/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:56:36,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:56:36,067 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:56:36,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:56:36,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:56:36,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:56:36,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:56:36,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:56:36,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:56:36,092 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:56:36,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:56:36,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:56:36,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:56:36,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:56:36,094 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:56:36,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:56:36,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:56:36,095 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:56:36,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:56:36,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:56:36,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:56:36,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:56:36,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:56:36,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:56:36,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:56:36,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:56:36,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:56:36,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:56:36,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:56:36,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:56:36,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:56:36,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:56:36,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:56:36,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:56:36,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:56:36,100 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:56:36,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:56:36,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:56:36,101 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:56:36,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:56:36,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:56:36,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:56:36,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:56:36,314 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:56:36,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2023-12-19 01:56:37,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:56:37,899 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:56:37,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label25.c [2023-12-19 01:56:37,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38216b7de/5ab171967f5f4938ad940e4bbe49d8a7/FLAG7ebf6cb26 [2023-12-19 01:56:37,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38216b7de/5ab171967f5f4938ad940e4bbe49d8a7 [2023-12-19 01:56:37,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:56:37,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:56:37,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:56:37,943 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:56:37,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:56:37,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:56:37" (1/1) ... [2023-12-19 01:56:37,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3a4f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:37, skipping insertion in model container [2023-12-19 01:56:37,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:56:37" (1/1) ... [2023-12-19 01:56:38,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:56:38,494 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label25.c[58529,58542] [2023-12-19 01:56:38,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:56:38,547 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:56:38,727 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label25.c[58529,58542] [2023-12-19 01:56:38,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:56:38,753 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:56:38,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38 WrapperNode [2023-12-19 01:56:38,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:56:38,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:56:38,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:56:38,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:56:38,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,858 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-19 01:56:38,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:56:38,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:56:38,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:56:38,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:56:38,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,920 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]. [2023-12-19 01:56:38,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:38,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:39,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:39,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:39,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:56:39,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:56:39,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:56:39,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:56:39,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (1/1) ... [2023-12-19 01:56:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:56:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:39,052 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) [2023-12-19 01:56:39,056 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 [2023-12-19 01:56:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:56:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:56:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:56:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:56:39,143 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:56:39,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:56:40,688 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:56:40,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:56:40,731 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 01:56:40,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:56:40 BoogieIcfgContainer [2023-12-19 01:56:40,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:56:40,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:56:40,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:56:40,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:56:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:56:37" (1/3) ... [2023-12-19 01:56:40,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fefe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:56:40, skipping insertion in model container [2023-12-19 01:56:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:56:38" (2/3) ... [2023-12-19 01:56:40,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fefe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:56:40, skipping insertion in model container [2023-12-19 01:56:40,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:56:40" (3/3) ... [2023-12-19 01:56:40,740 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label25.c [2023-12-19 01:56:40,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:56:40,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 01:56:40,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:56:40,804 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;@54a36ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:56:40,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 01:56:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 01:56:40,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:40,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:40,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:40,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1338073287, now seen corresponding path program 1 times [2023-12-19 01:56:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708169770] [2023-12-19 01:56:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708169770] [2023-12-19 01:56:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708169770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:41,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095842214] [2023-12-19 01:56:41,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:41,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:56:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:41,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:56:41,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:56:41,479 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:41,538 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-19 01:56:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:56:41,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-19 01:56:41,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:41,559 INFO L225 Difference]: With dead ends: 479 [2023-12-19 01:56:41,559 INFO L226 Difference]: Without dead ends: 238 [2023-12-19 01:56:41,563 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 [2023-12-19 01:56:41,567 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:41,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:56:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-19 01:56:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-19 01:56:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-19 01:56:41,630 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 179 [2023-12-19 01:56:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:41,633 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-19 01:56:41,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-19 01:56:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 01:56:41,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:41,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:41,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:56:41,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:41,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash -693337360, now seen corresponding path program 1 times [2023-12-19 01:56:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793995533] [2023-12-19 01:56:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:42,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793995533] [2023-12-19 01:56:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793995533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:42,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:42,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:42,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451689821] [2023-12-19 01:56:42,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:42,338 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:43,238 INFO L93 Difference]: Finished difference Result 693 states and 1149 transitions. [2023-12-19 01:56:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-19 01:56:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:43,242 INFO L225 Difference]: With dead ends: 693 [2023-12-19 01:56:43,242 INFO L226 Difference]: Without dead ends: 456 [2023-12-19 01:56:43,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:43,244 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 71 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:43,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 111 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:56:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-19 01:56:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 450. [2023-12-19 01:56:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.599109131403118) internal successors, (718), 449 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 718 transitions. [2023-12-19 01:56:43,262 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 718 transitions. Word has length 179 [2023-12-19 01:56:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:43,262 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 718 transitions. [2023-12-19 01:56:43,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 718 transitions. [2023-12-19 01:56:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-19 01:56:43,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:43,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:43,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:56:43,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:43,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2052825084, now seen corresponding path program 1 times [2023-12-19 01:56:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755177212] [2023-12-19 01:56:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:43,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:43,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755177212] [2023-12-19 01:56:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755177212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819834565] [2023-12-19 01:56:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:43,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:43,591 INFO L87 Difference]: Start difference. First operand 450 states and 718 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:44,405 INFO L93 Difference]: Finished difference Result 1339 states and 2141 transitions. [2023-12-19 01:56:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-19 01:56:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:44,412 INFO L225 Difference]: With dead ends: 1339 [2023-12-19 01:56:44,413 INFO L226 Difference]: Without dead ends: 890 [2023-12-19 01:56:44,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:44,414 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:44,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 139 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:56:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-19 01:56:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 885. [2023-12-19 01:56:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.579185520361991) internal successors, (1396), 884 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1396 transitions. [2023-12-19 01:56:44,442 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1396 transitions. Word has length 185 [2023-12-19 01:56:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:44,442 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1396 transitions. [2023-12-19 01:56:44,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1396 transitions. [2023-12-19 01:56:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 01:56:44,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:44,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:56:44,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1810003382, now seen corresponding path program 1 times [2023-12-19 01:56:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808024028] [2023-12-19 01:56:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:44,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:44,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808024028] [2023-12-19 01:56:44,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808024028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:44,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:44,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886344873] [2023-12-19 01:56:44,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:44,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:44,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:44,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:44,769 INFO L87 Difference]: Start difference. First operand 885 states and 1396 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:45,640 INFO L93 Difference]: Finished difference Result 2604 states and 4114 transitions. [2023-12-19 01:56:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:45,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-19 01:56:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:45,647 INFO L225 Difference]: With dead ends: 2604 [2023-12-19 01:56:45,647 INFO L226 Difference]: Without dead ends: 1720 [2023-12-19 01:56:45,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:45,649 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 232 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:45,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 124 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:56:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-19 01:56:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1718. [2023-12-19 01:56:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 1.500873616773442) internal successors, (2577), 1717 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2577 transitions. [2023-12-19 01:56:45,683 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2577 transitions. Word has length 189 [2023-12-19 01:56:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:45,683 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2577 transitions. [2023-12-19 01:56:45,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2577 transitions. [2023-12-19 01:56:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 01:56:45,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:45,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:45,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:56:45,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:45,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash 843492843, now seen corresponding path program 1 times [2023-12-19 01:56:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:45,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293242590] [2023-12-19 01:56:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:45,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293242590] [2023-12-19 01:56:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293242590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:56:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187208929] [2023-12-19 01:56:45,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:45,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:45,837 INFO L87 Difference]: Start difference. First operand 1718 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:46,629 INFO L93 Difference]: Finished difference Result 5079 states and 7622 transitions. [2023-12-19 01:56:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-19 01:56:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:46,643 INFO L225 Difference]: With dead ends: 5079 [2023-12-19 01:56:46,643 INFO L226 Difference]: Without dead ends: 3362 [2023-12-19 01:56:46,647 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 [2023-12-19 01:56:46,648 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 253 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:46,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 177 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:56:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2023-12-19 01:56:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 3360. [2023-12-19 01:56:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 1.432271509377791) internal successors, (4811), 3359 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4811 transitions. [2023-12-19 01:56:46,725 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4811 transitions. Word has length 192 [2023-12-19 01:56:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:46,725 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 4811 transitions. [2023-12-19 01:56:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4811 transitions. [2023-12-19 01:56:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-19 01:56:46,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:46,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:46,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:56:46,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 163064000, now seen corresponding path program 1 times [2023-12-19 01:56:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203691151] [2023-12-19 01:56:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:46,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:46,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203691151] [2023-12-19 01:56:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203691151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:46,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489692591] [2023-12-19 01:56:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:46,930 INFO L87 Difference]: Start difference. First operand 3360 states and 4811 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:47,707 INFO L93 Difference]: Finished difference Result 9994 states and 14318 transitions. [2023-12-19 01:56:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:47,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-12-19 01:56:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:47,763 INFO L225 Difference]: With dead ends: 9994 [2023-12-19 01:56:47,764 INFO L226 Difference]: Without dead ends: 6635 [2023-12-19 01:56:47,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:47,769 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 242 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:47,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 171 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:56:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2023-12-19 01:56:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6629. [2023-12-19 01:56:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6629 states, 6628 states have (on average 1.368436934218467) internal successors, (9070), 6628 states have internal predecessors, (9070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 9070 transitions. [2023-12-19 01:56:47,924 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 9070 transitions. Word has length 193 [2023-12-19 01:56:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:47,924 INFO L495 AbstractCegarLoop]: Abstraction has 6629 states and 9070 transitions. [2023-12-19 01:56:47,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 9070 transitions. [2023-12-19 01:56:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-19 01:56:47,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:47,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:56:47,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:47,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash -312671647, now seen corresponding path program 1 times [2023-12-19 01:56:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152632979] [2023-12-19 01:56:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152632979] [2023-12-19 01:56:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152632979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:56:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:56:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609265370] [2023-12-19 01:56:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:48,325 INFO L87 Difference]: Start difference. First operand 6629 states and 9070 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:49,164 INFO L93 Difference]: Finished difference Result 17746 states and 24320 transitions. [2023-12-19 01:56:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:49,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-19 01:56:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:49,207 INFO L225 Difference]: With dead ends: 17746 [2023-12-19 01:56:49,207 INFO L226 Difference]: Without dead ends: 11118 [2023-12-19 01:56:49,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:56:49,224 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:49,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 169 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:56:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2023-12-19 01:56:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 11095. [2023-12-19 01:56:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11095 states, 11094 states have (on average 1.3208941770326303) internal successors, (14654), 11094 states have internal predecessors, (14654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 14654 transitions. [2023-12-19 01:56:49,472 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 14654 transitions. Word has length 198 [2023-12-19 01:56:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:49,472 INFO L495 AbstractCegarLoop]: Abstraction has 11095 states and 14654 transitions. [2023-12-19 01:56:49,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 14654 transitions. [2023-12-19 01:56:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 01:56:49,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:49,488 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:49,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:56:49,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:49,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash -234912202, now seen corresponding path program 1 times [2023-12-19 01:56:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143377320] [2023-12-19 01:56:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:49,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:49,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143377320] [2023-12-19 01:56:49,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143377320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:56:49,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638019780] [2023-12-19 01:56:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:49,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:49,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:49,736 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) [2023-12-19 01:56:49,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:56:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:49,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:56:49,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:56:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:56:49,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:56:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638019780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:49,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:56:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-19 01:56:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713360608] [2023-12-19 01:56:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:49,954 INFO L87 Difference]: Start difference. First operand 11095 states and 14654 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:50,859 INFO L93 Difference]: Finished difference Result 29905 states and 39730 transitions. [2023-12-19 01:56:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:50,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-19 01:56:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:50,903 INFO L225 Difference]: With dead ends: 29905 [2023-12-19 01:56:50,903 INFO L226 Difference]: Without dead ends: 19014 [2023-12-19 01:56:50,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:50,917 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 230 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:50,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 410 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:56:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19014 states. [2023-12-19 01:56:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19014 to 19010. [2023-12-19 01:56:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19010 states, 19009 states have (on average 1.202798674312168) internal successors, (22864), 19009 states have internal predecessors, (22864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19010 states to 19010 states and 22864 transitions. [2023-12-19 01:56:51,233 INFO L78 Accepts]: Start accepts. Automaton has 19010 states and 22864 transitions. Word has length 203 [2023-12-19 01:56:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:51,234 INFO L495 AbstractCegarLoop]: Abstraction has 19010 states and 22864 transitions. [2023-12-19 01:56:51,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 19010 states and 22864 transitions. [2023-12-19 01:56:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-19 01:56:51,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:51,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:51,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:56:51,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:51,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:51,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -862039854, now seen corresponding path program 1 times [2023-12-19 01:56:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889070699] [2023-12-19 01:56:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889070699] [2023-12-19 01:56:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889070699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:56:51,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114011021] [2023-12-19 01:56:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:51,929 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) [2023-12-19 01:56:51,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:56:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:52,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:56:52,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:56:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:56:52,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:56:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114011021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:52,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:56:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 01:56:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920056739] [2023-12-19 01:56:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:52,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:52,142 INFO L87 Difference]: Start difference. First operand 19010 states and 22864 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:53,000 INFO L93 Difference]: Finished difference Result 42893 states and 52534 transitions. [2023-12-19 01:56:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 205 [2023-12-19 01:56:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:53,061 INFO L225 Difference]: With dead ends: 42893 [2023-12-19 01:56:53,062 INFO L226 Difference]: Without dead ends: 24087 [2023-12-19 01:56:53,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:53,086 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:53,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 168 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:56:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24087 states. [2023-12-19 01:56:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24087 to 24083. [2023-12-19 01:56:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24083 states, 24082 states have (on average 1.1824599285773607) internal successors, (28476), 24082 states have internal predecessors, (28476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24083 states to 24083 states and 28476 transitions. [2023-12-19 01:56:53,538 INFO L78 Accepts]: Start accepts. Automaton has 24083 states and 28476 transitions. Word has length 205 [2023-12-19 01:56:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:53,538 INFO L495 AbstractCegarLoop]: Abstraction has 24083 states and 28476 transitions. [2023-12-19 01:56:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 24083 states and 28476 transitions. [2023-12-19 01:56:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-19 01:56:53,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:53,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:56:53,779 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,SelfDestructingSolverStorable8 [2023-12-19 01:56:53,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:53,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1981937413, now seen corresponding path program 1 times [2023-12-19 01:56:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985122879] [2023-12-19 01:56:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:56:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985122879] [2023-12-19 01:56:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985122879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:56:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468252168] [2023-12-19 01:56:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:54,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:54,124 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) [2023-12-19 01:56:54,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:56:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:54,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:56:54,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:56:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 01:56:54,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:56:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468252168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:56:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 01:56:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047291363] [2023-12-19 01:56:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:54,472 INFO L87 Difference]: Start difference. First operand 24083 states and 28476 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:55,306 INFO L93 Difference]: Finished difference Result 58777 states and 70028 transitions. [2023-12-19 01:56:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 214 [2023-12-19 01:56:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:55,362 INFO L225 Difference]: With dead ends: 58777 [2023-12-19 01:56:55,362 INFO L226 Difference]: Without dead ends: 35101 [2023-12-19 01:56:55,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:55,386 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 89 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:55,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 179 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:56:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35101 states. [2023-12-19 01:56:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35101 to 35085. [2023-12-19 01:56:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35085 states, 35084 states have (on average 1.1760916657165659) internal successors, (41262), 35084 states have internal predecessors, (41262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35085 states to 35085 states and 41262 transitions. [2023-12-19 01:56:55,825 INFO L78 Accepts]: Start accepts. Automaton has 35085 states and 41262 transitions. Word has length 214 [2023-12-19 01:56:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:55,826 INFO L495 AbstractCegarLoop]: Abstraction has 35085 states and 41262 transitions. [2023-12-19 01:56:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35085 states and 41262 transitions. [2023-12-19 01:56:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-19 01:56:55,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:55,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:55,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:56:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:56,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:56,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1424760763, now seen corresponding path program 1 times [2023-12-19 01:56:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620448153] [2023-12-19 01:56:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 01:56:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620448153] [2023-12-19 01:56:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620448153] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:56:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70250696] [2023-12-19 01:56:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:56,654 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) [2023-12-19 01:56:56,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:56:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:56,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:56:56,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:56:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 01:56:57,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:56:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70250696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:57,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:56:57,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:56:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828138827] [2023-12-19 01:56:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:57,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:57,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:57,007 INFO L87 Difference]: Start difference. First operand 35085 states and 41262 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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) [2023-12-19 01:56:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:56:58,008 INFO L93 Difference]: Finished difference Result 84435 states and 99670 transitions. [2023-12-19 01:56:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:56:58,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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) Word has length 227 [2023-12-19 01:56:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:56:58,100 INFO L225 Difference]: With dead ends: 84435 [2023-12-19 01:56:58,100 INFO L226 Difference]: Without dead ends: 49757 [2023-12-19 01:56:58,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:58,131 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 63 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:56:58,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 216 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:56:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49757 states. [2023-12-19 01:56:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49757 to 47074. [2023-12-19 01:56:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47074 states, 47073 states have (on average 1.1830985915492958) internal successors, (55692), 47073 states have internal predecessors, (55692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:56:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47074 states to 47074 states and 55692 transitions. [2023-12-19 01:56:59,028 INFO L78 Accepts]: Start accepts. Automaton has 47074 states and 55692 transitions. Word has length 227 [2023-12-19 01:56:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:56:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 47074 states and 55692 transitions. [2023-12-19 01:56:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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) [2023-12-19 01:56:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 47074 states and 55692 transitions. [2023-12-19 01:56:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-19 01:56:59,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:56:59,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:56:59,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:56:59,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:59,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:56:59,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:56:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash 939757049, now seen corresponding path program 1 times [2023-12-19 01:56:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:56:59,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593511400] [2023-12-19 01:56:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:56:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 01:56:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:56:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593511400] [2023-12-19 01:56:59,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593511400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:56:59,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101736130] [2023-12-19 01:56:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:56:59,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:56:59,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:56:59,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:56:59,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:56:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:56:59,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:56:59,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:56:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 01:56:59,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:56:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101736130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:56:59,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:56:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:56:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103406161] [2023-12-19 01:56:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:56:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:56:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:56:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:56:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:56:59,950 INFO L87 Difference]: Start difference. First operand 47074 states and 55692 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:00,805 INFO L93 Difference]: Finished difference Result 93744 states and 110936 transitions. [2023-12-19 01:57:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 244 [2023-12-19 01:57:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:00,884 INFO L225 Difference]: With dead ends: 93744 [2023-12-19 01:57:00,884 INFO L226 Difference]: Without dead ends: 47077 [2023-12-19 01:57:00,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:57:00,926 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 262 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:00,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 339 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:57:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47077 states. [2023-12-19 01:57:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47077 to 45855. [2023-12-19 01:57:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45855 states, 45854 states have (on average 1.1619269856501069) internal successors, (53279), 45854 states have internal predecessors, (53279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45855 states to 45855 states and 53279 transitions. [2023-12-19 01:57:01,758 INFO L78 Accepts]: Start accepts. Automaton has 45855 states and 53279 transitions. Word has length 244 [2023-12-19 01:57:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 45855 states and 53279 transitions. [2023-12-19 01:57:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 45855 states and 53279 transitions. [2023-12-19 01:57:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-19 01:57:01,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:01,949 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:01,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 01:57:02,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1200500378, now seen corresponding path program 1 times [2023-12-19 01:57:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203527790] [2023-12-19 01:57:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:02,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 01:57:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203527790] [2023-12-19 01:57:02,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203527790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:02,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556966825] [2023-12-19 01:57:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:02,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:02,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:57:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:02,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:57:02,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:57:02,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556966825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:57:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478078748] [2023-12-19 01:57:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:57:02,728 INFO L87 Difference]: Start difference. First operand 45855 states and 53279 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:03,613 INFO L93 Difference]: Finished difference Result 88238 states and 102174 transitions. [2023-12-19 01:57:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2023-12-19 01:57:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:03,671 INFO L225 Difference]: With dead ends: 88238 [2023-12-19 01:57:03,671 INFO L226 Difference]: Without dead ends: 42790 [2023-12-19 01:57:03,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:57:03,728 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 248 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:03,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 373 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:57:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42790 states. [2023-12-19 01:57:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42790 to 39331. [2023-12-19 01:57:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39331 states, 39330 states have (on average 1.1241291634884312) internal successors, (44212), 39330 states have internal predecessors, (44212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39331 states to 39331 states and 44212 transitions. [2023-12-19 01:57:04,309 INFO L78 Accepts]: Start accepts. Automaton has 39331 states and 44212 transitions. Word has length 245 [2023-12-19 01:57:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:04,309 INFO L495 AbstractCegarLoop]: Abstraction has 39331 states and 44212 transitions. [2023-12-19 01:57:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 39331 states and 44212 transitions. [2023-12-19 01:57:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-19 01:57:04,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:04,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:04,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:04,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:04,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:04,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1339770074, now seen corresponding path program 1 times [2023-12-19 01:57:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891383375] [2023-12-19 01:57:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 01:57:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891383375] [2023-12-19 01:57:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891383375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:04,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:57:04,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:57:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342773329] [2023-12-19 01:57:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:04,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:57:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:57:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:04,990 INFO L87 Difference]: Start difference. First operand 39331 states and 44212 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:06,321 INFO L93 Difference]: Finished difference Result 145612 states and 163844 transitions. [2023-12-19 01:57:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:57:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 246 [2023-12-19 01:57:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:06,449 INFO L225 Difference]: With dead ends: 145612 [2023-12-19 01:57:06,449 INFO L226 Difference]: Without dead ends: 106891 [2023-12-19 01:57:06,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:06,488 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 880 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:06,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 325 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:57:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106891 states. [2023-12-19 01:57:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106891 to 87352. [2023-12-19 01:57:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87352 states, 87351 states have (on average 1.126535471832034) internal successors, (98404), 87351 states have internal predecessors, (98404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87352 states to 87352 states and 98404 transitions. [2023-12-19 01:57:08,010 INFO L78 Accepts]: Start accepts. Automaton has 87352 states and 98404 transitions. Word has length 246 [2023-12-19 01:57:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 87352 states and 98404 transitions. [2023-12-19 01:57:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87352 states and 98404 transitions. [2023-12-19 01:57:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-19 01:57:08,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:08,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:08,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:57:08,049 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:08,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668037, now seen corresponding path program 1 times [2023-12-19 01:57:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390379730] [2023-12-19 01:57:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 01:57:08,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390379730] [2023-12-19 01:57:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390379730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:08,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:57:08,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:57:08,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115327723] [2023-12-19 01:57:08,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:57:08,211 INFO L87 Difference]: Start difference. First operand 87352 states and 98404 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:09,306 INFO L93 Difference]: Finished difference Result 249146 states and 280525 transitions. [2023-12-19 01:57:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 313 [2023-12-19 01:57:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:09,532 INFO L225 Difference]: With dead ends: 249146 [2023-12-19 01:57:09,533 INFO L226 Difference]: Without dead ends: 161998 [2023-12-19 01:57:09,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:57:09,581 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 269 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:09,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 546 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:57:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161998 states. [2023-12-19 01:57:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161998 to 161996. [2023-12-19 01:57:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161996 states, 161995 states have (on average 1.1251458378345012) internal successors, (182268), 161995 states have internal predecessors, (182268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161996 states to 161996 states and 182268 transitions. [2023-12-19 01:57:12,140 INFO L78 Accepts]: Start accepts. Automaton has 161996 states and 182268 transitions. Word has length 313 [2023-12-19 01:57:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:12,140 INFO L495 AbstractCegarLoop]: Abstraction has 161996 states and 182268 transitions. [2023-12-19 01:57:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 161996 states and 182268 transitions. [2023-12-19 01:57:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-19 01:57:12,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:12,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:57:12,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:12,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash -572345456, now seen corresponding path program 1 times [2023-12-19 01:57:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:12,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380721371] [2023-12-19 01:57:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 01:57:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380721371] [2023-12-19 01:57:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380721371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281419854] [2023-12-19 01:57:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:12,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:12,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:12,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:57:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:13,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:57:13,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 01:57:13,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281419854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-19 01:57:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678643203] [2023-12-19 01:57:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:13,459 INFO L87 Difference]: Start difference. First operand 161996 states and 182268 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:15,319 INFO L93 Difference]: Finished difference Result 379710 states and 428537 transitions. [2023-12-19 01:57:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 333 [2023-12-19 01:57:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:15,710 INFO L225 Difference]: With dead ends: 379710 [2023-12-19 01:57:15,710 INFO L226 Difference]: Without dead ends: 217918 [2023-12-19 01:57:15,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:15,812 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 114 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:15,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 196 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:57:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217918 states. [2023-12-19 01:57:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217918 to 211004. [2023-12-19 01:57:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211004 states, 211003 states have (on average 1.133235072487121) internal successors, (239116), 211003 states have internal predecessors, (239116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211004 states to 211004 states and 239116 transitions. [2023-12-19 01:57:19,582 INFO L78 Accepts]: Start accepts. Automaton has 211004 states and 239116 transitions. Word has length 333 [2023-12-19 01:57:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:19,582 INFO L495 AbstractCegarLoop]: Abstraction has 211004 states and 239116 transitions. [2023-12-19 01:57:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 211004 states and 239116 transitions. [2023-12-19 01:57:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-19 01:57:19,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:19,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:19,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:19,829 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:19,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1127292953, now seen corresponding path program 1 times [2023-12-19 01:57:19,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123441007] [2023-12-19 01:57:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 01:57:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123441007] [2023-12-19 01:57:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123441007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:57:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:57:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326681281] [2023-12-19 01:57:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:20,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:57:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:57:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:20,337 INFO L87 Difference]: Start difference. First operand 211004 states and 239116 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:22,983 INFO L93 Difference]: Finished difference Result 479569 states and 544549 transitions. [2023-12-19 01:57:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:57:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 339 [2023-12-19 01:57:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:23,413 INFO L225 Difference]: With dead ends: 479569 [2023-12-19 01:57:23,414 INFO L226 Difference]: Without dead ends: 268769 [2023-12-19 01:57:23,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:57:23,538 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 380 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:23,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 147 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:57:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268769 states. [2023-12-19 01:57:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268769 to 240659. [2023-12-19 01:57:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240659 states, 240658 states have (on average 1.1297609055173732) internal successors, (271886), 240658 states have internal predecessors, (271886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240659 states to 240659 states and 271886 transitions. [2023-12-19 01:57:28,182 INFO L78 Accepts]: Start accepts. Automaton has 240659 states and 271886 transitions. Word has length 339 [2023-12-19 01:57:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:28,183 INFO L495 AbstractCegarLoop]: Abstraction has 240659 states and 271886 transitions. [2023-12-19 01:57:28,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 240659 states and 271886 transitions. [2023-12-19 01:57:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-19 01:57:28,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:28,234 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:57:28,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:28,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2018244348, now seen corresponding path program 1 times [2023-12-19 01:57:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:28,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632778408] [2023-12-19 01:57:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 01:57:29,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632778408] [2023-12-19 01:57:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632778408] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374946754] [2023-12-19 01:57:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:29,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:29,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:29,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:29,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:57:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:29,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:57:29,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-19 01:57:29,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374946754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:57:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287569012] [2023-12-19 01:57:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:29,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:57:29,884 INFO L87 Difference]: Start difference. First operand 240659 states and 271886 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:31,980 INFO L93 Difference]: Finished difference Result 511845 states and 578364 transitions. [2023-12-19 01:57:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:31,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 351 [2023-12-19 01:57:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:32,832 INFO L225 Difference]: With dead ends: 511845 [2023-12-19 01:57:32,833 INFO L226 Difference]: Without dead ends: 271390 [2023-12-19 01:57:32,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:57:32,916 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 166 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:32,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 184 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:57:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271390 states. [2023-12-19 01:57:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271390 to 266488. [2023-12-19 01:57:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266488 states, 266487 states have (on average 1.1210115315193612) internal successors, (298735), 266487 states have internal predecessors, (298735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266488 states to 266488 states and 298735 transitions. [2023-12-19 01:57:37,375 INFO L78 Accepts]: Start accepts. Automaton has 266488 states and 298735 transitions. Word has length 351 [2023-12-19 01:57:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:37,375 INFO L495 AbstractCegarLoop]: Abstraction has 266488 states and 298735 transitions. [2023-12-19 01:57:37,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 266488 states and 298735 transitions. [2023-12-19 01:57:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-19 01:57:37,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:37,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:37,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 01:57:37,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:37,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash 139281658, now seen corresponding path program 1 times [2023-12-19 01:57:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400472221] [2023-12-19 01:57:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:37,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-19 01:57:38,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400472221] [2023-12-19 01:57:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400472221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297187060] [2023-12-19 01:57:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:38,265 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:38,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:57:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:38,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:57:38,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 01:57:38,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:38,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297187060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:38,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:38,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:57:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793471436] [2023-12-19 01:57:38,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:38,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:38,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:57:38,620 INFO L87 Difference]: Start difference. First operand 266488 states and 298735 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:41,116 INFO L93 Difference]: Finished difference Result 533799 states and 598256 transitions. [2023-12-19 01:57:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 353 [2023-12-19 01:57:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:41,952 INFO L225 Difference]: With dead ends: 533799 [2023-12-19 01:57:41,952 INFO L226 Difference]: Without dead ends: 267921 [2023-12-19 01:57:42,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:57:42,096 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 96 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:42,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 100 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:57:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267921 states. [2023-12-19 01:57:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267921 to 266681. [2023-12-19 01:57:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266681 states, 266680 states have (on average 1.119915254237288) internal successors, (298659), 266680 states have internal predecessors, (298659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266681 states to 266681 states and 298659 transitions. [2023-12-19 01:57:46,570 INFO L78 Accepts]: Start accepts. Automaton has 266681 states and 298659 transitions. Word has length 353 [2023-12-19 01:57:46,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:46,570 INFO L495 AbstractCegarLoop]: Abstraction has 266681 states and 298659 transitions. [2023-12-19 01:57:46,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 266681 states and 298659 transitions. [2023-12-19 01:57:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-19 01:57:46,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:46,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 01:57:46,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:46,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:46,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2089330828, now seen corresponding path program 1 times [2023-12-19 01:57:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143703619] [2023-12-19 01:57:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 222 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 01:57:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143703619] [2023-12-19 01:57:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143703619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491553026] [2023-12-19 01:57:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:47,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:47,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:47,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:57:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:47,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:57:47,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-19 01:57:47,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:47,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491553026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:47,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:47,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:57:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971454592] [2023-12-19 01:57:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:57:47,799 INFO L87 Difference]: Start difference. First operand 266681 states and 298659 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:49,942 INFO L93 Difference]: Finished difference Result 537055 states and 601909 transitions. [2023-12-19 01:57:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 390 [2023-12-19 01:57:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:57:50,431 INFO L225 Difference]: With dead ends: 537055 [2023-12-19 01:57:50,432 INFO L226 Difference]: Without dead ends: 270984 [2023-12-19 01:57:51,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:57:51,025 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:57:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 424 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:57:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270984 states. [2023-12-19 01:57:54,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270984 to 255490. [2023-12-19 01:57:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255490 states, 255489 states have (on average 1.117053963184325) internal successors, (285395), 255489 states have internal predecessors, (285395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255490 states to 255490 states and 285395 transitions. [2023-12-19 01:57:55,129 INFO L78 Accepts]: Start accepts. Automaton has 255490 states and 285395 transitions. Word has length 390 [2023-12-19 01:57:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:57:55,129 INFO L495 AbstractCegarLoop]: Abstraction has 255490 states and 285395 transitions. [2023-12-19 01:57:55,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 255490 states and 285395 transitions. [2023-12-19 01:57:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-19 01:57:55,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:57:55,553 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:57:55,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 01:57:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:55,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:57:55,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:57:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1546052554, now seen corresponding path program 1 times [2023-12-19 01:57:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:57:55,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910648514] [2023-12-19 01:57:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:55,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:57:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 234 proven. 6 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-19 01:57:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:57:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910648514] [2023-12-19 01:57:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910648514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:57:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959750331] [2023-12-19 01:57:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:57:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:57:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:57:56,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:57:57,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 01:57:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:57:57,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:57:57,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:57:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-19 01:57:57,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:57:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959750331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:57:57,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:57:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:57:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741383448] [2023-12-19 01:57:57,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:57:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:57:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:57:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:57:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:57:57,256 INFO L87 Difference]: Start difference. First operand 255490 states and 285395 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:57:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:57:59,698 INFO L93 Difference]: Finished difference Result 673907 states and 752722 transitions. [2023-12-19 01:57:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:57:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 398 [2023-12-19 01:57:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:58:00,468 INFO L225 Difference]: With dead ends: 673907 [2023-12-19 01:58:00,469 INFO L226 Difference]: Without dead ends: 419027 [2023-12-19 01:58:00,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:58:00,604 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 320 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:58:00,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 970 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:58:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419027 states. [2023-12-19 01:58:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419027 to 384658. [2023-12-19 01:58:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384658 states, 384657 states have (on average 1.1059853323870357) internal successors, (425425), 384657 states have internal predecessors, (425425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384658 states to 384658 states and 425425 transitions. [2023-12-19 01:58:07,222 INFO L78 Accepts]: Start accepts. Automaton has 384658 states and 425425 transitions. Word has length 398 [2023-12-19 01:58:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:58:07,222 INFO L495 AbstractCegarLoop]: Abstraction has 384658 states and 425425 transitions. [2023-12-19 01:58:07,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:07,223 INFO L276 IsEmpty]: Start isEmpty. Operand 384658 states and 425425 transitions. [2023-12-19 01:58:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-19 01:58:07,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:58:07,311 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:58:07,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 01:58:07,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-19 01:58:07,512 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:58:07,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:58:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -756621422, now seen corresponding path program 1 times [2023-12-19 01:58:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:58:07,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986665470] [2023-12-19 01:58:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:58:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 245 proven. 6 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-19 01:58:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:58:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986665470] [2023-12-19 01:58:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986665470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:58:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510799057] [2023-12-19 01:58:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:09,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:58:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:58:09,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:58:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 01:58:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:09,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:58:09,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:58:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-12-19 01:58:09,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:58:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510799057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:58:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:58:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:58:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81010664] [2023-12-19 01:58:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:58:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:58:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:58:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:58:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:58:09,985 INFO L87 Difference]: Start difference. First operand 384658 states and 425425 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 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) [2023-12-19 01:58:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:58:12,969 INFO L93 Difference]: Finished difference Result 752070 states and 832026 transitions. [2023-12-19 01:58:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:58:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 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 404 [2023-12-19 01:58:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:58:13,655 INFO L225 Difference]: With dead ends: 752070 [2023-12-19 01:58:13,656 INFO L226 Difference]: Without dead ends: 368022 [2023-12-19 01:58:13,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:58:13,865 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 277 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:58:13,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 369 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:58:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368022 states. [2023-12-19 01:58:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368022 to 357857. [2023-12-19 01:58:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357857 states, 357856 states have (on average 1.0900306268443172) internal successors, (390074), 357856 states have internal predecessors, (390074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357857 states to 357857 states and 390074 transitions. [2023-12-19 01:58:20,365 INFO L78 Accepts]: Start accepts. Automaton has 357857 states and 390074 transitions. Word has length 404 [2023-12-19 01:58:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:58:20,365 INFO L495 AbstractCegarLoop]: Abstraction has 357857 states and 390074 transitions. [2023-12-19 01:58:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 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) [2023-12-19 01:58:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand 357857 states and 390074 transitions. [2023-12-19 01:58:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-19 01:58:20,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:58:20,450 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:58:20,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 01:58:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-19 01:58:20,652 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:58:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:58:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -399635516, now seen corresponding path program 1 times [2023-12-19 01:58:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:58:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791493164] [2023-12-19 01:58:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:58:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 276 proven. 6 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-19 01:58:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:58:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791493164] [2023-12-19 01:58:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791493164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:58:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478213776] [2023-12-19 01:58:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:58:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:58:21,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:58:21,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 01:58:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:21,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:58:21,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:58:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 356 proven. 106 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-19 01:58:22,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:58:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 356 proven. 106 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-19 01:58:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478213776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:58:22,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:58:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-19 01:58:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641364552] [2023-12-19 01:58:22,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:58:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:58:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:58:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:58:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:58:22,208 INFO L87 Difference]: Start difference. First operand 357857 states and 390074 transitions. Second operand has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:58:28,391 INFO L93 Difference]: Finished difference Result 1064856 states and 1158597 transitions. [2023-12-19 01:58:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:58:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 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 438 [2023-12-19 01:58:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:58:29,676 INFO L225 Difference]: With dead ends: 1064856 [2023-12-19 01:58:29,677 INFO L226 Difference]: Without dead ends: 707808 [2023-12-19 01:58:30,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:58:30,325 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 2108 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 3591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:58:30,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 477 Invalid, 3591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:58:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707808 states. [2023-12-19 01:58:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707808 to 645856. [2023-12-19 01:58:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645856 states, 645855 states have (on average 1.085966664344164) internal successors, (701377), 645855 states have internal predecessors, (701377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645856 states to 645856 states and 701377 transitions. [2023-12-19 01:58:43,843 INFO L78 Accepts]: Start accepts. Automaton has 645856 states and 701377 transitions. Word has length 438 [2023-12-19 01:58:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:58:43,843 INFO L495 AbstractCegarLoop]: Abstraction has 645856 states and 701377 transitions. [2023-12-19 01:58:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 645856 states and 701377 transitions. [2023-12-19 01:58:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-19 01:58:44,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:58:44,048 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 01:58:44,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 01:58:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 01:58:44,257 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:58:44,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:58:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash 394330908, now seen corresponding path program 1 times [2023-12-19 01:58:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:58:44,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358696219] [2023-12-19 01:58:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:58:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2023-12-19 01:58:45,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:58:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358696219] [2023-12-19 01:58:45,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358696219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:58:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908001605] [2023-12-19 01:58:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:58:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:58:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:58:45,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:58:45,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 01:58:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:58:45,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:58:45,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:58:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-19 01:58:45,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:58:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908001605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:58:45,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:58:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 01:58:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137923976] [2023-12-19 01:58:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:58:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:58:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:58:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:58:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:58:45,870 INFO L87 Difference]: Start difference. First operand 645856 states and 701377 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:58:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:58:54,955 INFO L93 Difference]: Finished difference Result 1901324 states and 2065408 transitions. [2023-12-19 01:58:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:58:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 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 509 [2023-12-19 01:58:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:58:57,776 INFO L225 Difference]: With dead ends: 1901324 [2023-12-19 01:58:57,776 INFO L226 Difference]: Without dead ends: 1256281 [2023-12-19 01:58:58,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:58:58,761 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 253 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:58:58,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 793 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:58:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256281 states.