 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] [2023-12-16 06:01:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:01:06,314 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:06,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1920185732, now seen corresponding path program 1 times [2023-12-16 06:01:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795673178] [2023-12-16 06:01:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:06,464 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 06:01:06,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:06,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795673178] [2023-12-16 06:01:06,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795673178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:06,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:06,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:01:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716863618] [2023-12-16 06:01:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:01:06,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:01:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:06,466 INFO L87 Difference]: Start difference. First operand 8203 states and 13118 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 06:01:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:06,753 INFO L93 Difference]: Finished difference Result 23501 states and 37734 transitions. [2023-12-16 06:01:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:01:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2023-12-16 06:01:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:06,781 INFO L225 Difference]: With dead ends: 23501 [2023-12-16 06:01:06,782 INFO L226 Difference]: Without dead ends: 15367 [2023-12-16 06:01:06,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:01:06,790 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 135 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:06,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2023-12-16 06:01:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 15365. [2023-12-16 06:01:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.582725852642541) internal successors, (24317), 15364 states have internal predecessors, (24317), 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 06:01:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 24317 transitions. [2023-12-16 06:01:07,202 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 24317 transitions. Word has length 74 [2023-12-16 06:01:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:07,202 INFO L495 AbstractCegarLoop]: Abstraction has 15365 states and 24317 transitions. [2023-12-16 06:01:07,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 06:01:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 24317 transitions. [2023-12-16 06:01:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:01:07,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:07,203 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 06:01:07,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:01:07,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:07,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -618303701, now seen corresponding path program 1 times [2023-12-16 06:01:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518865646] [2023-12-16 06:01:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:07,376 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 06:01:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518865646] [2023-12-16 06:01:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518865646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:01:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990483808] [2023-12-16 06:01:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:01:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:01:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:01:07,378 INFO L87 Difference]: Start difference. First operand 15365 states and 24317 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 06:01:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:07,579 INFO L93 Difference]: Finished difference Result 16453 states and 25766 transitions. [2023-12-16 06:01:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:01:07,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 06:01:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:07,674 INFO L225 Difference]: With dead ends: 16453 [2023-12-16 06:01:07,674 INFO L226 Difference]: Without dead ends: 16451 [2023-12-16 06:01:07,679 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 06:01:07,680 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:07,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 491 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16451 states. [2023-12-16 06:01:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16451 to 16089. [2023-12-16 06:01:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16089 states, 16088 states have (on average 1.555942317255097) internal successors, (25032), 16088 states have internal predecessors, (25032), 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 06:01:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16089 states to 16089 states and 25032 transitions. [2023-12-16 06:01:08,061 INFO L78 Accepts]: Start accepts. Automaton has 16089 states and 25032 transitions. Word has length 75 [2023-12-16 06:01:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 16089 states and 25032 transitions. [2023-12-16 06:01:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 06:01:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16089 states and 25032 transitions. [2023-12-16 06:01:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:08,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:08,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:01:08,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:08,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2029578417, now seen corresponding path program 1 times [2023-12-16 06:01:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:08,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777289050] [2023-12-16 06:01:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777289050] [2023-12-16 06:01:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777289050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553613014] [2023-12-16 06:01:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:08,115 INFO L87 Difference]: Start difference. First operand 16089 states and 25032 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:08,565 INFO L93 Difference]: Finished difference Result 48009 states and 74629 transitions. [2023-12-16 06:01:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:08,648 INFO L225 Difference]: With dead ends: 48009 [2023-12-16 06:01:08,649 INFO L226 Difference]: Without dead ends: 31985 [2023-12-16 06:01:08,672 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 06:01:08,672 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:08,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 399 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31985 states. [2023-12-16 06:01:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31985 to 31983. [2023-12-16 06:01:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31983 states, 31982 states have (on average 1.5403039209555376) internal successors, (49262), 31982 states have internal predecessors, (49262), 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 06:01:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31983 states to 31983 states and 49262 transitions. [2023-12-16 06:01:09,471 INFO L78 Accepts]: Start accepts. Automaton has 31983 states and 49262 transitions. Word has length 99 [2023-12-16 06:01:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:09,471 INFO L495 AbstractCegarLoop]: Abstraction has 31983 states and 49262 transitions. [2023-12-16 06:01:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 31983 states and 49262 transitions. [2023-12-16 06:01:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:09,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:09,474 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] [2023-12-16 06:01:09,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:01:09,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:09,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1881455852, now seen corresponding path program 1 times [2023-12-16 06:01:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325339960] [2023-12-16 06:01:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:01:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325339960] [2023-12-16 06:01:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325339960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:09,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074911331] [2023-12-16 06:01:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:09,535 INFO L87 Difference]: Start difference. First operand 31983 states and 49262 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 06:01:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:10,433 INFO L93 Difference]: Finished difference Result 95477 states and 146924 transitions. [2023-12-16 06:01:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:10,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 06:01:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:10,603 INFO L225 Difference]: With dead ends: 95477 [2023-12-16 06:01:10,604 INFO L226 Difference]: Without dead ends: 63592 [2023-12-16 06:01:10,640 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 06:01:10,642 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 95 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:10,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 374 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63592 states. [2023-12-16 06:01:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63592 to 63590. [2023-12-16 06:01:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63590 states, 63589 states have (on average 1.524508955951501) internal successors, (96942), 63589 states have internal predecessors, (96942), 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 06:01:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63590 states to 63590 states and 96942 transitions. [2023-12-16 06:01:12,340 INFO L78 Accepts]: Start accepts. Automaton has 63590 states and 96942 transitions. Word has length 99 [2023-12-16 06:01:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:12,342 INFO L495 AbstractCegarLoop]: Abstraction has 63590 states and 96942 transitions. [2023-12-16 06:01:12,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 06:01:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 63590 states and 96942 transitions. [2023-12-16 06:01:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:12,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:12,351 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 06:01:12,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:01:12,352 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:12,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1491540327, now seen corresponding path program 1 times [2023-12-16 06:01:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:12,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686596562] [2023-12-16 06:01:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 06:01:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:12,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686596562] [2023-12-16 06:01:12,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686596562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:12,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843750758] [2023-12-16 06:01:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:12,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:12,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:12,411 INFO L87 Difference]: Start difference. First operand 63590 states and 96942 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 06:01:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:14,024 INFO L93 Difference]: Finished difference Result 189890 states and 289215 transitions. [2023-12-16 06:01:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 06:01:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:14,357 INFO L225 Difference]: With dead ends: 189890 [2023-12-16 06:01:14,357 INFO L226 Difference]: Without dead ends: 126472 [2023-12-16 06:01:14,433 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 06:01:14,436 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:14,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126472 states. [2023-12-16 06:01:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126472 to 126470. [2023-12-16 06:01:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126470 states, 126469 states have (on average 1.508598945196056) internal successors, (190791), 126469 states have internal predecessors, (190791), 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 06:01:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126470 states to 126470 states and 190791 transitions. [2023-12-16 06:01:17,700 INFO L78 Accepts]: Start accepts. Automaton has 126470 states and 190791 transitions. Word has length 99 [2023-12-16 06:01:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:17,701 INFO L495 AbstractCegarLoop]: Abstraction has 126470 states and 190791 transitions. [2023-12-16 06:01:17,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 06:01:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 126470 states and 190791 transitions. [2023-12-16 06:01:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:17,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:17,710 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] [2023-12-16 06:01:17,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:01:17,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:17,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash 782589003, now seen corresponding path program 1 times [2023-12-16 06:01:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130187118] [2023-12-16 06:01:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130187118] [2023-12-16 06:01:17,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130187118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:17,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:17,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828654833] [2023-12-16 06:01:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:17,766 INFO L87 Difference]: Start difference. First operand 126470 states and 190791 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:21,479 INFO L93 Difference]: Finished difference Result 377614 states and 569134 transitions. [2023-12-16 06:01:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:22,262 INFO L225 Difference]: With dead ends: 377614 [2023-12-16 06:01:22,262 INFO L226 Difference]: Without dead ends: 251544 [2023-12-16 06:01:22,462 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 06:01:22,463 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 129 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:22,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251544 states. [2023-12-16 06:01:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251544 to 251542. [2023-12-16 06:01:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251542 states, 251541 states have (on average 1.492559861016693) internal successors, (375440), 251541 states have internal predecessors, (375440), 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 06:01:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251542 states to 251542 states and 375440 transitions. [2023-12-16 06:01:28,734 INFO L78 Accepts]: Start accepts. Automaton has 251542 states and 375440 transitions. Word has length 99 [2023-12-16 06:01:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:28,734 INFO L495 AbstractCegarLoop]: Abstraction has 251542 states and 375440 transitions. [2023-12-16 06:01:28,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 251542 states and 375440 transitions. [2023-12-16 06:01:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:28,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:28,750 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] [2023-12-16 06:01:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:01:28,751 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1206235725, now seen corresponding path program 1 times [2023-12-16 06:01:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977695311] [2023-12-16 06:01:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977695311] [2023-12-16 06:01:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977695311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:28,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885091839] [2023-12-16 06:01:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:28,801 INFO L87 Difference]: Start difference. First operand 251542 states and 375440 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:32,527 INFO L93 Difference]: Finished difference Result 377990 states and 562842 transitions. [2023-12-16 06:01:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:33,122 INFO L225 Difference]: With dead ends: 377990 [2023-12-16 06:01:33,122 INFO L226 Difference]: Without dead ends: 251888 [2023-12-16 06:01:33,256 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 06:01:33,256 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 100 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251888 states. [2023-12-16 06:01:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251888 to 251886. [2023-12-16 06:01:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251886 states, 251885 states have (on average 1.4786589118049904) internal successors, (372452), 251885 states have internal predecessors, (372452), 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 06:01:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251886 states to 251886 states and 372452 transitions. [2023-12-16 06:01:39,636 INFO L78 Accepts]: Start accepts. Automaton has 251886 states and 372452 transitions. Word has length 99 [2023-12-16 06:01:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:39,636 INFO L495 AbstractCegarLoop]: Abstraction has 251886 states and 372452 transitions. [2023-12-16 06:01:39,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 251886 states and 372452 transitions. [2023-12-16 06:01:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:39,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:39,651 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] [2023-12-16 06:01:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:01:39,651 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 195118475, now seen corresponding path program 1 times [2023-12-16 06:01:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146233499] [2023-12-16 06:01:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:01:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:39,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146233499] [2023-12-16 06:01:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146233499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:39,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:01:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374837299] [2023-12-16 06:01:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:39,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:01:39,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:01:39,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:01:39,699 INFO L87 Difference]: Start difference. First operand 251886 states and 372452 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:43,326 INFO L93 Difference]: Finished difference Result 378534 states and 558401 transitions. [2023-12-16 06:01:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:01:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:44,061 INFO L225 Difference]: With dead ends: 378534 [2023-12-16 06:01:44,062 INFO L226 Difference]: Without dead ends: 252464 [2023-12-16 06:01:44,213 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 06:01:44,214 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:01:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252464 states. [2023-12-16 06:01:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252464 to 252462. [2023-12-16 06:01:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252462 states, 252461 states have (on average 1.4645232332914786) internal successors, (369735), 252461 states have internal predecessors, (369735), 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 06:01:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252462 states to 252462 states and 369735 transitions. [2023-12-16 06:01:50,056 INFO L78 Accepts]: Start accepts. Automaton has 252462 states and 369735 transitions. Word has length 99 [2023-12-16 06:01:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:01:50,056 INFO L495 AbstractCegarLoop]: Abstraction has 252462 states and 369735 transitions. [2023-12-16 06:01:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:01:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 252462 states and 369735 transitions. [2023-12-16 06:01:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 06:01:50,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:01:50,071 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 06:01:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:01:50,072 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:01:50,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:01:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -614228151, now seen corresponding path program 1 times [2023-12-16 06:01:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:01:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669632005] [2023-12-16 06:01:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:01:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:01:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:01:50,182 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 06:01:50,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:01:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669632005] [2023-12-16 06:01:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669632005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:01:50,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:01:50,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:01:50,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426796754] [2023-12-16 06:01:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:01:50,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:01:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:01:50,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:01:50,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:01:50,184 INFO L87 Difference]: Start difference. First operand 252462 states and 369735 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 06:01:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:01:57,468 INFO L93 Difference]: Finished difference Result 623062 states and 919019 transitions. [2023-12-16 06:01:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:01:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 06:01:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:01:58,716 INFO L225 Difference]: With dead ends: 623062 [2023-12-16 06:01:58,716 INFO L226 Difference]: Without dead ends: 499540 [2023-12-16 06:01:58,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:01:58,986 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 346 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:01:58,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 661 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:01:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499540 states. Received shutdown request... [2023-12-16 06:02:00,570 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:02:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:02:00,570 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 06:02:00,574 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] [2023-12-16 06:02:00,576 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:02:00,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:02:00 BoogieIcfgContainer [2023-12-16 06:02:00,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:02:00,578 INFO L158 Benchmark]: Toolchain (without parser) took 58972.39ms. Allocated memory was 295.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 242.1MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.25ms. Allocated memory is still 295.7MB. Free memory was 242.1MB in the beginning and 225.2MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.45ms. Allocated memory is still 295.7MB. Free memory was 225.2MB in the beginning and 222.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: Boogie Preprocessor took 58.26ms. Allocated memory is still 295.7MB. Free memory was 222.0MB in the beginning and 218.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: RCFGBuilder took 604.12ms. Allocated memory is still 295.7MB. Free memory was 218.0MB in the beginning and 251.0MB in the end (delta: -33.0MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. [2023-12-16 06:02:00,578 INFO L158 Benchmark]: TraceAbstraction took 57939.24ms. Allocated memory was 295.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 250.5MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2023-12-16 06:02:00,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 305.25ms. Allocated memory is still 295.7MB. Free memory was 242.1MB in the beginning and 225.2MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.45ms. Allocated memory is still 295.7MB. Free memory was 225.2MB in the beginning and 222.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.26ms. Allocated memory is still 295.7MB. Free memory was 222.0MB in the beginning and 218.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 604.12ms. Allocated memory is still 295.7MB. Free memory was 218.0MB in the beginning and 251.0MB in the end (delta: -33.0MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. * TraceAbstraction took 57939.24ms. Allocated memory was 295.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 250.5MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 4.0GB. 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: 558]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 558). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.9s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3070 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3070 mSDsluCounter, 10342 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5713 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 661 IncrementalHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 4629 mSDtfsCounter, 661 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252462occurred in iteration=21, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 27.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 9190 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1629 NumberOfCodeBlocks, 1629 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1607 ConstructedInterpolants, 0 QuantifiedInterpolants, 4924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 114/114 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 [2023-12-16 06:02:00,619 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 06:02:00,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-16 06:02:00.815 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0888ebc64/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0888ebc64/.metadata/.log.