/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:07:46,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:07:46,281 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:07:46,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:07:46,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:07:46,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:07:46,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:07:46,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:07:46,316 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:07:46,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:07:46,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:07:46,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:07:46,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:07:46,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:07:46,326 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:07:46,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:07:46,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:07:46,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:07:46,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:07:46,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:07:46,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:07:46,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:07:46,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:07:46,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:07:46,329 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:07:46,329 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:07:46,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:07:46,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:07:46,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:07:46,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:07:46,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:07:46,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:07:46,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:07:46,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:07:46,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:07:46,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:07:46,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:07:46,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:07:46,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:07:46,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:07:46,333 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:07:46,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:07:46,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:07:46,334 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:07:46,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:07:46,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:07:46,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:07:46,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:07:46,613 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:07:46,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:07:47,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:07:48,122 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:07:48,123 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:07:48,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5871b7a4/1b87975284d341f9bb05f5099c2e61e2/FLAGfd364c42a [2023-12-16 06:07:48,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5871b7a4/1b87975284d341f9bb05f5099c2e61e2 [2023-12-16 06:07:48,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:07:48,149 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:07:48,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:07:48,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:07:48,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:07:48,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ba2ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48, skipping insertion in model container [2023-12-16 06:07:48,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:07:48,441 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c[26792,26805] [2023-12-16 06:07:48,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:07:48,464 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:07:48,552 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c[26792,26805] [2023-12-16 06:07:48,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:07:48,587 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:07:48,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48 WrapperNode [2023-12-16 06:07:48,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:07:48,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:07:48,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:07:48,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:07:48,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,665 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 979 [2023-12-16 06:07:48,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:07:48,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:07:48,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:07:48,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:07:48,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,705 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 06:07:48,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:07:48,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:07:48,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:07:48,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:07:48,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (1/1) ... [2023-12-16 06:07:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:07:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:07:48,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:07:48,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:07:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:07:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:07:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:07:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:07:48,987 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:07:48,990 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:07:49,915 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:07:49,984 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:07:49,984 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:07:49,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:49 BoogieIcfgContainer [2023-12-16 06:07:49,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:07:49,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:07:49,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:07:49,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:07:49,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:48" (1/3) ... [2023-12-16 06:07:49,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f4c5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:49, skipping insertion in model container [2023-12-16 06:07:49,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:48" (2/3) ... [2023-12-16 06:07:49,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f4c5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:49, skipping insertion in model container [2023-12-16 06:07:49,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:49" (3/3) ... [2023-12-16 06:07:49,994 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c [2023-12-16 06:07:50,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:07:50,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:07:50,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:07:50,074 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;@19ffb921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:07:50,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:07:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 289 states have (on average 1.8304498269896194) internal successors, (529), 290 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:07:50,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:50,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:50,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:50,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash 41194659, now seen corresponding path program 1 times [2023-12-16 06:07:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934489213] [2023-12-16 06:07:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:50,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:50,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934489213] [2023-12-16 06:07:50,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934489213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:50,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:50,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:07:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39213165] [2023-12-16 06:07:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:50,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:07:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:07:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:07:50,485 INFO L87 Difference]: Start difference. First operand has 291 states, 289 states have (on average 1.8304498269896194) internal successors, (529), 290 states have internal predecessors, (529), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:50,551 INFO L93 Difference]: Finished difference Result 399 states and 721 transitions. [2023-12-16 06:07:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:07:50,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:07:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:50,576 INFO L225 Difference]: With dead ends: 399 [2023-12-16 06:07:50,576 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 06:07:50,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:07:50,583 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 521 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 06:07:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-16 06:07:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.8194444444444444) internal successors, (524), 288 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 524 transitions. [2023-12-16 06:07:50,636 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 524 transitions. Word has length 74 [2023-12-16 06:07:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:50,637 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 524 transitions. [2023-12-16 06:07:50,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 524 transitions. [2023-12-16 06:07:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:07:50,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:50,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:50,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:07:50,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:50,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1764243675, now seen corresponding path program 1 times [2023-12-16 06:07:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446927088] [2023-12-16 06:07:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:50,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446927088] [2023-12-16 06:07:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446927088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:50,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:50,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:07:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989912223] [2023-12-16 06:07:50,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:07:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:07:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:50,976 INFO L87 Difference]: Start difference. First operand 289 states and 524 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:51,081 INFO L93 Difference]: Finished difference Result 399 states and 715 transitions. [2023-12-16 06:07:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:07:51,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:07:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:51,084 INFO L225 Difference]: With dead ends: 399 [2023-12-16 06:07:51,085 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 06:07:51,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:51,087 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:51,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1526 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:07:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 06:07:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-16 06:07:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.7013888888888888) internal successors, (490), 288 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 490 transitions. [2023-12-16 06:07:51,115 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 490 transitions. Word has length 74 [2023-12-16 06:07:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:51,115 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 490 transitions. [2023-12-16 06:07:51,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 490 transitions. [2023-12-16 06:07:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:07:51,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:51,119 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] [2023-12-16 06:07:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:07:51,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:51,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:51,127 INFO L85 PathProgramCache]: Analyzing trace with hash -568914159, now seen corresponding path program 1 times [2023-12-16 06:07:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:51,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797386347] [2023-12-16 06:07:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:51,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:51,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797386347] [2023-12-16 06:07:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797386347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:51,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:51,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048185302] [2023-12-16 06:07:51,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:51,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,356 INFO L87 Difference]: Start difference. First operand 289 states and 490 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:51,401 INFO L93 Difference]: Finished difference Result 491 states and 844 transitions. [2023-12-16 06:07:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:51,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-16 06:07:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:51,404 INFO L225 Difference]: With dead ends: 491 [2023-12-16 06:07:51,404 INFO L226 Difference]: Without dead ends: 384 [2023-12-16 06:07:51,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,406 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 157 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:51,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 926 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-16 06:07:51,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2023-12-16 06:07:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.7052631578947368) internal successors, (648), 380 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 648 transitions. [2023-12-16 06:07:51,419 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 648 transitions. Word has length 107 [2023-12-16 06:07:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:51,420 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 648 transitions. [2023-12-16 06:07:51,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 648 transitions. [2023-12-16 06:07:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:07:51,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:51,423 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] [2023-12-16 06:07:51,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:07:51,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:51,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash -690119104, now seen corresponding path program 1 times [2023-12-16 06:07:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:51,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465955767] [2023-12-16 06:07:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465955767] [2023-12-16 06:07:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465955767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21458808] [2023-12-16 06:07:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:51,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,549 INFO L87 Difference]: Start difference. First operand 381 states and 648 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:51,581 INFO L93 Difference]: Finished difference Result 759 states and 1304 transitions. [2023-12-16 06:07:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 06:07:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:51,586 INFO L225 Difference]: With dead ends: 759 [2023-12-16 06:07:51,586 INFO L226 Difference]: Without dead ends: 560 [2023-12-16 06:07:51,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,598 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 158 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:51,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 939 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-12-16 06:07:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 556. [2023-12-16 06:07:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.7135135135135136) internal successors, (951), 555 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 951 transitions. [2023-12-16 06:07:51,624 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 951 transitions. Word has length 110 [2023-12-16 06:07:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:51,625 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 951 transitions. [2023-12-16 06:07:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 951 transitions. [2023-12-16 06:07:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 06:07:51,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:51,629 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] [2023-12-16 06:07:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:07:51,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:51,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -532460411, now seen corresponding path program 1 times [2023-12-16 06:07:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692730757] [2023-12-16 06:07:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692730757] [2023-12-16 06:07:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692730757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:51,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627712994] [2023-12-16 06:07:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:51,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,772 INFO L87 Difference]: Start difference. First operand 556 states and 951 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:51,810 INFO L93 Difference]: Finished difference Result 1264 states and 2177 transitions. [2023-12-16 06:07:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-16 06:07:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:51,816 INFO L225 Difference]: With dead ends: 1264 [2023-12-16 06:07:51,816 INFO L226 Difference]: Without dead ends: 890 [2023-12-16 06:07:51,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,820 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 151 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:51,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 940 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:51,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-16 06:07:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 884. [2023-12-16 06:07:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.7157417893544733) internal successors, (1515), 883 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1515 transitions. [2023-12-16 06:07:51,847 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1515 transitions. Word has length 113 [2023-12-16 06:07:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:51,847 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1515 transitions. [2023-12-16 06:07:51,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1515 transitions. [2023-12-16 06:07:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 06:07:51,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:51,850 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] [2023-12-16 06:07:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:07:51,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:51,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -915634700, now seen corresponding path program 1 times [2023-12-16 06:07:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:51,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740131240] [2023-12-16 06:07:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:51,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740131240] [2023-12-16 06:07:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740131240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:51,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986120105] [2023-12-16 06:07:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:51,985 INFO L87 Difference]: Start difference. First operand 884 states and 1515 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:52,033 INFO L93 Difference]: Finished difference Result 2208 states and 3797 transitions. [2023-12-16 06:07:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:52,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-16 06:07:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:52,040 INFO L225 Difference]: With dead ends: 2208 [2023-12-16 06:07:52,041 INFO L226 Difference]: Without dead ends: 1506 [2023-12-16 06:07:52,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:52,044 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 144 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:52,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 941 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-12-16 06:07:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1496. [2023-12-16 06:07:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 1.7117056856187292) internal successors, (2559), 1495 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2559 transitions. [2023-12-16 06:07:52,103 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2559 transitions. Word has length 116 [2023-12-16 06:07:52,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:52,104 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 2559 transitions. [2023-12-16 06:07:52,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2559 transitions. [2023-12-16 06:07:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 06:07:52,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:52,106 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] [2023-12-16 06:07:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:07:52,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1343523335, now seen corresponding path program 1 times [2023-12-16 06:07:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:52,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639930050] [2023-12-16 06:07:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639930050] [2023-12-16 06:07:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639930050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:07:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462331058] [2023-12-16 06:07:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:07:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:07:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:07:52,298 INFO L87 Difference]: Start difference. First operand 1496 states and 2559 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:52,619 INFO L93 Difference]: Finished difference Result 7692 states and 13311 transitions. [2023-12-16 06:07:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:07:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-16 06:07:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:52,648 INFO L225 Difference]: With dead ends: 7692 [2023-12-16 06:07:52,648 INFO L226 Difference]: Without dead ends: 6378 [2023-12-16 06:07:52,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:07:52,655 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1624 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:52,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 4150 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:07:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2023-12-16 06:07:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 2721. [2023-12-16 06:07:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2720 states have (on average 1.7136029411764706) internal successors, (4661), 2720 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4661 transitions. [2023-12-16 06:07:52,782 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4661 transitions. Word has length 119 [2023-12-16 06:07:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4661 transitions. [2023-12-16 06:07:52,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4661 transitions. [2023-12-16 06:07:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 06:07:52,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:52,785 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] [2023-12-16 06:07:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:07:52,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:52,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:52,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1232245922, now seen corresponding path program 1 times [2023-12-16 06:07:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:52,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573582431] [2023-12-16 06:07:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:52,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573582431] [2023-12-16 06:07:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573582431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:52,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:52,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:07:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708574833] [2023-12-16 06:07:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:07:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:07:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:52,910 INFO L87 Difference]: Start difference. First operand 2721 states and 4661 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:53,033 INFO L93 Difference]: Finished difference Result 7952 states and 13718 transitions. [2023-12-16 06:07:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:07:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2023-12-16 06:07:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:53,055 INFO L225 Difference]: With dead ends: 7952 [2023-12-16 06:07:53,055 INFO L226 Difference]: Without dead ends: 5413 [2023-12-16 06:07:53,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:07:53,064 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 541 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:53,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1579 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2023-12-16 06:07:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4050. [2023-12-16 06:07:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4049 states have (on average 1.716226228698444) internal successors, (6949), 4049 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6949 transitions. [2023-12-16 06:07:53,231 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6949 transitions. Word has length 120 [2023-12-16 06:07:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:53,232 INFO L495 AbstractCegarLoop]: Abstraction has 4050 states and 6949 transitions. [2023-12-16 06:07:53,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6949 transitions. [2023-12-16 06:07:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 06:07:53,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:53,235 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] [2023-12-16 06:07:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:07:53,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:53,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -517833982, now seen corresponding path program 1 times [2023-12-16 06:07:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851247435] [2023-12-16 06:07:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:53,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:53,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:53,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851247435] [2023-12-16 06:07:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851247435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:07:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458385655] [2023-12-16 06:07:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:07:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:07:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:53,366 INFO L87 Difference]: Start difference. First operand 4050 states and 6949 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:53,535 INFO L93 Difference]: Finished difference Result 11882 states and 20454 transitions. [2023-12-16 06:07:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:07:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-16 06:07:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:53,583 INFO L225 Difference]: With dead ends: 11882 [2023-12-16 06:07:53,584 INFO L226 Difference]: Without dead ends: 8014 [2023-12-16 06:07:53,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:07:53,597 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 541 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:53,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1569 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:07:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8014 states. [2023-12-16 06:07:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8014 to 6008. [2023-12-16 06:07:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6008 states, 6007 states have (on average 1.7128350258032297) internal successors, (10289), 6007 states have internal predecessors, (10289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6008 states to 6008 states and 10289 transitions. [2023-12-16 06:07:53,826 INFO L78 Accepts]: Start accepts. Automaton has 6008 states and 10289 transitions. Word has length 121 [2023-12-16 06:07:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:53,826 INFO L495 AbstractCegarLoop]: Abstraction has 6008 states and 10289 transitions. [2023-12-16 06:07:53,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6008 states and 10289 transitions. [2023-12-16 06:07:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 06:07:53,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:53,831 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] [2023-12-16 06:07:53,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:07:53,831 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:53,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1069715595, now seen corresponding path program 1 times [2023-12-16 06:07:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254934522] [2023-12-16 06:07:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:53,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254934522] [2023-12-16 06:07:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254934522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:07:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963650057] [2023-12-16 06:07:53,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:07:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:07:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:53,954 INFO L87 Difference]: Start difference. First operand 6008 states and 10289 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:54,222 INFO L93 Difference]: Finished difference Result 17698 states and 30398 transitions. [2023-12-16 06:07:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:07:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-12-16 06:07:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:54,253 INFO L225 Difference]: With dead ends: 17698 [2023-12-16 06:07:54,253 INFO L226 Difference]: Without dead ends: 11872 [2023-12-16 06:07:54,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:07:54,264 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 539 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:54,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1517 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11872 states. [2023-12-16 06:07:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11872 to 8906. [2023-12-16 06:07:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8906 states, 8905 states have (on average 1.7092644581695677) internal successors, (15221), 8905 states have internal predecessors, (15221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8906 states to 8906 states and 15221 transitions. [2023-12-16 06:07:54,572 INFO L78 Accepts]: Start accepts. Automaton has 8906 states and 15221 transitions. Word has length 122 [2023-12-16 06:07:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:54,572 INFO L495 AbstractCegarLoop]: Abstraction has 8906 states and 15221 transitions. [2023-12-16 06:07:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8906 states and 15221 transitions. [2023-12-16 06:07:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:07:54,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:54,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:07:54,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:07:54,578 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:54,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1347363147, now seen corresponding path program 1 times [2023-12-16 06:07:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:54,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223331805] [2023-12-16 06:07:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223331805] [2023-12-16 06:07:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223331805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:54,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388947398] [2023-12-16 06:07:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:54,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:54,657 INFO L87 Difference]: Start difference. First operand 8906 states and 15221 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:54,817 INFO L93 Difference]: Finished difference Result 20041 states and 34395 transitions. [2023-12-16 06:07:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 06:07:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:54,852 INFO L225 Difference]: With dead ends: 20041 [2023-12-16 06:07:54,852 INFO L226 Difference]: Without dead ends: 13810 [2023-12-16 06:07:54,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:54,867 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 164 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1084 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13810 states. [2023-12-16 06:07:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13810 to 13808. [2023-12-16 06:07:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 13807 states have (on average 1.7054392699355398) internal successors, (23547), 13807 states have internal predecessors, (23547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 23547 transitions. [2023-12-16 06:07:55,231 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 23547 transitions. Word has length 123 [2023-12-16 06:07:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:55,231 INFO L495 AbstractCegarLoop]: Abstraction has 13808 states and 23547 transitions. [2023-12-16 06:07:55,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 23547 transitions. [2023-12-16 06:07:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:07:55,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:55,234 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] [2023-12-16 06:07:55,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:07:55,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:55,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1791799961, now seen corresponding path program 1 times [2023-12-16 06:07:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132477716] [2023-12-16 06:07:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132477716] [2023-12-16 06:07:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132477716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963860503] [2023-12-16 06:07:55,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:55,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:55,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:55,332 INFO L87 Difference]: Start difference. First operand 13808 states and 23547 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:55,570 INFO L93 Difference]: Finished difference Result 30817 states and 52549 transitions. [2023-12-16 06:07:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 06:07:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:55,622 INFO L225 Difference]: With dead ends: 30817 [2023-12-16 06:07:55,623 INFO L226 Difference]: Without dead ends: 21204 [2023-12-16 06:07:55,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:55,646 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 157 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:55,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1077 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:55,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21204 states. [2023-12-16 06:07:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21204 to 21202. [2023-12-16 06:07:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21202 states, 21201 states have (on average 1.69529739163247) internal successors, (35942), 21201 states have internal predecessors, (35942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21202 states to 21202 states and 35942 transitions. [2023-12-16 06:07:56,342 INFO L78 Accepts]: Start accepts. Automaton has 21202 states and 35942 transitions. Word has length 123 [2023-12-16 06:07:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:56,343 INFO L495 AbstractCegarLoop]: Abstraction has 21202 states and 35942 transitions. [2023-12-16 06:07:56,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 21202 states and 35942 transitions. [2023-12-16 06:07:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:07:56,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:56,345 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] [2023-12-16 06:07:56,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:07:56,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:56,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1250403317, now seen corresponding path program 1 times [2023-12-16 06:07:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242903450] [2023-12-16 06:07:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:56,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:56,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242903450] [2023-12-16 06:07:56,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242903450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:56,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:07:56,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450144839] [2023-12-16 06:07:56,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:56,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:07:56,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:56,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:07:56,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:07:56,578 INFO L87 Difference]: Start difference. First operand 21202 states and 35942 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:57,105 INFO L93 Difference]: Finished difference Result 63310 states and 107652 transitions. [2023-12-16 06:07:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:07:57,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 06:07:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:57,217 INFO L225 Difference]: With dead ends: 63310 [2023-12-16 06:07:57,217 INFO L226 Difference]: Without dead ends: 42302 [2023-12-16 06:07:57,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:07:57,359 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 537 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:57,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1636 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42302 states. [2023-12-16 06:07:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42302 to 31618. [2023-12-16 06:07:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31618 states, 31617 states have (on average 1.6907676250118606) internal successors, (53457), 31617 states have internal predecessors, (53457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31618 states to 31618 states and 53457 transitions. [2023-12-16 06:07:58,260 INFO L78 Accepts]: Start accepts. Automaton has 31618 states and 53457 transitions. Word has length 123 [2023-12-16 06:07:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:07:58,260 INFO L495 AbstractCegarLoop]: Abstraction has 31618 states and 53457 transitions. [2023-12-16 06:07:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 31618 states and 53457 transitions. [2023-12-16 06:07:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:07:58,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:07:58,262 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] [2023-12-16 06:07:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:07:58,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:07:58,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:07:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash -378300953, now seen corresponding path program 1 times [2023-12-16 06:07:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:07:58,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974805150] [2023-12-16 06:07:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:07:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:07:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:07:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:07:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:07:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974805150] [2023-12-16 06:07:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974805150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:07:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:07:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:07:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968991487] [2023-12-16 06:07:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:07:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:07:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:07:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:07:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:58,456 INFO L87 Difference]: Start difference. First operand 31618 states and 53457 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:07:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:07:59,086 INFO L93 Difference]: Finished difference Result 70810 states and 119634 transitions. [2023-12-16 06:07:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:07:59,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 06:07:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:07:59,205 INFO L225 Difference]: With dead ends: 70810 [2023-12-16 06:07:59,206 INFO L226 Difference]: Without dead ends: 48478 [2023-12-16 06:07:59,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:07:59,245 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 143 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:07:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1026 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:07:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48478 states. [2023-12-16 06:08:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48478 to 48476. [2023-12-16 06:08:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48476 states, 48475 states have (on average 1.6780814853017019) internal successors, (81345), 48475 states have internal predecessors, (81345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48476 states to 48476 states and 81345 transitions. [2023-12-16 06:08:00,370 INFO L78 Accepts]: Start accepts. Automaton has 48476 states and 81345 transitions. Word has length 123 [2023-12-16 06:08:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:00,370 INFO L495 AbstractCegarLoop]: Abstraction has 48476 states and 81345 transitions. [2023-12-16 06:08:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 48476 states and 81345 transitions. [2023-12-16 06:08:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:08:00,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:00,372 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] [2023-12-16 06:08:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:08:00,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:00,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -112965429, now seen corresponding path program 1 times [2023-12-16 06:08:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:00,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311247766] [2023-12-16 06:08:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:08:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311247766] [2023-12-16 06:08:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311247766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:08:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890830782] [2023-12-16 06:08:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:00,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:08:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:08:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:08:00,621 INFO L87 Difference]: Start difference. First operand 48476 states and 81345 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:01,634 INFO L93 Difference]: Finished difference Result 107963 states and 180965 transitions. [2023-12-16 06:08:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:08:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-16 06:08:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:01,876 INFO L225 Difference]: With dead ends: 107963 [2023-12-16 06:08:01,876 INFO L226 Difference]: Without dead ends: 73581 [2023-12-16 06:08:01,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:08:01,932 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 150 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:01,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1062 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:08:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73581 states. [2023-12-16 06:08:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73581 to 73579. [2023-12-16 06:08:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73579 states, 73578 states have (on average 1.663010682540977) internal successors, (122361), 73578 states have internal predecessors, (122361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73579 states to 73579 states and 122361 transitions. [2023-12-16 06:08:03,780 INFO L78 Accepts]: Start accepts. Automaton has 73579 states and 122361 transitions. Word has length 123 [2023-12-16 06:08:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:03,781 INFO L495 AbstractCegarLoop]: Abstraction has 73579 states and 122361 transitions. [2023-12-16 06:08:03,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 73579 states and 122361 transitions. [2023-12-16 06:08:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 06:08:03,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:03,783 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] [2023-12-16 06:08:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:08:03,783 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash -524049101, now seen corresponding path program 1 times [2023-12-16 06:08:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:03,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652228338] [2023-12-16 06:08:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:08:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652228338] [2023-12-16 06:08:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652228338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:04,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:08:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401040509] [2023-12-16 06:08:04,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:04,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:08:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:08:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:08:04,297 INFO L87 Difference]: Start difference. First operand 73579 states and 122361 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:05,551 INFO L93 Difference]: Finished difference Result 146946 states and 244371 transitions. [2023-12-16 06:08:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:08:05,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-16 06:08:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:05,696 INFO L225 Difference]: With dead ends: 146946 [2023-12-16 06:08:05,696 INFO L226 Difference]: Without dead ends: 73581 [2023-12-16 06:08:05,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:08:05,768 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 149 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:05,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2288 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:08:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73581 states. [2023-12-16 06:08:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73581 to 73579. [2023-12-16 06:08:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73579 states, 73578 states have (on average 1.6545162956318464) internal successors, (121736), 73578 states have internal predecessors, (121736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73579 states to 73579 states and 121736 transitions. [2023-12-16 06:08:07,380 INFO L78 Accepts]: Start accepts. Automaton has 73579 states and 121736 transitions. Word has length 125 [2023-12-16 06:08:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:07,381 INFO L495 AbstractCegarLoop]: Abstraction has 73579 states and 121736 transitions. [2023-12-16 06:08:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 73579 states and 121736 transitions. [2023-12-16 06:08:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 06:08:07,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:07,382 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] [2023-12-16 06:08:07,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:08:07,383 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:07,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1236962520, now seen corresponding path program 1 times [2023-12-16 06:08:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:07,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622080954] [2023-12-16 06:08:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:08:07,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622080954] [2023-12-16 06:08:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622080954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:07,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:07,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:08:07,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351597922] [2023-12-16 06:08:07,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:07,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:08:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:08:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:08:07,829 INFO L87 Difference]: Start difference. First operand 73579 states and 121736 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:09,490 INFO L93 Difference]: Finished difference Result 215216 states and 356495 transitions. [2023-12-16 06:08:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:08:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-16 06:08:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:09,885 INFO L225 Difference]: With dead ends: 215216 [2023-12-16 06:08:09,886 INFO L226 Difference]: Without dead ends: 141851 [2023-12-16 06:08:09,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:08:09,941 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 579 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:09,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1846 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:08:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141851 states. [2023-12-16 06:08:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141851 to 141849. [2023-12-16 06:08:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141849 states, 141848 states have (on average 1.643258981444927) internal successors, (233093), 141848 states have internal predecessors, (233093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141849 states to 141849 states and 233093 transitions. [2023-12-16 06:08:12,852 INFO L78 Accepts]: Start accepts. Automaton has 141849 states and 233093 transitions. Word has length 128 [2023-12-16 06:08:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:12,852 INFO L495 AbstractCegarLoop]: Abstraction has 141849 states and 233093 transitions. [2023-12-16 06:08:12,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 141849 states and 233093 transitions. [2023-12-16 06:08:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 06:08:12,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:12,854 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] [2023-12-16 06:08:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:08:12,854 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:12,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash 294317482, now seen corresponding path program 1 times [2023-12-16 06:08:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595759287] [2023-12-16 06:08:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:12,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:08:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595759287] [2023-12-16 06:08:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595759287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:13,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:13,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:08:13,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410531192] [2023-12-16 06:08:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:13,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:08:13,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:08:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:08:13,149 INFO L87 Difference]: Start difference. First operand 141849 states and 233093 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:14,877 INFO L93 Difference]: Finished difference Result 147659 states and 240838 transitions. [2023-12-16 06:08:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:08:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-16 06:08:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:15,113 INFO L225 Difference]: With dead ends: 147659 [2023-12-16 06:08:15,113 INFO L226 Difference]: Without dead ends: 147657 [2023-12-16 06:08:15,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:08:15,143 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:15,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1444 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:08:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147657 states. [2023-12-16 06:08:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147657 to 145721. [2023-12-16 06:08:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145721 states, 145720 states have (on average 1.6259813340653309) internal successors, (236938), 145720 states have internal predecessors, (236938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145721 states to 145721 states and 236938 transitions. [2023-12-16 06:08:18,159 INFO L78 Accepts]: Start accepts. Automaton has 145721 states and 236938 transitions. Word has length 129 [2023-12-16 06:08:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:18,159 INFO L495 AbstractCegarLoop]: Abstraction has 145721 states and 236938 transitions. [2023-12-16 06:08:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 145721 states and 236938 transitions. [2023-12-16 06:08:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 06:08:18,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:18,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 06:08:18,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:08:18,165 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:18,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash -819992629, now seen corresponding path program 1 times [2023-12-16 06:08:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496082290] [2023-12-16 06:08:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:08:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496082290] [2023-12-16 06:08:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496082290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:08:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666319155] [2023-12-16 06:08:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:08:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:08:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:08:18,335 INFO L87 Difference]: Start difference. First operand 145721 states and 236938 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:21,689 INFO L93 Difference]: Finished difference Result 401521 states and 654935 transitions. [2023-12-16 06:08:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:08:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 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 166 [2023-12-16 06:08:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:22,388 INFO L225 Difference]: With dead ends: 401521 [2023-12-16 06:08:22,389 INFO L226 Difference]: Without dead ends: 335719 [2023-12-16 06:08:22,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:08:22,484 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1217 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2540 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:08:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335719 states. [2023-12-16 06:08:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335719 to 235223. [2023-12-16 06:08:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235223 states, 235222 states have (on average 1.6232665311918102) internal successors, (381828), 235222 states have internal predecessors, (381828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235223 states to 235223 states and 381828 transitions. [2023-12-16 06:08:28,281 INFO L78 Accepts]: Start accepts. Automaton has 235223 states and 381828 transitions. Word has length 166 [2023-12-16 06:08:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:08:28,281 INFO L495 AbstractCegarLoop]: Abstraction has 235223 states and 381828 transitions. [2023-12-16 06:08:28,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 235223 states and 381828 transitions. [2023-12-16 06:08:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 06:08:28,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:08:28,286 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 06:08:28,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:08:28,287 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:08:28,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:08:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 335811559, now seen corresponding path program 1 times [2023-12-16 06:08:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:08:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664880819] [2023-12-16 06:08:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:08:28,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:08:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:08:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 06:08:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:08:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664880819] [2023-12-16 06:08:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664880819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:08:28,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:08:28,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:08:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546108664] [2023-12-16 06:08:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:08:28,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:08:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:08:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:08:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:08:28,484 INFO L87 Difference]: Start difference. First operand 235223 states and 381828 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:08:32,330 INFO L93 Difference]: Finished difference Result 452131 states and 737555 transitions. [2023-12-16 06:08:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:08:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 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 166 [2023-12-16 06:08:32,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:08:33,435 INFO L225 Difference]: With dead ends: 452131 [2023-12-16 06:08:33,435 INFO L226 Difference]: Without dead ends: 387479 [2023-12-16 06:08:33,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:08:33,552 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1206 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:08:33,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 2803 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:08:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387479 states. Received shutdown request... [2023-12-16 06:08:38,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:08:39,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 06:08:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387479 to 319147. [2023-12-16 06:08:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319147 states, 319146 states have (on average 1.6246169464759075) internal successors, (518490), 319146 states have internal predecessors, (518490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:08:40,213 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:08:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:08:40,215 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 06:08:40,224 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:08:40,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:08:40,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:08:40 BoogieIcfgContainer [2023-12-16 06:08:40,231 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:08:40,232 INFO L158 Benchmark]: Toolchain (without parser) took 52083.01ms. Allocated memory was 341.8MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 282.7MB in the beginning and 4.4GB in the end (delta: -4.1GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 06:08:40,238 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 206.6MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:08:40,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.84ms. Allocated memory is still 341.8MB. Free memory was 282.4MB in the beginning and 306.9MB in the end (delta: -24.4MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. [2023-12-16 06:08:40,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.66ms. Allocated memory is still 341.8MB. Free memory was 306.9MB in the beginning and 301.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 06:08:40,239 INFO L158 Benchmark]: Boogie Preprocessor took 95.65ms. Allocated memory is still 341.8MB. Free memory was 301.7MB in the beginning and 295.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 06:08:40,244 INFO L158 Benchmark]: RCFGBuilder took 1222.58ms. Allocated memory is still 341.8MB. Free memory was 295.4MB in the beginning and 226.2MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-16 06:08:40,245 INFO L158 Benchmark]: TraceAbstraction took 50244.40ms. Allocated memory was 341.8MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 225.6MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-16 06:08:40,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 206.6MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 437.84ms. Allocated memory is still 341.8MB. Free memory was 282.4MB in the beginning and 306.9MB in the end (delta: -24.4MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.66ms. Allocated memory is still 341.8MB. Free memory was 306.9MB in the beginning and 301.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.65ms. Allocated memory is still 341.8MB. Free memory was 301.7MB in the beginning and 295.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1222.58ms. Allocated memory is still 341.8MB. Free memory was 295.4MB in the beginning and 226.2MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * TraceAbstraction took 50244.40ms. Allocated memory was 341.8MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 225.6MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 1280]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1280). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 291 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8158 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8158 mSDsluCounter, 31414 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20813 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 993 IncrementalHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 10601 mSDtfsCounter, 993 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235223occurred in iteration=19, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.9s AutomataMinimizationTime, 20 MinimizatonAttempts, 123143 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2405 NumberOfCodeBlocks, 2405 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2385 ConstructedInterpolants, 0 QuantifiedInterpolants, 6718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 54/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown