/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-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:40:37,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:40:37,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:40:37,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:40:37,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:40:37,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:40:37,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:40:37,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:40:37,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:40:37,791 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:40:37,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:40:37,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:40:37,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:40:37,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:40:37,797 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:40:37,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:40:37,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:40:37,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:40:37,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:40:37,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:40:37,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:40:37,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:40:37,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:40:37,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:40:37,801 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:40:37,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:40:37,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:40:37,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:40:37,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:40:37,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:40:37,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:40:37,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:40:37,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:40:37,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:40:37,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:40:37,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:40:37,804 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:40:37,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:40:37,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:40:37,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:40:37,805 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:40:37,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:40:37,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:40:37,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:40:38,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:40:38,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:40:38,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:40:38,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:40:38,068 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:40:38,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-21 13:40:39,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:40:39,522 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:40:39,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-21 13:40:39,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2951a6ae0/dc163350b70446cb946198294e6da020/FLAG822d80c87 [2023-12-21 13:40:39,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2951a6ae0/dc163350b70446cb946198294e6da020 [2023-12-21 13:40:39,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:40:39,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:40:39,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:40:39,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:40:39,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:40:39,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:40:39" (1/1) ... [2023-12-21 13:40:39,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163fc71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:39, skipping insertion in model container [2023-12-21 13:40:39,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:40:39" (1/1) ... [2023-12-21 13:40:39,622 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:40:39,834 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-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-12-21 13:40:39,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:40:39,923 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:40:39,985 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-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-12-21 13:40:40,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:40:40,059 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:40:40,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40 WrapperNode [2023-12-21 13:40:40,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:40:40,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:40:40,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:40:40,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:40:40,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,133 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1035 [2023-12-21 13:40:40,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:40:40,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:40:40,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:40:40,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:40:40,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,171 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:40:40,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:40:40,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:40:40,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:40:40,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:40:40,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (1/1) ... [2023-12-21 13:40:40,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:40:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:40:40,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:40:40,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:40:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:40:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:40:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:40:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:40:40,489 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:40:40,491 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:40:41,329 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:40:41,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:40:41,387 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:40:41,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:40:41 BoogieIcfgContainer [2023-12-21 13:40:41,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:40:41,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:40:41,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:40:41,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:40:41,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:40:39" (1/3) ... [2023-12-21 13:40:41,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275b746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:40:41, skipping insertion in model container [2023-12-21 13:40:41,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:40:40" (2/3) ... [2023-12-21 13:40:41,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275b746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:40:41, skipping insertion in model container [2023-12-21 13:40:41,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:40:41" (3/3) ... [2023-12-21 13:40:41,395 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-21 13:40:41,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:40:41,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:40:41,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:40:41,465 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;@29bacd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:40:41,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:40:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.7294117647058824) internal successors, (441), 256 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:40:41,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:41,480 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] [2023-12-21 13:40:41,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:41,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1717973070, now seen corresponding path program 1 times [2023-12-21 13:40:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987454357] [2023-12-21 13:40:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:42,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:42,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987454357] [2023-12-21 13:40:42,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987454357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:42,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:40:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679292387] [2023-12-21 13:40:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:40:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:40:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:40:42,191 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.7294117647058824) internal successors, (441), 256 states have internal predecessors, (441), 0 states have call successors, (0), 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 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:42,597 INFO L93 Difference]: Finished difference Result 1155 states and 1879 transitions. [2023-12-21 13:40:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:40:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 13:40:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:42,621 INFO L225 Difference]: With dead ends: 1155 [2023-12-21 13:40:42,621 INFO L226 Difference]: Without dead ends: 1022 [2023-12-21 13:40:42,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:40:42,631 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 3883 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:42,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3883 Valid, 3927 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-12-21 13:40:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 395. [2023-12-21 13:40:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.50253807106599) internal successors, (592), 394 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 592 transitions. [2023-12-21 13:40:42,714 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 592 transitions. Word has length 96 [2023-12-21 13:40:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:42,715 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 592 transitions. [2023-12-21 13:40:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 592 transitions. [2023-12-21 13:40:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 13:40:42,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:42,723 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] [2023-12-21 13:40:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:40:42,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:42,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2060246052, now seen corresponding path program 1 times [2023-12-21 13:40:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370386727] [2023-12-21 13:40:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370386727] [2023-12-21 13:40:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370386727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:40:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543702918] [2023-12-21 13:40:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:40:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:40:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:40:43,150 INFO L87 Difference]: Start difference. First operand 395 states and 592 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:43,457 INFO L93 Difference]: Finished difference Result 1972 states and 3056 transitions. [2023-12-21 13:40:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:40:43,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-21 13:40:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:43,467 INFO L225 Difference]: With dead ends: 1972 [2023-12-21 13:40:43,467 INFO L226 Difference]: Without dead ends: 1676 [2023-12-21 13:40:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:40:43,473 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 2342 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 2267 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:40:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2023-12-21 13:40:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1666. [2023-12-21 13:40:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.5465465465465464) internal successors, (2575), 1665 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2575 transitions. [2023-12-21 13:40:43,537 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2575 transitions. Word has length 97 [2023-12-21 13:40:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:43,540 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2575 transitions. [2023-12-21 13:40:43,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2575 transitions. [2023-12-21 13:40:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:43,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:43,545 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] [2023-12-21 13:40:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:40:43,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:43,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash 687546812, now seen corresponding path program 1 times [2023-12-21 13:40:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:43,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258672114] [2023-12-21 13:40:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258672114] [2023-12-21 13:40:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258672114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725183276] [2023-12-21 13:40:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:43,677 INFO L87 Difference]: Start difference. First operand 1666 states and 2575 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:43,934 INFO L93 Difference]: Finished difference Result 4412 states and 6891 transitions. [2023-12-21 13:40:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:43,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:43,946 INFO L225 Difference]: With dead ends: 4412 [2023-12-21 13:40:43,946 INFO L226 Difference]: Without dead ends: 2866 [2023-12-21 13:40:43,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:43,954 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1392 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:43,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 355 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2023-12-21 13:40:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2864. [2023-12-21 13:40:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 1.5536150890674119) internal successors, (4448), 2863 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4448 transitions. [2023-12-21 13:40:44,021 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4448 transitions. Word has length 98 [2023-12-21 13:40:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:44,024 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4448 transitions. [2023-12-21 13:40:44,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4448 transitions. [2023-12-21 13:40:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:44,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:44,036 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] [2023-12-21 13:40:44,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:40:44,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:44,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1209953867, now seen corresponding path program 1 times [2023-12-21 13:40:44,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483131199] [2023-12-21 13:40:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:44,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483131199] [2023-12-21 13:40:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483131199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:44,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:44,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282988453] [2023-12-21 13:40:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:44,193 INFO L87 Difference]: Start difference. First operand 2864 states and 4448 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:44,465 INFO L93 Difference]: Finished difference Result 7871 states and 12313 transitions. [2023-12-21 13:40:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:44,486 INFO L225 Difference]: With dead ends: 7871 [2023-12-21 13:40:44,487 INFO L226 Difference]: Without dead ends: 5164 [2023-12-21 13:40:44,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:44,499 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1350 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:44,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 359 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2023-12-21 13:40:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 5162. [2023-12-21 13:40:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5162 states, 5161 states have (on average 1.556287541174191) internal successors, (8032), 5161 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 8032 transitions. [2023-12-21 13:40:44,634 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 8032 transitions. Word has length 98 [2023-12-21 13:40:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:44,634 INFO L495 AbstractCegarLoop]: Abstraction has 5162 states and 8032 transitions. [2023-12-21 13:40:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 8032 transitions. [2023-12-21 13:40:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:44,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:44,638 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] [2023-12-21 13:40:44,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:40:44,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:44,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1230271206, now seen corresponding path program 1 times [2023-12-21 13:40:44,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:44,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716013859] [2023-12-21 13:40:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716013859] [2023-12-21 13:40:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716013859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:44,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423522593] [2023-12-21 13:40:44,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:44,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:44,754 INFO L87 Difference]: Start difference. First operand 5162 states and 8032 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:45,052 INFO L93 Difference]: Finished difference Result 14688 states and 22984 transitions. [2023-12-21 13:40:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:45,091 INFO L225 Difference]: With dead ends: 14688 [2023-12-21 13:40:45,091 INFO L226 Difference]: Without dead ends: 9724 [2023-12-21 13:40:45,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:45,103 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1336 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:45,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 368 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9724 states. [2023-12-21 13:40:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9724 to 9722. [2023-12-21 13:40:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9722 states, 9721 states have (on average 1.5584816376915955) internal successors, (15150), 9721 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 15150 transitions. [2023-12-21 13:40:45,350 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 15150 transitions. Word has length 98 [2023-12-21 13:40:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:45,350 INFO L495 AbstractCegarLoop]: Abstraction has 9722 states and 15150 transitions. [2023-12-21 13:40:45,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 15150 transitions. [2023-12-21 13:40:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:45,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:45,354 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] [2023-12-21 13:40:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:40:45,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:45,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1981339795, now seen corresponding path program 1 times [2023-12-21 13:40:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693969021] [2023-12-21 13:40:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693969021] [2023-12-21 13:40:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693969021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:45,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:45,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525059278] [2023-12-21 13:40:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:45,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:45,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:45,484 INFO L87 Difference]: Start difference. First operand 9722 states and 15150 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:45,965 INFO L93 Difference]: Finished difference Result 28648 states and 44742 transitions. [2023-12-21 13:40:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:46,038 INFO L225 Difference]: With dead ends: 28648 [2023-12-21 13:40:46,038 INFO L226 Difference]: Without dead ends: 19016 [2023-12-21 13:40:46,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:46,056 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1406 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:46,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 353 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:46,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19016 states. [2023-12-21 13:40:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19016 to 19014. [2023-12-21 13:40:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19014 states, 19013 states have (on average 1.554410140430232) internal successors, (29554), 19013 states have internal predecessors, (29554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19014 states to 19014 states and 29554 transitions. [2023-12-21 13:40:46,599 INFO L78 Accepts]: Start accepts. Automaton has 19014 states and 29554 transitions. Word has length 98 [2023-12-21 13:40:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:46,599 INFO L495 AbstractCegarLoop]: Abstraction has 19014 states and 29554 transitions. [2023-12-21 13:40:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 19014 states and 29554 transitions. [2023-12-21 13:40:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:46,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:46,605 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] [2023-12-21 13:40:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:40:46,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:46,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1351090338, now seen corresponding path program 1 times [2023-12-21 13:40:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905474061] [2023-12-21 13:40:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905474061] [2023-12-21 13:40:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905474061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:46,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:46,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364690822] [2023-12-21 13:40:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:46,715 INFO L87 Difference]: Start difference. First operand 19014 states and 29554 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:47,181 INFO L93 Difference]: Finished difference Result 56571 states and 88039 transitions. [2023-12-21 13:40:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:47,275 INFO L225 Difference]: With dead ends: 56571 [2023-12-21 13:40:47,275 INFO L226 Difference]: Without dead ends: 37624 [2023-12-21 13:40:47,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:47,317 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1428 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:47,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 353 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:40:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37624 states. [2023-12-21 13:40:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37624 to 37622. [2023-12-21 13:40:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37622 states, 37621 states have (on average 1.5480449748810505) internal successors, (58239), 37621 states have internal predecessors, (58239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37622 states to 37622 states and 58239 transitions. [2023-12-21 13:40:48,163 INFO L78 Accepts]: Start accepts. Automaton has 37622 states and 58239 transitions. Word has length 98 [2023-12-21 13:40:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:48,163 INFO L495 AbstractCegarLoop]: Abstraction has 37622 states and 58239 transitions. [2023-12-21 13:40:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 37622 states and 58239 transitions. [2023-12-21 13:40:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:48,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:48,171 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] [2023-12-21 13:40:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:40:48,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1573705329, now seen corresponding path program 1 times [2023-12-21 13:40:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119566270] [2023-12-21 13:40:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119566270] [2023-12-21 13:40:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119566270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461854616] [2023-12-21 13:40:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:48,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:48,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:48,440 INFO L87 Difference]: Start difference. First operand 37622 states and 58239 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:49,126 INFO L93 Difference]: Finished difference Result 107194 states and 166075 transitions. [2023-12-21 13:40:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:40:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:49,425 INFO L225 Difference]: With dead ends: 107194 [2023-12-21 13:40:49,425 INFO L226 Difference]: Without dead ends: 69623 [2023-12-21 13:40:49,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:40:49,504 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1454 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:49,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 351 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:40:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69623 states. [2023-12-21 13:40:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69623 to 69621. [2023-12-21 13:40:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69621 states, 69620 states have (on average 1.5395575983912668) internal successors, (107184), 69620 states have internal predecessors, (107184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69621 states to 69621 states and 107184 transitions. [2023-12-21 13:40:51,002 INFO L78 Accepts]: Start accepts. Automaton has 69621 states and 107184 transitions. Word has length 98 [2023-12-21 13:40:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:51,002 INFO L495 AbstractCegarLoop]: Abstraction has 69621 states and 107184 transitions. [2023-12-21 13:40:51,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 69621 states and 107184 transitions. [2023-12-21 13:40:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:40:51,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:51,015 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] [2023-12-21 13:40:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:40:51,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2041530960, now seen corresponding path program 1 times [2023-12-21 13:40:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73449853] [2023-12-21 13:40:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:51,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73449853] [2023-12-21 13:40:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73449853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:51,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:51,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:40:51,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401068032] [2023-12-21 13:40:51,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:51,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:40:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:40:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:40:51,437 INFO L87 Difference]: Start difference. First operand 69621 states and 107184 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:52,142 INFO L93 Difference]: Finished difference Result 138871 states and 213137 transitions. [2023-12-21 13:40:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:40:52,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 13:40:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:52,484 INFO L225 Difference]: With dead ends: 138871 [2023-12-21 13:40:52,485 INFO L226 Difference]: Without dead ends: 138869 [2023-12-21 13:40:52,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:40:52,554 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 360 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:52,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1468 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:40:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138869 states. [2023-12-21 13:40:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138869 to 71029. [2023-12-21 13:40:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71029 states, 71028 states have (on average 1.5288618572957144) internal successors, (108592), 71028 states have internal predecessors, (108592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71029 states to 71029 states and 108592 transitions. [2023-12-21 13:40:54,085 INFO L78 Accepts]: Start accepts. Automaton has 71029 states and 108592 transitions. Word has length 99 [2023-12-21 13:40:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:54,086 INFO L495 AbstractCegarLoop]: Abstraction has 71029 states and 108592 transitions. [2023-12-21 13:40:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand 71029 states and 108592 transitions. [2023-12-21 13:40:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:40:54,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:54,101 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] [2023-12-21 13:40:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:40:54,101 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:54,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1481282124, now seen corresponding path program 1 times [2023-12-21 13:40:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211719386] [2023-12-21 13:40:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:54,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211719386] [2023-12-21 13:40:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211719386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:54,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:54,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:40:54,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451485673] [2023-12-21 13:40:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:54,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:40:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:40:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:40:54,559 INFO L87 Difference]: Start difference. First operand 71029 states and 108592 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:55,422 INFO L93 Difference]: Finished difference Result 202009 states and 308082 transitions. [2023-12-21 13:40:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:40:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 13:40:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:55,726 INFO L225 Difference]: With dead ends: 202009 [2023-12-21 13:40:55,726 INFO L226 Difference]: Without dead ends: 132759 [2023-12-21 13:40:55,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:40:55,788 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 248 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:55,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1004 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:40:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132759 states. [2023-12-21 13:40:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132759 to 132757. [2023-12-21 13:40:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132757 states, 132756 states have (on average 1.5174907348820392) internal successors, (201456), 132756 states have internal predecessors, (201456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132757 states to 132757 states and 201456 transitions. [2023-12-21 13:40:58,077 INFO L78 Accepts]: Start accepts. Automaton has 132757 states and 201456 transitions. Word has length 100 [2023-12-21 13:40:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:58,077 INFO L495 AbstractCegarLoop]: Abstraction has 132757 states and 201456 transitions. [2023-12-21 13:40:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 132757 states and 201456 transitions. [2023-12-21 13:40:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:40:58,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:58,116 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] [2023-12-21 13:40:58,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:40:58,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:58,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:58,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1034358051, now seen corresponding path program 1 times [2023-12-21 13:40:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041494101] [2023-12-21 13:40:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041494101] [2023-12-21 13:40:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041494101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:58,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:58,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:40:58,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947705551] [2023-12-21 13:40:58,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:58,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:40:58,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:40:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:40:58,242 INFO L87 Difference]: Start difference. First operand 132757 states and 201456 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:59,477 INFO L93 Difference]: Finished difference Result 307475 states and 466740 transitions. [2023-12-21 13:40:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:40:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:40:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:40:59,785 INFO L225 Difference]: With dead ends: 307475 [2023-12-21 13:40:59,786 INFO L226 Difference]: Without dead ends: 185811 [2023-12-21 13:40:59,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:40:59,847 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 259 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:40:59,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 683 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:40:59,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185811 states. [2023-12-21 13:41:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185811 to 185489. [2023-12-21 13:41:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185489 states, 185488 states have (on average 1.507768696627275) internal successors, (279673), 185488 states have internal predecessors, (279673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185489 states to 185489 states and 279673 transitions. [2023-12-21 13:41:02,722 INFO L78 Accepts]: Start accepts. Automaton has 185489 states and 279673 transitions. Word has length 101 [2023-12-21 13:41:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:02,722 INFO L495 AbstractCegarLoop]: Abstraction has 185489 states and 279673 transitions. [2023-12-21 13:41:02,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 185489 states and 279673 transitions. [2023-12-21 13:41:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:02,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:02,740 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] [2023-12-21 13:41:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:41:02,741 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:02,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash -309913570, now seen corresponding path program 1 times [2023-12-21 13:41:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364317220] [2023-12-21 13:41:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364317220] [2023-12-21 13:41:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364317220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:02,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:02,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033719722] [2023-12-21 13:41:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:02,814 INFO L87 Difference]: Start difference. First operand 185489 states and 279673 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:04,750 INFO L93 Difference]: Finished difference Result 422265 states and 635721 transitions. [2023-12-21 13:41:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:05,210 INFO L225 Difference]: With dead ends: 422265 [2023-12-21 13:41:05,211 INFO L226 Difference]: Without dead ends: 248297 [2023-12-21 13:41:05,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:05,303 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 247 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 681 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248297 states. [2023-12-21 13:41:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248297 to 247046. [2023-12-21 13:41:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247046 states, 247045 states have (on average 1.4906231658199922) internal successors, (368251), 247045 states have internal predecessors, (368251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247046 states to 247046 states and 368251 transitions. [2023-12-21 13:41:09,438 INFO L78 Accepts]: Start accepts. Automaton has 247046 states and 368251 transitions. Word has length 101 [2023-12-21 13:41:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:09,438 INFO L495 AbstractCegarLoop]: Abstraction has 247046 states and 368251 transitions. [2023-12-21 13:41:09,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 247046 states and 368251 transitions. [2023-12-21 13:41:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:09,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:09,461 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] [2023-12-21 13:41:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:41:09,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:09,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1276396829, now seen corresponding path program 1 times [2023-12-21 13:41:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678600956] [2023-12-21 13:41:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:09,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678600956] [2023-12-21 13:41:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678600956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:09,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735440216] [2023-12-21 13:41:09,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:09,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:09,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:09,932 INFO L87 Difference]: Start difference. First operand 247046 states and 368251 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:11,732 INFO L93 Difference]: Finished difference Result 402410 states and 599467 transitions. [2023-12-21 13:41:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:12,256 INFO L225 Difference]: With dead ends: 402410 [2023-12-21 13:41:12,256 INFO L226 Difference]: Without dead ends: 293320 [2023-12-21 13:41:12,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:12,384 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 215 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293320 states. [2023-12-21 13:41:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293320 to 291006. [2023-12-21 13:41:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291006 states, 291005 states have (on average 1.4722805450078178) internal successors, (428441), 291005 states have internal predecessors, (428441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291006 states to 291006 states and 428441 transitions. [2023-12-21 13:41:17,042 INFO L78 Accepts]: Start accepts. Automaton has 291006 states and 428441 transitions. Word has length 101 [2023-12-21 13:41:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:17,043 INFO L495 AbstractCegarLoop]: Abstraction has 291006 states and 428441 transitions. [2023-12-21 13:41:17,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 291006 states and 428441 transitions. [2023-12-21 13:41:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:17,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:17,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:41:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:41:17,064 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:17,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1715412600, now seen corresponding path program 1 times [2023-12-21 13:41:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:17,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755859425] [2023-12-21 13:41:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:17,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:17,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755859425] [2023-12-21 13:41:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755859425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715317453] [2023-12-21 13:41:17,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:17,129 INFO L87 Difference]: Start difference. First operand 291006 states and 428441 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:18,613 INFO L93 Difference]: Finished difference Result 378854 states and 556415 transitions. [2023-12-21 13:41:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:18,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:19,722 INFO L225 Difference]: With dead ends: 378854 [2023-12-21 13:41:19,723 INFO L226 Difference]: Without dead ends: 298788 [2023-12-21 13:41:19,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:19,902 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 207 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:19,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 680 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298788 states. [2023-12-21 13:41:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298788 to 273946. [2023-12-21 13:41:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273946 states, 273945 states have (on average 1.4533318731862235) internal successors, (398133), 273945 states have internal predecessors, (398133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273946 states to 273946 states and 398133 transitions. [2023-12-21 13:41:24,610 INFO L78 Accepts]: Start accepts. Automaton has 273946 states and 398133 transitions. Word has length 101 [2023-12-21 13:41:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:24,611 INFO L495 AbstractCegarLoop]: Abstraction has 273946 states and 398133 transitions. [2023-12-21 13:41:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 273946 states and 398133 transitions. [2023-12-21 13:41:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:24,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:24,631 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] [2023-12-21 13:41:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:41:24,631 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:24,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1729867518, now seen corresponding path program 1 times [2023-12-21 13:41:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:24,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203324181] [2023-12-21 13:41:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:24,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203324181] [2023-12-21 13:41:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203324181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:25,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:41:25,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421413742] [2023-12-21 13:41:25,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:25,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:25,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:25,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:25,258 INFO L87 Difference]: Start difference. First operand 273946 states and 398133 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:28,145 INFO L93 Difference]: Finished difference Result 743535 states and 1086953 transitions. [2023-12-21 13:41:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:41:28,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:28,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:29,920 INFO L225 Difference]: With dead ends: 743535 [2023-12-21 13:41:29,921 INFO L226 Difference]: Without dead ends: 650545 [2023-12-21 13:41:30,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:30,139 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 2713 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:30,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2713 Valid, 2560 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650545 states. [2023-12-21 13:41:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650545 to 366240. [2023-12-21 13:41:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366240 states, 366239 states have (on average 1.4539876965588046) internal successors, (532507), 366239 states have internal predecessors, (532507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366240 states to 366240 states and 532507 transitions. [2023-12-21 13:41:37,328 INFO L78 Accepts]: Start accepts. Automaton has 366240 states and 532507 transitions. Word has length 101 [2023-12-21 13:41:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:37,329 INFO L495 AbstractCegarLoop]: Abstraction has 366240 states and 532507 transitions. [2023-12-21 13:41:37,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 366240 states and 532507 transitions. [2023-12-21 13:41:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:37,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:37,348 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] [2023-12-21 13:41:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:41:37,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:37,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash 535650301, now seen corresponding path program 1 times [2023-12-21 13:41:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754994871] [2023-12-21 13:41:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754994871] [2023-12-21 13:41:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754994871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:37,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:37,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:37,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534170614] [2023-12-21 13:41:37,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:37,857 INFO L87 Difference]: Start difference. First operand 366240 states and 532507 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:40,798 INFO L93 Difference]: Finished difference Result 807771 states and 1171488 transitions. [2023-12-21 13:41:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:42,028 INFO L225 Difference]: With dead ends: 807771 [2023-12-21 13:41:42,029 INFO L226 Difference]: Without dead ends: 483822 [2023-12-21 13:41:42,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:42,711 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 233 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:42,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 675 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483822 states. [2023-12-21 13:41:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483822 to 481164. [2023-12-21 13:41:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481164 states, 481163 states have (on average 1.4313236886460514) internal successors, (688700), 481163 states have internal predecessors, (688700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481164 states to 481164 states and 688700 transitions. [2023-12-21 13:41:51,327 INFO L78 Accepts]: Start accepts. Automaton has 481164 states and 688700 transitions. Word has length 101 [2023-12-21 13:41:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:51,328 INFO L495 AbstractCegarLoop]: Abstraction has 481164 states and 688700 transitions. [2023-12-21 13:41:51,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 481164 states and 688700 transitions. [2023-12-21 13:41:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:51,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:51,358 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] [2023-12-21 13:41:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:41:51,359 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 669149437, now seen corresponding path program 1 times [2023-12-21 13:41:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222558259] [2023-12-21 13:41:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222558259] [2023-12-21 13:41:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222558259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:41:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128006695] [2023-12-21 13:41:51,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:51,528 INFO L87 Difference]: Start difference. First operand 481164 states and 688700 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:56,420 INFO L93 Difference]: Finished difference Result 974042 states and 1400984 transitions. [2023-12-21 13:41:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:41:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:41:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:58,815 INFO L225 Difference]: With dead ends: 974042 [2023-12-21 13:41:58,815 INFO L226 Difference]: Without dead ends: 911310 [2023-12-21 13:41:59,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:59,019 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 3134 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3134 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:59,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3134 Valid, 2226 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:42:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911310 states. [2023-12-21 13:42:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911310 to 543230. [2023-12-21 13:42:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543230 states, 543229 states have (on average 1.4314478792553416) internal successors, (777604), 543229 states have internal predecessors, (777604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543230 states to 543230 states and 777604 transitions. [2023-12-21 13:42:11,219 INFO L78 Accepts]: Start accepts. Automaton has 543230 states and 777604 transitions. Word has length 101 [2023-12-21 13:42:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:11,219 INFO L495 AbstractCegarLoop]: Abstraction has 543230 states and 777604 transitions. [2023-12-21 13:42:11,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 543230 states and 777604 transitions. [2023-12-21 13:42:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:42:11,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:11,307 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] [2023-12-21 13:42:11,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:42:11,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:11,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash 461009224, now seen corresponding path program 1 times [2023-12-21 13:42:11,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:11,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189558167] [2023-12-21 13:42:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:11,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189558167] [2023-12-21 13:42:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189558167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:42:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596892603] [2023-12-21 13:42:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:42:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:42:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:42:11,545 INFO L87 Difference]: Start difference. First operand 543230 states and 777604 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:16,411 INFO L93 Difference]: Finished difference Result 966608 states and 1389500 transitions. [2023-12-21 13:42:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:42:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:42:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:19,612 INFO L225 Difference]: With dead ends: 966608 [2023-12-21 13:42:19,612 INFO L226 Difference]: Without dead ends: 938796 [2023-12-21 13:42:19,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:42:19,799 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 2855 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:19,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2855 Valid, 2421 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:42:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938796 states. [2023-12-21 13:42:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938796 to 570716. [2023-12-21 13:42:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570716 states, 570715 states have (on average 1.4315796851318083) internal successors, (817024), 570715 states have internal predecessors, (817024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570716 states to 570716 states and 817024 transitions. [2023-12-21 13:42:32,542 INFO L78 Accepts]: Start accepts. Automaton has 570716 states and 817024 transitions. Word has length 101 [2023-12-21 13:42:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:32,542 INFO L495 AbstractCegarLoop]: Abstraction has 570716 states and 817024 transitions. [2023-12-21 13:42:32,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 570716 states and 817024 transitions. [2023-12-21 13:42:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:42:32,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:32,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:42:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:42:32,577 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:32,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2073263075, now seen corresponding path program 1 times [2023-12-21 13:42:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:32,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744903660] [2023-12-21 13:42:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:32,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744903660] [2023-12-21 13:42:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744903660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:42:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859847642] [2023-12-21 13:42:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:32,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:42:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:42:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:42:32,863 INFO L87 Difference]: Start difference. First operand 570716 states and 817024 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:38,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:42:38,756 INFO L93 Difference]: Finished difference Result 1208171 states and 1738151 transitions. [2023-12-21 13:42:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:42:38,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:42:38,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:42:41,279 INFO L225 Difference]: With dead ends: 1208171 [2023-12-21 13:42:41,279 INFO L226 Difference]: Without dead ends: 1067055 [2023-12-21 13:42:41,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:42:41,523 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 2581 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:42:41,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 2874 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:42:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067055 states. [2023-12-21 13:42:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067055 to 687799. [2023-12-21 13:42:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687799 states, 687798 states have (on average 1.4323057060357838) internal successors, (985137), 687798 states have internal predecessors, (985137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687799 states to 687799 states and 985137 transitions. [2023-12-21 13:42:56,605 INFO L78 Accepts]: Start accepts. Automaton has 687799 states and 985137 transitions. Word has length 101 [2023-12-21 13:42:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:42:56,605 INFO L495 AbstractCegarLoop]: Abstraction has 687799 states and 985137 transitions. [2023-12-21 13:42:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:42:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 687799 states and 985137 transitions. [2023-12-21 13:42:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:42:56,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:42:56,636 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] [2023-12-21 13:42:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:42:56,636 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:42:56,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:42:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1425889186, now seen corresponding path program 1 times [2023-12-21 13:42:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:42:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801308154] [2023-12-21 13:42:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:42:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:42:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:42:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:42:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:42:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801308154] [2023-12-21 13:42:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801308154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:42:56,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:42:56,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:42:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121760086] [2023-12-21 13:42:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:42:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:42:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:42:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:42:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:42:56,786 INFO L87 Difference]: Start difference. First operand 687799 states and 985137 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:02,106 INFO L93 Difference]: Finished difference Result 1368518 states and 1967660 transitions. [2023-12-21 13:43:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:43:02,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:43:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:06,520 INFO L225 Difference]: With dead ends: 1368518 [2023-12-21 13:43:06,520 INFO L226 Difference]: Without dead ends: 1206570 [2023-12-21 13:43:07,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:43:07,048 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 2693 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:07,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 2983 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206570 states. [2023-12-21 13:43:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206570 to 780996. [2023-12-21 13:43:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780996 states, 780995 states have (on average 1.433009174194457) internal successors, (1119173), 780995 states have internal predecessors, (1119173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780996 states to 780996 states and 1119173 transitions. [2023-12-21 13:43:21,793 INFO L78 Accepts]: Start accepts. Automaton has 780996 states and 1119173 transitions. Word has length 101 [2023-12-21 13:43:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 780996 states and 1119173 transitions. [2023-12-21 13:43:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 780996 states and 1119173 transitions. [2023-12-21 13:43:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:43:21,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:21,823 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] [2023-12-21 13:43:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:43:21,823 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:21,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1082247363, now seen corresponding path program 1 times [2023-12-21 13:43:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526834534] [2023-12-21 13:43:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:22,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:22,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526834534] [2023-12-21 13:43:22,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526834534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:22,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:22,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:43:22,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695795772] [2023-12-21 13:43:22,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:22,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:43:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:43:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:43:22,518 INFO L87 Difference]: Start difference. First operand 780996 states and 1119173 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:28,799 INFO L93 Difference]: Finished difference Result 1488503 states and 2138766 transitions. [2023-12-21 13:43:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:43:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-21 13:43:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:43:31,574 INFO L225 Difference]: With dead ends: 1488503 [2023-12-21 13:43:31,575 INFO L226 Difference]: Without dead ends: 1341287 [2023-12-21 13:43:32,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:43:32,293 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 2704 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:43:32,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 2487 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:43:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341287 states. [2023-12-21 13:43:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341287 to 845965. [2023-12-21 13:43:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845965 states, 845964 states have (on average 1.4332465684118947) internal successors, (1212475), 845964 states have internal predecessors, (1212475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845965 states to 845965 states and 1212475 transitions. [2023-12-21 13:43:49,284 INFO L78 Accepts]: Start accepts. Automaton has 845965 states and 1212475 transitions. Word has length 101 [2023-12-21 13:43:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:43:49,284 INFO L495 AbstractCegarLoop]: Abstraction has 845965 states and 1212475 transitions. [2023-12-21 13:43:49,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 845965 states and 1212475 transitions. [2023-12-21 13:43:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:43:49,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:43:49,337 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] [2023-12-21 13:43:49,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:43:49,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:43:49,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:43:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash 842331549, now seen corresponding path program 1 times [2023-12-21 13:43:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:43:49,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785182251] [2023-12-21 13:43:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:43:49,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:43:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:43:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:43:49,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:43:49,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785182251] [2023-12-21 13:43:49,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785182251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:43:49,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:43:49,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:43:49,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80987864] [2023-12-21 13:43:49,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:43:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:43:49,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:43:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:43:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:43:49,461 INFO L87 Difference]: Start difference. First operand 845965 states and 1212475 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:43:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:43:57,605 INFO L93 Difference]: Finished difference Result 1668909 states and 2385419 transitions. [2023-12-21 13:43:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:43:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-21 13:43:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:00,890 INFO L225 Difference]: With dead ends: 1668909 [2023-12-21 13:44:00,891 INFO L226 Difference]: Without dead ends: 972471 [2023-12-21 13:44:01,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:01,915 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 218 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:01,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 814 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972471 states. [2023-12-21 13:44:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972471 to 882427. [2023-12-21 13:44:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882427 states, 882426 states have (on average 1.4081362063221166) internal successors, (1242576), 882426 states have internal predecessors, (1242576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882427 states to 882427 states and 1242576 transitions. [2023-12-21 13:44:20,962 INFO L78 Accepts]: Start accepts. Automaton has 882427 states and 1242576 transitions. Word has length 104 [2023-12-21 13:44:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:20,963 INFO L495 AbstractCegarLoop]: Abstraction has 882427 states and 1242576 transitions. [2023-12-21 13:44:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:44:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 882427 states and 1242576 transitions. [2023-12-21 13:44:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:44:21,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:21,062 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] [2023-12-21 13:44:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:44:21,063 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:21,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1218745015, now seen corresponding path program 1 times [2023-12-21 13:44:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:21,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139111684] [2023-12-21 13:44:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139111684] [2023-12-21 13:44:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139111684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:21,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:44:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643147399] [2023-12-21 13:44:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:44:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:44:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:44:21,312 INFO L87 Difference]: Start difference. First operand 882427 states and 1242576 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)