/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:38:36,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:38:36,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:38:36,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:38:36,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:38:36,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:38:36,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:38:36,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:38:36,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:38:36,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:38:36,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:38:36,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:38:36,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:38:36,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:38:36,975 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:38:36,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:38:36,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:38:36,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:38:36,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:38:36,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:38:36,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:38:36,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:38:36,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:38:36,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:38:36,982 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:38:36,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:38:36,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:38:36,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:38:36,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:38:36,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:38:36,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:38:36,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:38:36,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:38:36,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:38:36,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:38:36,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:38:36,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:38:36,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:38:36,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:38:36,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:38:36,986 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:38:36,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:38:36,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:38:36,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:38:37,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:38:37,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:38:37,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:38:37,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:38:37,254 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:38:37,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2023-12-21 11:38:38,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:38:38,602 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:38:38,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2023-12-21 11:38:38,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a38ec22/77bc167458264312af9e1960fb75d497/FLAGd1975f2ca [2023-12-21 11:38:38,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75a38ec22/77bc167458264312af9e1960fb75d497 [2023-12-21 11:38:38,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:38:38,625 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:38:38,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:38:38,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:38:38,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:38:38,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:38,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7559de71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38, skipping insertion in model container [2023-12-21 11:38:38,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:38,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:38:38,852 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2023-12-21 11:38:38,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:38:38,865 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:38:38,922 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2023-12-21 11:38:38,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:38:38,953 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:38:38,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38 WrapperNode [2023-12-21 11:38:38,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:38:38,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:38:38,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:38:38,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:38:38,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:38,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,028 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 373 [2023-12-21 11:38:39,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:38:39,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:38:39,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:38:39,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:38:39,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,057 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]. [2023-12-21 11:38:39,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:38:39,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:38:39,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:38:39,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:38:39,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (1/1) ... [2023-12-21 11:38:39,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:38:39,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:39,157 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) [2023-12-21 11:38:39,185 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 [2023-12-21 11:38:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:38:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:38:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:38:39,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:38:39,308 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:38:39,310 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:38:39,762 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:38:39,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:38:39,808 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:38:39,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:38:39 BoogieIcfgContainer [2023-12-21 11:38:39,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:38:39,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:38:39,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:38:39,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:38:39,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:38:38" (1/3) ... [2023-12-21 11:38:39,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a73c0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:38:39, skipping insertion in model container [2023-12-21 11:38:39,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:38:38" (2/3) ... [2023-12-21 11:38:39,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a73c0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:38:39, skipping insertion in model container [2023-12-21 11:38:39,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:38:39" (3/3) ... [2023-12-21 11:38:39,817 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2023-12-21 11:38:39,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:38:39,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:38:39,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:38:39,877 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;@6d310125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:38:39,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:38:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 95 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 11:38:39,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:39,888 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] [2023-12-21 11:38:39,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1951345530, now seen corresponding path program 1 times [2023-12-21 11:38:39,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:39,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634816893] [2023-12-21 11:38:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634816893] [2023-12-21 11:38:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634816893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:38:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322731410] [2023-12-21 11:38:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:38:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:38:40,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:38:40,139 INFO L87 Difference]: Start difference. First operand has 96 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 95 states have internal predecessors, (168), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:40,190 INFO L93 Difference]: Finished difference Result 157 states and 268 transitions. [2023-12-21 11:38:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:38:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-21 11:38:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:40,202 INFO L225 Difference]: With dead ends: 157 [2023-12-21 11:38:40,202 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 11:38:40,205 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 [2023-12-21 11:38:40,210 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:40,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 11:38:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-21 11:38:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.7526881720430108) internal successors, (163), 93 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 163 transitions. [2023-12-21 11:38:40,254 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 163 transitions. Word has length 30 [2023-12-21 11:38:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:40,255 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 163 transitions. [2023-12-21 11:38:40,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 163 transitions. [2023-12-21 11:38:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 11:38:40,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:40,260 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] [2023-12-21 11:38:40,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:38:40,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:40,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -28117496, now seen corresponding path program 1 times [2023-12-21 11:38:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153386547] [2023-12-21 11:38:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:40,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:40,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153386547] [2023-12-21 11:38:40,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153386547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:40,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:40,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:38:40,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218597416] [2023-12-21 11:38:40,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:40,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:38:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:40,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:38:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:38:40,491 INFO L87 Difference]: Start difference. First operand 94 states and 163 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:40,561 INFO L93 Difference]: Finished difference Result 155 states and 261 transitions. [2023-12-21 11:38:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:38:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-21 11:38:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:40,565 INFO L225 Difference]: With dead ends: 155 [2023-12-21 11:38:40,565 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 11:38:40,566 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 [2023-12-21 11:38:40,567 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:40,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 11:38:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-21 11:38:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2023-12-21 11:38:40,574 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 30 [2023-12-21 11:38:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:40,574 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2023-12-21 11:38:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2023-12-21 11:38:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:38:40,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:40,578 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] [2023-12-21 11:38:40,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:38:40,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:40,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1457306719, now seen corresponding path program 1 times [2023-12-21 11:38:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100742579] [2023-12-21 11:38:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:40,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:40,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100742579] [2023-12-21 11:38:40,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100742579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:40,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371862235] [2023-12-21 11:38:40,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:40,727 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:40,764 INFO L93 Difference]: Finished difference Result 202 states and 307 transitions. [2023-12-21 11:38:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:40,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 11:38:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:40,767 INFO L225 Difference]: With dead ends: 202 [2023-12-21 11:38:40,767 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 11:38:40,767 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 [2023-12-21 11:38:40,768 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 67 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 245 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 [2023-12-21 11:38:40,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 11:38:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-12-21 11:38:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4893617021276595) internal successors, (210), 141 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 210 transitions. [2023-12-21 11:38:40,784 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 210 transitions. Word has length 61 [2023-12-21 11:38:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:40,785 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 210 transitions. [2023-12-21 11:38:40,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 210 transitions. [2023-12-21 11:38:40,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:38:40,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:40,788 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] [2023-12-21 11:38:40,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:38:40,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:40,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1844101758, now seen corresponding path program 1 times [2023-12-21 11:38:40,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:40,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187335793] [2023-12-21 11:38:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:40,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187335793] [2023-12-21 11:38:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187335793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252920264] [2023-12-21 11:38:41,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:41,023 INFO L87 Difference]: Start difference. First operand 142 states and 210 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,174 INFO L93 Difference]: Finished difference Result 778 states and 1254 transitions. [2023-12-21 11:38:41,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:41,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 11:38:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,179 INFO L225 Difference]: With dead ends: 778 [2023-12-21 11:38:41,179 INFO L226 Difference]: Without dead ends: 672 [2023-12-21 11:38:41,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:41,187 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1100 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:41,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 833 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-21 11:38:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 246. [2023-12-21 11:38:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.546938775510204) internal successors, (379), 245 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 379 transitions. [2023-12-21 11:38:41,211 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 379 transitions. Word has length 61 [2023-12-21 11:38:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,212 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 379 transitions. [2023-12-21 11:38:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 379 transitions. [2023-12-21 11:38:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:38:41,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,213 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] [2023-12-21 11:38:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:38:41,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1319520051, now seen corresponding path program 1 times [2023-12-21 11:38:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492666236] [2023-12-21 11:38:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:41,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492666236] [2023-12-21 11:38:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492666236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:38:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190024094] [2023-12-21 11:38:41,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:38:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:38:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:38:41,508 INFO L87 Difference]: Start difference. First operand 246 states and 379 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-21 11:38:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,537 INFO L93 Difference]: Finished difference Result 260 states and 396 transitions. [2023-12-21 11:38:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:38:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 [2023-12-21 11:38:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,540 INFO L225 Difference]: With dead ends: 260 [2023-12-21 11:38:41,540 INFO L226 Difference]: Without dead ends: 258 [2023-12-21 11:38:41,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:38:41,545 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 2 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:41,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 621 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-21 11:38:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2023-12-21 11:38:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5296442687747036) internal successors, (387), 253 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 387 transitions. [2023-12-21 11:38:41,565 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 387 transitions. Word has length 62 [2023-12-21 11:38:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,572 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 387 transitions. [2023-12-21 11:38:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-21 11:38:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 387 transitions. [2023-12-21 11:38:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:38:41,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,577 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] [2023-12-21 11:38:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:38:41,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2043549626, now seen corresponding path program 1 times [2023-12-21 11:38:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117000761] [2023-12-21 11:38:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:41,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117000761] [2023-12-21 11:38:41,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117000761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961663780] [2023-12-21 11:38:41,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:41,688 INFO L87 Difference]: Start difference. First operand 254 states and 387 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,711 INFO L93 Difference]: Finished difference Result 662 states and 1041 transitions. [2023-12-21 11:38:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 11:38:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,714 INFO L225 Difference]: With dead ends: 662 [2023-12-21 11:38:41,714 INFO L226 Difference]: Without dead ends: 444 [2023-12-21 11:38:41,716 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 [2023-12-21 11:38:41,717 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:41,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-21 11:38:41,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2023-12-21 11:38:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.5532879818594105) internal successors, (685), 441 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 685 transitions. [2023-12-21 11:38:41,740 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 685 transitions. Word has length 63 [2023-12-21 11:38:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 685 transitions. [2023-12-21 11:38:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 685 transitions. [2023-12-21 11:38:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:38:41,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,743 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] [2023-12-21 11:38:41,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:38:41,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -591440318, now seen corresponding path program 1 times [2023-12-21 11:38:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248173946] [2023-12-21 11:38:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:41,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248173946] [2023-12-21 11:38:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248173946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:41,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490971480] [2023-12-21 11:38:41,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:41,805 INFO L87 Difference]: Start difference. First operand 442 states and 685 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,830 INFO L93 Difference]: Finished difference Result 852 states and 1342 transitions. [2023-12-21 11:38:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 11:38:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,834 INFO L225 Difference]: With dead ends: 852 [2023-12-21 11:38:41,834 INFO L226 Difference]: Without dead ends: 634 [2023-12-21 11:38:41,835 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 [2023-12-21 11:38:41,835 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 83 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 296 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 [2023-12-21 11:38:41,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 296 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-21 11:38:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 632. [2023-12-21 11:38:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.561014263074485) internal successors, (985), 631 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 985 transitions. [2023-12-21 11:38:41,854 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 985 transitions. Word has length 63 [2023-12-21 11:38:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,855 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 985 transitions. [2023-12-21 11:38:41,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 985 transitions. [2023-12-21 11:38:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:41,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,857 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] [2023-12-21 11:38:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:38:41,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 566689562, now seen corresponding path program 1 times [2023-12-21 11:38:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378777436] [2023-12-21 11:38:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378777436] [2023-12-21 11:38:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378777436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242964400] [2023-12-21 11:38:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:41,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:41,919 INFO L87 Difference]: Start difference. First operand 632 states and 985 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) [2023-12-21 11:38:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:41,956 INFO L93 Difference]: Finished difference Result 1724 states and 2711 transitions. [2023-12-21 11:38:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:41,956 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 [2023-12-21 11:38:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:41,960 INFO L225 Difference]: With dead ends: 1724 [2023-12-21 11:38:41,960 INFO L226 Difference]: Without dead ends: 1130 [2023-12-21 11:38:41,961 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 [2023-12-21 11:38:41,962 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 71 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 268 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 [2023-12-21 11:38:41,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2023-12-21 11:38:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1128. [2023-12-21 11:38:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 1.5536823425022184) internal successors, (1751), 1127 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1751 transitions. [2023-12-21 11:38:41,993 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1751 transitions. Word has length 64 [2023-12-21 11:38:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:41,993 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1751 transitions. [2023-12-21 11:38:41,993 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) [2023-12-21 11:38:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1751 transitions. [2023-12-21 11:38:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:41,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:41,994 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] [2023-12-21 11:38:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:38:41,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:41,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 384362554, now seen corresponding path program 1 times [2023-12-21 11:38:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678022930] [2023-12-21 11:38:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:42,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678022930] [2023-12-21 11:38:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678022930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:42,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:42,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744422829] [2023-12-21 11:38:42,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:42,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:42,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,058 INFO L87 Difference]: Start difference. First operand 1128 states and 1751 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) [2023-12-21 11:38:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:42,113 INFO L93 Difference]: Finished difference Result 3116 states and 4841 transitions. [2023-12-21 11:38:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:42,113 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 [2023-12-21 11:38:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:42,121 INFO L225 Difference]: With dead ends: 3116 [2023-12-21 11:38:42,122 INFO L226 Difference]: Without dead ends: 2026 [2023-12-21 11:38:42,125 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 [2023-12-21 11:38:42,126 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 75 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 281 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 [2023-12-21 11:38:42,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 281 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-12-21 11:38:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2024. [2023-12-21 11:38:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 1.5338606030647552) internal successors, (3103), 2023 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3103 transitions. [2023-12-21 11:38:42,209 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3103 transitions. Word has length 64 [2023-12-21 11:38:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:42,209 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 3103 transitions. [2023-12-21 11:38:42,209 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) [2023-12-21 11:38:42,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3103 transitions. [2023-12-21 11:38:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:38:42,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:42,210 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] [2023-12-21 11:38:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:38:42,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1756447066, now seen corresponding path program 1 times [2023-12-21 11:38:42,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:42,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022058100] [2023-12-21 11:38:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022058100] [2023-12-21 11:38:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022058100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79459340] [2023-12-21 11:38:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,263 INFO L87 Difference]: Start difference. First operand 2024 states and 3103 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) [2023-12-21 11:38:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:42,350 INFO L93 Difference]: Finished difference Result 5612 states and 8561 transitions. [2023-12-21 11:38:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:42,351 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 [2023-12-21 11:38:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:42,362 INFO L225 Difference]: With dead ends: 5612 [2023-12-21 11:38:42,363 INFO L226 Difference]: Without dead ends: 3626 [2023-12-21 11:38:42,367 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 [2023-12-21 11:38:42,367 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 79 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 294 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 [2023-12-21 11:38:42,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 294 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2023-12-21 11:38:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3624. [2023-12-21 11:38:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.5034501794093293) internal successors, (5447), 3623 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5447 transitions. [2023-12-21 11:38:42,487 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5447 transitions. Word has length 64 [2023-12-21 11:38:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:42,488 INFO L495 AbstractCegarLoop]: Abstraction has 3624 states and 5447 transitions. [2023-12-21 11:38:42,488 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) [2023-12-21 11:38:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5447 transitions. [2023-12-21 11:38:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:38:42,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:42,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:38:42,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1501412735, now seen corresponding path program 1 times [2023-12-21 11:38:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555349431] [2023-12-21 11:38:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:42,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555349431] [2023-12-21 11:38:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555349431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:42,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:42,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:42,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156172906] [2023-12-21 11:38:42,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:42,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:42,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:42,613 INFO L87 Difference]: Start difference. First operand 3624 states and 5447 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:42,738 INFO L93 Difference]: Finished difference Result 7212 states and 10857 transitions. [2023-12-21 11:38:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:42,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 11:38:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:42,752 INFO L225 Difference]: With dead ends: 7212 [2023-12-21 11:38:42,752 INFO L226 Difference]: Without dead ends: 3626 [2023-12-21 11:38:42,756 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 [2023-12-21 11:38:42,756 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 65 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:42,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 284 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2023-12-21 11:38:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3624. [2023-12-21 11:38:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.4902014904775047) internal successors, (5399), 3623 states have internal predecessors, (5399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5399 transitions. [2023-12-21 11:38:42,883 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5399 transitions. Word has length 89 [2023-12-21 11:38:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:42,884 INFO L495 AbstractCegarLoop]: Abstraction has 3624 states and 5399 transitions. [2023-12-21 11:38:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5399 transitions. [2023-12-21 11:38:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:38:42,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:42,887 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] [2023-12-21 11:38:42,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:38:42,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:42,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash -102441310, now seen corresponding path program 1 times [2023-12-21 11:38:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244323794] [2023-12-21 11:38:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244323794] [2023-12-21 11:38:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244323794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584766603] [2023-12-21 11:38:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:43,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:43,002 INFO L87 Difference]: Start difference. First operand 3624 states and 5399 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:43,057 INFO L93 Difference]: Finished difference Result 5420 states and 8081 transitions. [2023-12-21 11:38:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 11:38:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:43,064 INFO L225 Difference]: With dead ends: 5420 [2023-12-21 11:38:43,064 INFO L226 Difference]: Without dead ends: 1834 [2023-12-21 11:38:43,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:43,068 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:43,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 265 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2023-12-21 11:38:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1832. [2023-12-21 11:38:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.4718732932823593) internal successors, (2695), 1831 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2695 transitions. [2023-12-21 11:38:43,128 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2695 transitions. Word has length 89 [2023-12-21 11:38:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:43,128 INFO L495 AbstractCegarLoop]: Abstraction has 1832 states and 2695 transitions. [2023-12-21 11:38:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2695 transitions. [2023-12-21 11:38:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:38:43,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:43,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:38:43,130 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:43,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2020913987, now seen corresponding path program 1 times [2023-12-21 11:38:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118381988] [2023-12-21 11:38:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118381988] [2023-12-21 11:38:43,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118381988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:43,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:43,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566412323] [2023-12-21 11:38:43,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:43,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:43,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:43,256 INFO L87 Difference]: Start difference. First operand 1832 states and 2695 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:43,290 INFO L93 Difference]: Finished difference Result 2732 states and 4025 transitions. [2023-12-21 11:38:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 11:38:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:43,294 INFO L225 Difference]: With dead ends: 2732 [2023-12-21 11:38:43,294 INFO L226 Difference]: Without dead ends: 938 [2023-12-21 11:38:43,296 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 [2023-12-21 11:38:43,296 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 53 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:43,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 246 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-21 11:38:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-21 11:38:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 1.4491978609625669) internal successors, (1355), 935 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1355 transitions. [2023-12-21 11:38:43,326 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1355 transitions. Word has length 89 [2023-12-21 11:38:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:43,327 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1355 transitions. [2023-12-21 11:38:43,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1355 transitions. [2023-12-21 11:38:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:38:43,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:43,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:38:43,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:43,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1767767964, now seen corresponding path program 1 times [2023-12-21 11:38:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658802872] [2023-12-21 11:38:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:44,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:44,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658802872] [2023-12-21 11:38:44,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658802872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:38:44,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193592336] [2023-12-21 11:38:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:44,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:38:44,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:44,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:38:44,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:38:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:44,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:38:44,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:38:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:45,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:38:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:45,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193592336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:38:45,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:38:45,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-12-21 11:38:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231753709] [2023-12-21 11:38:45,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:38:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:38:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:38:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:38:45,476 INFO L87 Difference]: Start difference. First operand 936 states and 1355 transitions. Second operand has 21 states, 21 states have (on average 12.19047619047619) internal successors, (256), 21 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:49,091 INFO L93 Difference]: Finished difference Result 6628 states and 9603 transitions. [2023-12-21 11:38:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 11:38:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.19047619047619) internal successors, (256), 21 states have internal predecessors, (256), 0 states have call successors, (0), 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 89 [2023-12-21 11:38:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:49,109 INFO L225 Difference]: With dead ends: 6628 [2023-12-21 11:38:49,109 INFO L226 Difference]: Without dead ends: 6010 [2023-12-21 11:38:49,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1140, Invalid=5340, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 11:38:49,113 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3937 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:49,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3937 Valid, 1346 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:38:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2023-12-21 11:38:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 4462. [2023-12-21 11:38:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 1.4550549204214303) internal successors, (6491), 4461 states have internal predecessors, (6491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6491 transitions. [2023-12-21 11:38:49,256 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6491 transitions. Word has length 89 [2023-12-21 11:38:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:49,257 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6491 transitions. [2023-12-21 11:38:49,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.19047619047619) internal successors, (256), 21 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6491 transitions. [2023-12-21 11:38:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:49,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:49,259 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] [2023-12-21 11:38:49,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:38:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 11:38:49,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1158229345, now seen corresponding path program 1 times [2023-12-21 11:38:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743895946] [2023-12-21 11:38:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:38:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743895946] [2023-12-21 11:38:49,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743895946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:49,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175887899] [2023-12-21 11:38:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:49,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:49,640 INFO L87 Difference]: Start difference. First operand 4462 states and 6491 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:49,904 INFO L93 Difference]: Finished difference Result 15374 states and 22544 transitions. [2023-12-21 11:38:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2023-12-21 11:38:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:49,951 INFO L225 Difference]: With dead ends: 15374 [2023-12-21 11:38:49,951 INFO L226 Difference]: Without dead ends: 13101 [2023-12-21 11:38:49,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:49,960 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 817 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:49,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 886 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13101 states. [2023-12-21 11:38:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13101 to 6647. [2023-12-21 11:38:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6647 states, 6646 states have (on average 1.4517002708396027) internal successors, (9648), 6646 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 9648 transitions. [2023-12-21 11:38:50,212 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 9648 transitions. Word has length 90 [2023-12-21 11:38:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:50,212 INFO L495 AbstractCegarLoop]: Abstraction has 6647 states and 9648 transitions. [2023-12-21 11:38:50,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 9648 transitions. [2023-12-21 11:38:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:50,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:50,215 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] [2023-12-21 11:38:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:38:50,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:50,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:50,215 INFO L85 PathProgramCache]: Analyzing trace with hash -827748965, now seen corresponding path program 1 times [2023-12-21 11:38:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334689657] [2023-12-21 11:38:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:38:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334689657] [2023-12-21 11:38:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334689657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:50,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:50,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583195032] [2023-12-21 11:38:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:50,340 INFO L87 Difference]: Start difference. First operand 6647 states and 9648 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:50,675 INFO L93 Difference]: Finished difference Result 17559 states and 25701 transitions. [2023-12-21 11:38:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2023-12-21 11:38:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:50,703 INFO L225 Difference]: With dead ends: 17559 [2023-12-21 11:38:50,703 INFO L226 Difference]: Without dead ends: 15286 [2023-12-21 11:38:50,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:50,709 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 910 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:50,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 890 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15286 states. [2023-12-21 11:38:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15286 to 8832. [2023-12-21 11:38:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8832 states, 8831 states have (on average 1.4500056618729475) internal successors, (12805), 8831 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8832 states to 8832 states and 12805 transitions. [2023-12-21 11:38:51,027 INFO L78 Accepts]: Start accepts. Automaton has 8832 states and 12805 transitions. Word has length 90 [2023-12-21 11:38:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:51,028 INFO L495 AbstractCegarLoop]: Abstraction has 8832 states and 12805 transitions. [2023-12-21 11:38:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8832 states and 12805 transitions. [2023-12-21 11:38:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:51,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:51,029 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] [2023-12-21 11:38:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:38:51,030 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:51,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1452248679, now seen corresponding path program 1 times [2023-12-21 11:38:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927509282] [2023-12-21 11:38:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:38:51,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927509282] [2023-12-21 11:38:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927509282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:51,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859605595] [2023-12-21 11:38:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:51,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:51,157 INFO L87 Difference]: Start difference. First operand 8832 states and 12805 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:51,581 INFO L93 Difference]: Finished difference Result 19744 states and 28858 transitions. [2023-12-21 11:38:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-21 11:38:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:51,612 INFO L225 Difference]: With dead ends: 19744 [2023-12-21 11:38:51,612 INFO L226 Difference]: Without dead ends: 17471 [2023-12-21 11:38:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:51,620 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 823 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:51,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 911 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17471 states. [2023-12-21 11:38:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17471 to 11017. [2023-12-21 11:38:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 1.4489832970225127) internal successors, (15962), 11016 states have internal predecessors, (15962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 15962 transitions. [2023-12-21 11:38:52,047 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 15962 transitions. Word has length 90 [2023-12-21 11:38:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:52,047 INFO L495 AbstractCegarLoop]: Abstraction has 11017 states and 15962 transitions. [2023-12-21 11:38:52,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 15962 transitions. [2023-12-21 11:38:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:52,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:52,049 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] [2023-12-21 11:38:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:38:52,049 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:52,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash 974182557, now seen corresponding path program 1 times [2023-12-21 11:38:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630786373] [2023-12-21 11:38:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:38:52,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630786373] [2023-12-21 11:38:52,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630786373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:52,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:52,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806893949] [2023-12-21 11:38:52,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:52,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:52,172 INFO L87 Difference]: Start difference. First operand 11017 states and 15962 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:52,647 INFO L93 Difference]: Finished difference Result 21929 states and 32015 transitions. [2023-12-21 11:38:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 90 [2023-12-21 11:38:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:52,687 INFO L225 Difference]: With dead ends: 21929 [2023-12-21 11:38:52,687 INFO L226 Difference]: Without dead ends: 19656 [2023-12-21 11:38:52,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:52,692 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 745 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1086 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19656 states. [2023-12-21 11:38:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19656 to 13202. [2023-12-21 11:38:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13202 states, 13201 states have (on average 1.448299371259753) internal successors, (19119), 13201 states have internal predecessors, (19119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13202 states to 13202 states and 19119 transitions. [2023-12-21 11:38:53,166 INFO L78 Accepts]: Start accepts. Automaton has 13202 states and 19119 transitions. Word has length 90 [2023-12-21 11:38:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:53,167 INFO L495 AbstractCegarLoop]: Abstraction has 13202 states and 19119 transitions. [2023-12-21 11:38:53,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 13202 states and 19119 transitions. [2023-12-21 11:38:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:38:53,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:53,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:38:53,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:53,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2133375712, now seen corresponding path program 1 times [2023-12-21 11:38:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097328519] [2023-12-21 11:38:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:38:53,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097328519] [2023-12-21 11:38:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097328519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:53,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:53,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:38:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143366370] [2023-12-21 11:38:53,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:38:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:38:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:38:53,290 INFO L87 Difference]: Start difference. First operand 13202 states and 19119 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:53,834 INFO L93 Difference]: Finished difference Result 23154 states and 33743 transitions. [2023-12-21 11:38:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:38:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 90 [2023-12-21 11:38:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:53,877 INFO L225 Difference]: With dead ends: 23154 [2023-12-21 11:38:53,877 INFO L226 Difference]: Without dead ends: 21490 [2023-12-21 11:38:53,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:38:53,884 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 819 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:53,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1084 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:38:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21490 states. [2023-12-21 11:38:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21490 to 15036. [2023-12-21 11:38:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15036 states, 15035 states have (on average 1.4471566345194546) internal successors, (21758), 15035 states have internal predecessors, (21758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15036 states to 15036 states and 21758 transitions. [2023-12-21 11:38:54,469 INFO L78 Accepts]: Start accepts. Automaton has 15036 states and 21758 transitions. Word has length 90 [2023-12-21 11:38:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:54,469 INFO L495 AbstractCegarLoop]: Abstraction has 15036 states and 21758 transitions. [2023-12-21 11:38:54,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 15036 states and 21758 transitions. [2023-12-21 11:38:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:38:54,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:54,472 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] [2023-12-21 11:38:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:38:54,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:54,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1526719420, now seen corresponding path program 1 times [2023-12-21 11:38:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844435536] [2023-12-21 11:38:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:54,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:54,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844435536] [2023-12-21 11:38:54,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844435536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:54,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:54,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:54,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942162161] [2023-12-21 11:38:54,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:54,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:54,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:54,568 INFO L87 Difference]: Start difference. First operand 15036 states and 21758 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:54,785 INFO L93 Difference]: Finished difference Result 21233 states and 30626 transitions. [2023-12-21 11:38:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:54,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:38:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:54,795 INFO L225 Difference]: With dead ends: 21233 [2023-12-21 11:38:54,796 INFO L226 Difference]: Without dead ends: 6235 [2023-12-21 11:38:54,808 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 [2023-12-21 11:38:54,810 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 37 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:54,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2023-12-21 11:38:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 6058. [2023-12-21 11:38:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 6057 states have (on average 1.4231467723295361) internal successors, (8620), 6057 states have internal predecessors, (8620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 8620 transitions. [2023-12-21 11:38:54,973 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 8620 transitions. Word has length 93 [2023-12-21 11:38:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:54,973 INFO L495 AbstractCegarLoop]: Abstraction has 6058 states and 8620 transitions. [2023-12-21 11:38:54,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 8620 transitions. [2023-12-21 11:38:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:38:54,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:54,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:38:54,975 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:54,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1290810145, now seen corresponding path program 1 times [2023-12-21 11:38:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750292033] [2023-12-21 11:38:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750292033] [2023-12-21 11:38:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750292033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:38:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841766209] [2023-12-21 11:38:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:55,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:38:55,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:38:55,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:38:55,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:38:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:55,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 11:38:55,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:38:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:57,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:38:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:38:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841766209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:38:59,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:38:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 14] total 32 [2023-12-21 11:38:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098605578] [2023-12-21 11:38:59,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:38:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:38:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:38:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:38:59,900 INFO L87 Difference]: Start difference. First operand 6058 states and 8620 transitions. Second operand has 33 states, 33 states have (on average 7.96969696969697) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:06,220 INFO L93 Difference]: Finished difference Result 50114 states and 70899 transitions. [2023-12-21 11:39:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 11:39:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.96969696969697) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:39:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:06,296 INFO L225 Difference]: With dead ends: 50114 [2023-12-21 11:39:06,296 INFO L226 Difference]: Without dead ends: 44105 [2023-12-21 11:39:06,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2661, Invalid=10221, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 11:39:06,323 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 7112 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7112 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:06,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7112 Valid, 1614 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:39:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44105 states. [2023-12-21 11:39:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44105 to 34795. [2023-12-21 11:39:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34795 states, 34794 states have (on average 1.4154739322871759) internal successors, (49250), 34794 states have internal predecessors, (49250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34795 states to 34795 states and 49250 transitions. [2023-12-21 11:39:07,402 INFO L78 Accepts]: Start accepts. Automaton has 34795 states and 49250 transitions. Word has length 93 [2023-12-21 11:39:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:07,403 INFO L495 AbstractCegarLoop]: Abstraction has 34795 states and 49250 transitions. [2023-12-21 11:39:07,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.96969696969697) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34795 states and 49250 transitions. [2023-12-21 11:39:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:39:07,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:07,406 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] [2023-12-21 11:39:07,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:39:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-21 11:39:07,612 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:07,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash -573534726, now seen corresponding path program 1 times [2023-12-21 11:39:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572412778] [2023-12-21 11:39:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572412778] [2023-12-21 11:39:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572412778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159024652] [2023-12-21 11:39:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:07,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:07,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:07,687 INFO L87 Difference]: Start difference. First operand 34795 states and 49250 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:08,253 INFO L93 Difference]: Finished difference Result 51988 states and 73562 transitions. [2023-12-21 11:39:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:39:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:08,280 INFO L225 Difference]: With dead ends: 51988 [2023-12-21 11:39:08,281 INFO L226 Difference]: Without dead ends: 19817 [2023-12-21 11:39:08,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:08,306 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 37 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:08,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 213 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19817 states. [2023-12-21 11:39:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19817 to 19815. [2023-12-21 11:39:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19815 states, 19814 states have (on average 1.3907338245684868) internal successors, (27556), 19814 states have internal predecessors, (27556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19815 states to 19815 states and 27556 transitions. [2023-12-21 11:39:08,787 INFO L78 Accepts]: Start accepts. Automaton has 19815 states and 27556 transitions. Word has length 93 [2023-12-21 11:39:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:08,787 INFO L495 AbstractCegarLoop]: Abstraction has 19815 states and 27556 transitions. [2023-12-21 11:39:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 19815 states and 27556 transitions. [2023-12-21 11:39:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:39:08,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:08,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:39:08,791 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:08,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -675124422, now seen corresponding path program 1 times [2023-12-21 11:39:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85029924] [2023-12-21 11:39:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:09,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85029924] [2023-12-21 11:39:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85029924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:39:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65768248] [2023-12-21 11:39:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:09,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:09,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:39:09,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:39:09,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:39:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:10,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:39:10,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:39:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:10,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:39:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65768248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:39:11,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:39:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-21 11:39:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410962440] [2023-12-21 11:39:11,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:39:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:39:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:39:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:39:11,061 INFO L87 Difference]: Start difference. First operand 19815 states and 27556 transitions. Second operand has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:12,377 INFO L93 Difference]: Finished difference Result 73679 states and 101652 transitions. [2023-12-21 11:39:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:39:12,378 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:39:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:12,438 INFO L225 Difference]: With dead ends: 73679 [2023-12-21 11:39:12,438 INFO L226 Difference]: Without dead ends: 54797 [2023-12-21 11:39:12,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 11:39:12,459 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1256 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:12,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 1027 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:39:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54797 states. [2023-12-21 11:39:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54797 to 50300. [2023-12-21 11:39:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50300 states, 50299 states have (on average 1.3681584126921011) internal successors, (68817), 50299 states have internal predecessors, (68817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50300 states to 50300 states and 68817 transitions. [2023-12-21 11:39:14,084 INFO L78 Accepts]: Start accepts. Automaton has 50300 states and 68817 transitions. Word has length 93 [2023-12-21 11:39:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:14,085 INFO L495 AbstractCegarLoop]: Abstraction has 50300 states and 68817 transitions. [2023-12-21 11:39:14,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 50300 states and 68817 transitions. [2023-12-21 11:39:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:39:14,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:14,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:14,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:39:14,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:14,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:14,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 711660988, now seen corresponding path program 1 times [2023-12-21 11:39:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159716759] [2023-12-21 11:39:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159716759] [2023-12-21 11:39:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159716759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:39:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530691341] [2023-12-21 11:39:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:15,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:39:15,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:39:15,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:39:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:15,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:39:15,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:39:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:15,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:39:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530691341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:39:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:39:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-21 11:39:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277499953] [2023-12-21 11:39:16,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:39:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:39:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:39:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:39:16,406 INFO L87 Difference]: Start difference. First operand 50300 states and 68817 transitions. Second operand has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:19,204 INFO L93 Difference]: Finished difference Result 203131 states and 275345 transitions. [2023-12-21 11:39:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:39:19,205 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 11:39:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:19,376 INFO L225 Difference]: With dead ends: 203131 [2023-12-21 11:39:19,376 INFO L226 Difference]: Without dead ends: 160373 [2023-12-21 11:39:19,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 11:39:19,426 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1548 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:19,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 808 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:39:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160373 states. [2023-12-21 11:39:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160373 to 134549. [2023-12-21 11:39:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134549 states, 134548 states have (on average 1.3524541427594614) internal successors, (181970), 134548 states have internal predecessors, (181970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134549 states to 134549 states and 181970 transitions. [2023-12-21 11:39:23,543 INFO L78 Accepts]: Start accepts. Automaton has 134549 states and 181970 transitions. Word has length 93 [2023-12-21 11:39:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:23,543 INFO L495 AbstractCegarLoop]: Abstraction has 134549 states and 181970 transitions. [2023-12-21 11:39:23,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 134549 states and 181970 transitions. [2023-12-21 11:39:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:39:23,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:23,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:23,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:39:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:39:23,951 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1174038285, now seen corresponding path program 1 times [2023-12-21 11:39:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18196362] [2023-12-21 11:39:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:23,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18196362] [2023-12-21 11:39:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18196362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:23,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:23,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173521540] [2023-12-21 11:39:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:23,995 INFO L87 Difference]: Start difference. First operand 134549 states and 181970 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:27,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:27,888 INFO L93 Difference]: Finished difference Result 321401 states and 433875 transitions. [2023-12-21 11:39:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:27,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:39:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:28,117 INFO L225 Difference]: With dead ends: 321401 [2023-12-21 11:39:28,117 INFO L226 Difference]: Without dead ends: 195983 [2023-12-21 11:39:28,342 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 [2023-12-21 11:39:28,352 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 61 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:28,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 269 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195983 states. [2023-12-21 11:39:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195983 to 179641. [2023-12-21 11:39:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179641 states, 179640 states have (on average 1.3326597639723892) internal successors, (239399), 179640 states have internal predecessors, (239399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179641 states to 179641 states and 239399 transitions. [2023-12-21 11:39:33,491 INFO L78 Accepts]: Start accepts. Automaton has 179641 states and 239399 transitions. Word has length 94 [2023-12-21 11:39:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:33,492 INFO L495 AbstractCegarLoop]: Abstraction has 179641 states and 239399 transitions. [2023-12-21 11:39:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 179641 states and 239399 transitions. [2023-12-21 11:39:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:39:33,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:33,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:39:33,499 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:33,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1235427271, now seen corresponding path program 1 times [2023-12-21 11:39:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190432392] [2023-12-21 11:39:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190432392] [2023-12-21 11:39:33,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190432392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:33,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:33,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292706583] [2023-12-21 11:39:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:33,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:33,544 INFO L87 Difference]: Start difference. First operand 179641 states and 239399 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:39,960 INFO L93 Difference]: Finished difference Result 496350 states and 657661 transitions. [2023-12-21 11:39:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:39:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:40,434 INFO L225 Difference]: With dead ends: 496350 [2023-12-21 11:39:40,434 INFO L226 Difference]: Without dead ends: 322482 [2023-12-21 11:39:40,558 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 [2023-12-21 11:39:40,559 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 58 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:40,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 272 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:39:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322482 states. [2023-12-21 11:39:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322482 to 322480. [2023-12-21 11:39:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322480 states, 322479 states have (on average 1.3038523438735545) internal successors, (420465), 322479 states have internal predecessors, (420465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322480 states to 322480 states and 420465 transitions. [2023-12-21 11:39:50,064 INFO L78 Accepts]: Start accepts. Automaton has 322480 states and 420465 transitions. Word has length 94 [2023-12-21 11:39:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:39:50,068 INFO L495 AbstractCegarLoop]: Abstraction has 322480 states and 420465 transitions. [2023-12-21 11:39:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 322480 states and 420465 transitions. [2023-12-21 11:39:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:39:50,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:39:50,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:39:50,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 11:39:50,082 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:39:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:39:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1068714425, now seen corresponding path program 1 times [2023-12-21 11:39:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:39:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97396281] [2023-12-21 11:39:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:39:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:39:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:39:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:39:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:39:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97396281] [2023-12-21 11:39:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97396281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:39:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:39:50,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:39:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078587709] [2023-12-21 11:39:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:39:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:39:50,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:39:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:39:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:39:50,123 INFO L87 Difference]: Start difference. First operand 322480 states and 420465 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:39:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:39:58,948 INFO L93 Difference]: Finished difference Result 724604 states and 944593 transitions. [2023-12-21 11:39:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:39:58,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:39:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:39:59,665 INFO L225 Difference]: With dead ends: 724604 [2023-12-21 11:39:59,665 INFO L226 Difference]: Without dead ends: 427766 [2023-12-21 11:39:59,826 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 [2023-12-21 11:39:59,830 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:39:59,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 272 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:40:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427766 states. [2023-12-21 11:40:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427766 to 427764. [2023-12-21 11:40:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427764 states, 427763 states have (on average 1.2881899556530134) internal successors, (551040), 427763 states have internal predecessors, (551040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:40:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427764 states to 427764 states and 551040 transitions. [2023-12-21 11:40:12,997 INFO L78 Accepts]: Start accepts. Automaton has 427764 states and 551040 transitions. Word has length 94 [2023-12-21 11:40:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:40:12,998 INFO L495 AbstractCegarLoop]: Abstraction has 427764 states and 551040 transitions. [2023-12-21 11:40:12,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:40:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 427764 states and 551040 transitions. [2023-12-21 11:40:13,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:40:13,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:40:13,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:40:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 11:40:13,011 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:40:13,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:40:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash -535481953, now seen corresponding path program 1 times [2023-12-21 11:40:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:40:13,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375217363] [2023-12-21 11:40:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:40:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:40:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:40:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:40:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:40:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375217363] [2023-12-21 11:40:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375217363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:40:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:40:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:40:13,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451188296] [2023-12-21 11:40:13,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:40:13,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:40:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:40:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:40:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:40:13,051 INFO L87 Difference]: Start difference. First operand 427764 states and 551040 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)