/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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:41:42,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:41:42,347 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 13:41:42,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:41:42,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:41:42,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:41:42,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:41:42,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:41:42,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:41:42,387 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:41:42,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:41:42,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:41:42,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:41:42,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:41:42,389 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:41:42,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:41:42,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:41:42,389 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:41:42,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:41:42,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:41:42,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:41:42,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:41:42,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:41:42,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:41:42,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:41:42,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:41:42,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:41:42,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:41:42,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:41:42,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:41:42,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:41:42,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:41:42,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:41:42,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:41:42,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:41:42,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:41:42,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:41:42,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:41:42,653 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:41:42,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:41:43,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:41:43,926 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:41:43,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:41:43,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484e6f0bf/b66b810b7c8f43a48805ad25149aaf3c/FLAG3228ae7dd [2023-12-21 13:41:43,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484e6f0bf/b66b810b7c8f43a48805ad25149aaf3c [2023-12-21 13:41:43,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:41:43,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:41:43,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:41:43,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:41:43,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:41:43,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:43" (1/1) ... [2023-12-21 13:41:43,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1b3eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:43, skipping insertion in model container [2023-12-21 13:41:43,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:43" (1/1) ... [2023-12-21 13:41:43,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:41:44,195 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7182,7195] [2023-12-21 13:41:44,210 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9513,9526] [2023-12-21 13:41:44,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:41:44,237 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:41:44,292 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7182,7195] [2023-12-21 13:41:44,298 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9513,9526] [2023-12-21 13:41:44,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:41:44,320 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:41:44,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44 WrapperNode [2023-12-21 13:41:44,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:41:44,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:41:44,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:41:44,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:41:44,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,356 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 504 [2023-12-21 13:41:44,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:41:44,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:41:44,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:41:44,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:41:44,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,387 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 13:41:44,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:41:44,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:41:44,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:41:44,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:41:44,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (1/1) ... [2023-12-21 13:41:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:41:44,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:41:44,442 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 13:41:44,460 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 13:41:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:41:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:41:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:41:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:41:44,567 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:41:44,568 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:41:45,001 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:41:45,023 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:41:45,024 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:41:45,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:45 BoogieIcfgContainer [2023-12-21 13:41:45,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:41:45,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:41:45,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:41:45,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:41:45,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:41:43" (1/3) ... [2023-12-21 13:41:45,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5175a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:45, skipping insertion in model container [2023-12-21 13:41:45,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:44" (2/3) ... [2023-12-21 13:41:45,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5175a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:45, skipping insertion in model container [2023-12-21 13:41:45,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:45" (3/3) ... [2023-12-21 13:41:45,034 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:41:45,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:41:45,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 13:41:45,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:41:45,097 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;@32de6906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:41:45,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 13:41:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 101 states have (on average 1.7722772277227723) internal successors, (179), 103 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:41:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 13:41:45,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:45,112 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] [2023-12-21 13:41:45,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:45,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1236458848, now seen corresponding path program 1 times [2023-12-21 13:41:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306352747] [2023-12-21 13:41:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:45,531 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 13:41:45,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:45,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306352747] [2023-12-21 13:41:45,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306352747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:45,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:45,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:45,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404143856] [2023-12-21 13:41:45,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:45,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:45,559 INFO L87 Difference]: Start difference. First operand has 104 states, 101 states have (on average 1.7722772277227723) internal successors, (179), 103 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 13:41:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:45,780 INFO L93 Difference]: Finished difference Result 408 states and 655 transitions. [2023-12-21 13:41:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:41:45,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-21 13:41:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:45,790 INFO L225 Difference]: With dead ends: 408 [2023-12-21 13:41:45,790 INFO L226 Difference]: Without dead ends: 352 [2023-12-21 13:41:45,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:45,794 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 591 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:45,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 742 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-21 13:41:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 154. [2023-12-21 13:41:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.4342105263157894) internal successors, (218), 153 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 13:41:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 218 transitions. [2023-12-21 13:41:45,846 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 218 transitions. Word has length 47 [2023-12-21 13:41:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:45,846 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 218 transitions. [2023-12-21 13:41:45,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 13:41:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 218 transitions. [2023-12-21 13:41:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:41:45,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:45,847 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] [2023-12-21 13:41:45,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:41:45,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:45,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash 149827959, now seen corresponding path program 1 times [2023-12-21 13:41:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707779803] [2023-12-21 13:41:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:45,943 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 13:41:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707779803] [2023-12-21 13:41:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707779803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149574048] [2023-12-21 13:41:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:45,950 INFO L87 Difference]: Start difference. First operand 154 states and 218 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:41:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:45,979 INFO L93 Difference]: Finished difference Result 243 states and 351 transitions. [2023-12-21 13:41:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-21 13:41:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:45,981 INFO L225 Difference]: With dead ends: 243 [2023-12-21 13:41:45,981 INFO L226 Difference]: Without dead ends: 158 [2023-12-21 13:41:45,982 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 13:41:45,983 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:45,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 299 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-21 13:41:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-12-21 13:41:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.422077922077922) internal successors, (219), 155 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 13:41:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 219 transitions. [2023-12-21 13:41:45,989 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 219 transitions. Word has length 48 [2023-12-21 13:41:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:45,990 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 219 transitions. [2023-12-21 13:41:45,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:41:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 219 transitions. [2023-12-21 13:41:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:45,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:45,991 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] [2023-12-21 13:41:45,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:41:45,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 967473249, now seen corresponding path program 1 times [2023-12-21 13:41:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800484204] [2023-12-21 13:41:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:46,129 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 13:41:46,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800484204] [2023-12-21 13:41:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800484204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:46,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747923122] [2023-12-21 13:41:46,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:46,135 INFO L87 Difference]: Start difference. First operand 156 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:46,203 INFO L93 Difference]: Finished difference Result 469 states and 689 transitions. [2023-12-21 13:41:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:41:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:46,210 INFO L225 Difference]: With dead ends: 469 [2023-12-21 13:41:46,210 INFO L226 Difference]: Without dead ends: 387 [2023-12-21 13:41:46,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:41:46,211 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 298 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:46,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 530 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-21 13:41:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 247. [2023-12-21 13:41:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.4612244897959183) internal successors, (358), 246 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 13:41:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 358 transitions. [2023-12-21 13:41:46,219 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 358 transitions. Word has length 49 [2023-12-21 13:41:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:46,219 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 358 transitions. [2023-12-21 13:41:46,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 358 transitions. [2023-12-21 13:41:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:46,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:46,220 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] [2023-12-21 13:41:46,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:41:46,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:46,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1095295369, now seen corresponding path program 1 times [2023-12-21 13:41:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926358012] [2023-12-21 13:41:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:46,346 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 13:41:46,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:46,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926358012] [2023-12-21 13:41:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926358012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:46,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:46,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880348677] [2023-12-21 13:41:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:46,349 INFO L87 Difference]: Start difference. First operand 247 states and 358 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:46,416 INFO L93 Difference]: Finished difference Result 555 states and 820 transitions. [2023-12-21 13:41:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:41:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:46,419 INFO L225 Difference]: With dead ends: 555 [2023-12-21 13:41:46,419 INFO L226 Difference]: Without dead ends: 473 [2023-12-21 13:41:46,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:41:46,421 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 356 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:46,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 535 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-21 13:41:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 375. [2023-12-21 13:41:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 373 states have (on average 1.479892761394102) internal successors, (552), 374 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 13:41:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 552 transitions. [2023-12-21 13:41:46,440 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 552 transitions. Word has length 49 [2023-12-21 13:41:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:46,440 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 552 transitions. [2023-12-21 13:41:46,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 552 transitions. [2023-12-21 13:41:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:41:46,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:46,444 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] [2023-12-21 13:41:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:41:46,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:46,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1600326517, now seen corresponding path program 1 times [2023-12-21 13:41:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709513710] [2023-12-21 13:41:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:46,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:46,543 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 13:41:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709513710] [2023-12-21 13:41:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709513710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:46,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:41:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915177908] [2023-12-21 13:41:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:46,546 INFO L87 Difference]: Start difference. First operand 375 states and 552 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:46,620 INFO L93 Difference]: Finished difference Result 646 states and 959 transitions. [2023-12-21 13:41:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:41:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:46,624 INFO L225 Difference]: With dead ends: 646 [2023-12-21 13:41:46,624 INFO L226 Difference]: Without dead ends: 564 [2023-12-21 13:41:46,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:41:46,626 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 355 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:46,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 569 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-21 13:41:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 466. [2023-12-21 13:41:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4892241379310345) internal successors, (691), 465 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 13:41:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 691 transitions. [2023-12-21 13:41:46,654 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 691 transitions. Word has length 49 [2023-12-21 13:41:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:46,654 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 691 transitions. [2023-12-21 13:41:46,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:41:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 691 transitions. [2023-12-21 13:41:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 13:41:46,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:46,657 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] [2023-12-21 13:41:46,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:41:46,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:46,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash -247753770, now seen corresponding path program 1 times [2023-12-21 13:41:46,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:46,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611696779] [2023-12-21 13:41:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:46,719 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 13:41:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611696779] [2023-12-21 13:41:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611696779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:46,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:46,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959720435] [2023-12-21 13:41:46,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:46,721 INFO L87 Difference]: Start difference. First operand 466 states and 691 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:41:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:46,782 INFO L93 Difference]: Finished difference Result 902 states and 1349 transitions. [2023-12-21 13:41:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 13:41:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:46,784 INFO L225 Difference]: With dead ends: 902 [2023-12-21 13:41:46,784 INFO L226 Difference]: Without dead ends: 466 [2023-12-21 13:41:46,785 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 13:41:46,785 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 358 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:46,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 94 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-21 13:41:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-21 13:41:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4676724137931034) internal successors, (681), 465 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 13:41:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 681 transitions. [2023-12-21 13:41:46,793 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 681 transitions. Word has length 50 [2023-12-21 13:41:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:46,793 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 681 transitions. [2023-12-21 13:41:46,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:41:46,793 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 681 transitions. [2023-12-21 13:41:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:41:46,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:46,794 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] [2023-12-21 13:41:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:41:46,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:46,794 INFO L85 PathProgramCache]: Analyzing trace with hash 381620314, now seen corresponding path program 1 times [2023-12-21 13:41:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:46,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749970938] [2023-12-21 13:41:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:46,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:46,860 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 13:41:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749970938] [2023-12-21 13:41:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749970938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346718353] [2023-12-21 13:41:46,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:46,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:46,861 INFO L87 Difference]: Start difference. First operand 466 states and 681 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:41:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:46,930 INFO L93 Difference]: Finished difference Result 906 states and 1334 transitions. [2023-12-21 13:41:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 13:41:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:46,932 INFO L225 Difference]: With dead ends: 906 [2023-12-21 13:41:46,932 INFO L226 Difference]: Without dead ends: 466 [2023-12-21 13:41:46,934 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 13:41:46,935 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 363 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:46,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 86 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-21 13:41:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-21 13:41:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4461206896551724) internal successors, (671), 465 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 13:41:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 671 transitions. [2023-12-21 13:41:46,943 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 671 transitions. Word has length 51 [2023-12-21 13:41:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:46,944 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 671 transitions. [2023-12-21 13:41:46,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:41:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 671 transitions. [2023-12-21 13:41:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:41:46,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:46,945 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] [2023-12-21 13:41:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:41:46,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 161554530, now seen corresponding path program 1 times [2023-12-21 13:41:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266859321] [2023-12-21 13:41:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:47,003 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 13:41:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:47,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266859321] [2023-12-21 13:41:47,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266859321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:47,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:47,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46181939] [2023-12-21 13:41:47,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:41:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:41:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:47,005 INFO L87 Difference]: Start difference. First operand 466 states and 671 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 13:41:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:47,094 INFO L93 Difference]: Finished difference Result 1314 states and 1914 transitions. [2023-12-21 13:41:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 13:41:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:47,097 INFO L225 Difference]: With dead ends: 1314 [2023-12-21 13:41:47,097 INFO L226 Difference]: Without dead ends: 870 [2023-12-21 13:41:47,098 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 13:41:47,099 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 544 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:47,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 131 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-21 13:41:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 865. [2023-12-21 13:41:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 863 states have (on average 1.451911935110081) internal successors, (1253), 864 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states 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 13:41:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1253 transitions. [2023-12-21 13:41:47,114 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1253 transitions. Word has length 52 [2023-12-21 13:41:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:47,114 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1253 transitions. [2023-12-21 13:41:47,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 13:41:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1253 transitions. [2023-12-21 13:41:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:41:47,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:47,115 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] [2023-12-21 13:41:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:41:47,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 456972262, now seen corresponding path program 1 times [2023-12-21 13:41:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841478079] [2023-12-21 13:41:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:47,462 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 13:41:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:47,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841478079] [2023-12-21 13:41:47,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841478079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:47,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:47,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:41:47,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143516128] [2023-12-21 13:41:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:47,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:41:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:41:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:41:47,464 INFO L87 Difference]: Start difference. First operand 865 states and 1253 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:41:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:47,838 INFO L93 Difference]: Finished difference Result 2438 states and 3543 transitions. [2023-12-21 13:41:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:41:47,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:41:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:47,842 INFO L225 Difference]: With dead ends: 2438 [2023-12-21 13:41:47,842 INFO L226 Difference]: Without dead ends: 1677 [2023-12-21 13:41:47,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:41:47,844 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 756 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:47,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 366 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-12-21 13:41:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 865. [2023-12-21 13:41:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 863 states have (on average 1.4449594438006952) internal successors, (1247), 864 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 13:41:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1247 transitions. [2023-12-21 13:41:47,861 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1247 transitions. Word has length 53 [2023-12-21 13:41:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:47,861 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1247 transitions. [2023-12-21 13:41:47,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:41:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1247 transitions. [2023-12-21 13:41:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:41:47,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:47,862 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] [2023-12-21 13:41:47,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:41:47,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:47,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash 124490686, now seen corresponding path program 1 times [2023-12-21 13:41:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356519847] [2023-12-21 13:41:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:47,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:48,088 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 13:41:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356519847] [2023-12-21 13:41:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356519847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:41:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294384589] [2023-12-21 13:41:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:48,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:41:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:41:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:41:48,090 INFO L87 Difference]: Start difference. First operand 865 states and 1247 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:41:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:48,467 INFO L93 Difference]: Finished difference Result 2081 states and 3003 transitions. [2023-12-21 13:41:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:41:48,468 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:41:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:48,471 INFO L225 Difference]: With dead ends: 2081 [2023-12-21 13:41:48,471 INFO L226 Difference]: Without dead ends: 1305 [2023-12-21 13:41:48,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:41:48,472 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 985 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:48,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 311 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-21 13:41:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 865. [2023-12-21 13:41:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 863 states have (on average 1.4414831981460023) internal successors, (1244), 864 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states 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 13:41:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1244 transitions. [2023-12-21 13:41:48,489 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1244 transitions. Word has length 53 [2023-12-21 13:41:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:48,489 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1244 transitions. [2023-12-21 13:41:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:41:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1244 transitions. [2023-12-21 13:41:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:41:48,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:48,490 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] [2023-12-21 13:41:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:41:48,490 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:48,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 359546620, now seen corresponding path program 1 times [2023-12-21 13:41:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284791860] [2023-12-21 13:41:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:48,650 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 13:41:48,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:48,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284791860] [2023-12-21 13:41:48,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284791860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:48,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:48,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:41:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611487328] [2023-12-21 13:41:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:41:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:41:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:41:48,652 INFO L87 Difference]: Start difference. First operand 865 states and 1244 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:41:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:48,844 INFO L93 Difference]: Finished difference Result 2390 states and 3482 transitions. [2023-12-21 13:41:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:41:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 13:41:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:48,848 INFO L225 Difference]: With dead ends: 2390 [2023-12-21 13:41:48,848 INFO L226 Difference]: Without dead ends: 1626 [2023-12-21 13:41:48,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-21 13:41:48,850 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 551 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:48,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 307 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2023-12-21 13:41:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 865. [2023-12-21 13:41:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 863 states have (on average 1.440324449594438) internal successors, (1243), 864 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states 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 13:41:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1243 transitions. [2023-12-21 13:41:48,866 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1243 transitions. Word has length 54 [2023-12-21 13:41:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:48,866 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1243 transitions. [2023-12-21 13:41:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 13:41:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1243 transitions. [2023-12-21 13:41:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:41:48,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:48,867 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] [2023-12-21 13:41:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:41:48,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash 568588166, now seen corresponding path program 1 times [2023-12-21 13:41:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374675141] [2023-12-21 13:41:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:49,264 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 13:41:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374675141] [2023-12-21 13:41:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374675141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:49,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:41:49,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414794659] [2023-12-21 13:41:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:49,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:41:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:41:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:41:49,266 INFO L87 Difference]: Start difference. First operand 865 states and 1243 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 13:41:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:49,850 INFO L93 Difference]: Finished difference Result 3395 states and 4980 transitions. [2023-12-21 13:41:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:41:49,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-21 13:41:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:49,858 INFO L225 Difference]: With dead ends: 3395 [2023-12-21 13:41:49,860 INFO L226 Difference]: Without dead ends: 3043 [2023-12-21 13:41:49,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:41:49,863 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1024 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:49,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 781 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-12-21 13:41:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 844. [2023-12-21 13:41:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.4418052256532066) internal successors, (1214), 843 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states 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 13:41:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1214 transitions. [2023-12-21 13:41:49,893 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1214 transitions. Word has length 55 [2023-12-21 13:41:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:49,893 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1214 transitions. [2023-12-21 13:41:49,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 13:41:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1214 transitions. [2023-12-21 13:41:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:41:49,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:49,894 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] [2023-12-21 13:41:49,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:41:49,894 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:49,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -782372312, now seen corresponding path program 1 times [2023-12-21 13:41:49,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:49,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105289925] [2023-12-21 13:41:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:50,356 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 13:41:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105289925] [2023-12-21 13:41:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105289925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:50,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 13:41:50,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702136785] [2023-12-21 13:41:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:50,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:41:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:41:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:41:50,358 INFO L87 Difference]: Start difference. First operand 844 states and 1214 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 13:41:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:51,436 INFO L93 Difference]: Finished difference Result 3399 states and 4981 transitions. [2023-12-21 13:41:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 13:41:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-21 13:41:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:51,443 INFO L225 Difference]: With dead ends: 3399 [2023-12-21 13:41:51,443 INFO L226 Difference]: Without dead ends: 2650 [2023-12-21 13:41:51,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 13:41:51,446 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 463 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:51,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 2773 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:41:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2023-12-21 13:41:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 843. [2023-12-21 13:41:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.4375743162901309) internal successors, (1209), 842 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 13:41:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1209 transitions. [2023-12-21 13:41:51,466 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1209 transitions. Word has length 55 [2023-12-21 13:41:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1209 transitions. [2023-12-21 13:41:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 13:41:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1209 transitions. [2023-12-21 13:41:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:41:51,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:51,467 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] [2023-12-21 13:41:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:41:51,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:51,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash -749357809, now seen corresponding path program 1 times [2023-12-21 13:41:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662617669] [2023-12-21 13:41:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:51,833 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 13:41:51,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:51,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662617669] [2023-12-21 13:41:51,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662617669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:51,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:51,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:41:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368507582] [2023-12-21 13:41:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:51,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:41:51,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:41:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:51,834 INFO L87 Difference]: Start difference. First operand 843 states and 1209 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:41:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:52,231 INFO L93 Difference]: Finished difference Result 1916 states and 2790 transitions. [2023-12-21 13:41:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:41:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-21 13:41:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:52,235 INFO L225 Difference]: With dead ends: 1916 [2023-12-21 13:41:52,235 INFO L226 Difference]: Without dead ends: 1563 [2023-12-21 13:41:52,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:41:52,237 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 572 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:52,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 757 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:41:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2023-12-21 13:41:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 815. [2023-12-21 13:41:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 813 states have (on average 1.4428044280442804) internal successors, (1173), 814 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states 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 13:41:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1173 transitions. [2023-12-21 13:41:52,250 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1173 transitions. Word has length 56 [2023-12-21 13:41:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:52,250 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1173 transitions. [2023-12-21 13:41:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:41:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1173 transitions. [2023-12-21 13:41:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:41:52,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:52,250 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] [2023-12-21 13:41:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:41:52,251 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:52,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:52,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1588815950, now seen corresponding path program 1 times [2023-12-21 13:41:52,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:52,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039396346] [2023-12-21 13:41:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:52,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:52,600 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 13:41:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039396346] [2023-12-21 13:41:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039396346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:52,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:52,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:41:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018162110] [2023-12-21 13:41:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:41:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:41:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:41:52,602 INFO L87 Difference]: Start difference. First operand 815 states and 1173 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:41:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:53,342 INFO L93 Difference]: Finished difference Result 3338 states and 4905 transitions. [2023-12-21 13:41:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:41:53,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-21 13:41:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:53,351 INFO L225 Difference]: With dead ends: 3338 [2023-12-21 13:41:53,351 INFO L226 Difference]: Without dead ends: 3001 [2023-12-21 13:41:53,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:41:53,355 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 660 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:53,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1475 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:41:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2023-12-21 13:41:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 799. [2023-12-21 13:41:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 1.4461152882205515) internal successors, (1154), 798 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 13:41:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1154 transitions. [2023-12-21 13:41:53,383 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1154 transitions. Word has length 56 [2023-12-21 13:41:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:53,383 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1154 transitions. [2023-12-21 13:41:53,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 13:41:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1154 transitions. [2023-12-21 13:41:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:41:53,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:53,384 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] [2023-12-21 13:41:53,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:41:53,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:53,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -241009193, now seen corresponding path program 1 times [2023-12-21 13:41:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932268256] [2023-12-21 13:41:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:53,436 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 13:41:53,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:53,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932268256] [2023-12-21 13:41:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932268256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:53,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:53,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246409949] [2023-12-21 13:41:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:53,439 INFO L87 Difference]: Start difference. First operand 799 states and 1154 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:41:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:53,456 INFO L93 Difference]: Finished difference Result 2127 states and 3104 transitions. [2023-12-21 13:41:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:41:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:53,459 INFO L225 Difference]: With dead ends: 2127 [2023-12-21 13:41:53,459 INFO L226 Difference]: Without dead ends: 1405 [2023-12-21 13:41:53,460 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 13:41:53,461 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 50 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:53,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 277 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-12-21 13:41:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2023-12-21 13:41:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 1.4229671897289586) internal successors, (1995), 1402 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 13:41:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1995 transitions. [2023-12-21 13:41:53,481 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1995 transitions. Word has length 76 [2023-12-21 13:41:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:53,481 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1995 transitions. [2023-12-21 13:41:53,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:41:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1995 transitions. [2023-12-21 13:41:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:41:53,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:53,482 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] [2023-12-21 13:41:53,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:41:53,482 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:53,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1600462639, now seen corresponding path program 1 times [2023-12-21 13:41:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359574873] [2023-12-21 13:41:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:53,568 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 13:41:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359574873] [2023-12-21 13:41:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359574873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:53,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429767684] [2023-12-21 13:41:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:53,570 INFO L87 Difference]: Start difference. First operand 1403 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:41:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:53,585 INFO L93 Difference]: Finished difference Result 3569 states and 5099 transitions. [2023-12-21 13:41:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 13:41:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:53,590 INFO L225 Difference]: With dead ends: 3569 [2023-12-21 13:41:53,591 INFO L226 Difference]: Without dead ends: 2243 [2023-12-21 13:41:53,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:53,593 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:53,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2023-12-21 13:41:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2097. [2023-12-21 13:41:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.4079198473282444) internal successors, (2951), 2096 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states 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 13:41:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2951 transitions. [2023-12-21 13:41:53,621 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2951 transitions. Word has length 77 [2023-12-21 13:41:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:53,621 INFO L495 AbstractCegarLoop]: Abstraction has 2097 states and 2951 transitions. [2023-12-21 13:41:53,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:41:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2951 transitions. [2023-12-21 13:41:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:41:53,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:53,622 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] [2023-12-21 13:41:53,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:41:53,622 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:53,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash -575209398, now seen corresponding path program 1 times [2023-12-21 13:41:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:53,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595511475] [2023-12-21 13:41:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:53,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:53,661 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 13:41:53,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:53,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595511475] [2023-12-21 13:41:53,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595511475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:53,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:53,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:41:53,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189713180] [2023-12-21 13:41:53,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:53,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:41:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:41:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:41:53,663 INFO L87 Difference]: Start difference. First operand 2097 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:41:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:53,720 INFO L93 Difference]: Finished difference Result 5484 states and 7733 transitions. [2023-12-21 13:41:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:41:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 13:41:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:53,742 INFO L225 Difference]: With dead ends: 5484 [2023-12-21 13:41:53,742 INFO L226 Difference]: Without dead ends: 3464 [2023-12-21 13:41:53,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:41:53,746 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 223 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:53,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 156 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2023-12-21 13:41:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2067. [2023-12-21 13:41:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2066 states have (on average 1.404646660212972) internal successors, (2902), 2066 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states 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 13:41:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2902 transitions. [2023-12-21 13:41:53,779 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2902 transitions. Word has length 78 [2023-12-21 13:41:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:53,779 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 2902 transitions. [2023-12-21 13:41:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:41:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2902 transitions. [2023-12-21 13:41:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:41:53,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:53,780 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] [2023-12-21 13:41:53,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:41:53,780 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:53,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 398753711, now seen corresponding path program 1 times [2023-12-21 13:41:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919378313] [2023-12-21 13:41:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:53,839 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 13:41:53,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919378313] [2023-12-21 13:41:53,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919378313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:53,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106054268] [2023-12-21 13:41:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:53,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:53,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:53,841 INFO L87 Difference]: Start difference. First operand 2067 states and 2902 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:41:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:53,860 INFO L93 Difference]: Finished difference Result 5855 states and 8190 transitions. [2023-12-21 13:41:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 13:41:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:53,867 INFO L225 Difference]: With dead ends: 5855 [2023-12-21 13:41:53,867 INFO L226 Difference]: Without dead ends: 3853 [2023-12-21 13:41:53,869 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 13:41:53,870 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 49 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:53,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2023-12-21 13:41:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3635. [2023-12-21 13:41:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.3847000550357733) internal successors, (5032), 3634 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states 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 13:41:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5032 transitions. [2023-12-21 13:41:53,919 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5032 transitions. Word has length 78 [2023-12-21 13:41:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:53,919 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5032 transitions. [2023-12-21 13:41:53,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:41:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5032 transitions. [2023-12-21 13:41:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:41:53,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:53,920 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] [2023-12-21 13:41:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:41:53,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:53,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash -718990442, now seen corresponding path program 1 times [2023-12-21 13:41:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:53,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291205136] [2023-12-21 13:41:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291205136] [2023-12-21 13:41:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291205136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:53,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399133274] [2023-12-21 13:41:53,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:53,982 INFO L87 Difference]: Start difference. First operand 3635 states and 5032 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:41:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:54,011 INFO L93 Difference]: Finished difference Result 10343 states and 14202 transitions. [2023-12-21 13:41:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:41:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:54,023 INFO L225 Difference]: With dead ends: 10343 [2023-12-21 13:41:54,023 INFO L226 Difference]: Without dead ends: 6773 [2023-12-21 13:41:54,029 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 13:41:54,030 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:54,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 258 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2023-12-21 13:41:54,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6339. [2023-12-21 13:41:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 6338 states have (on average 1.355317134742821) internal successors, (8590), 6338 states have internal predecessors, (8590), 0 states have call successors, (0), 0 states 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 13:41:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 8590 transitions. [2023-12-21 13:41:54,123 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 8590 transitions. Word has length 79 [2023-12-21 13:41:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:54,123 INFO L495 AbstractCegarLoop]: Abstraction has 6339 states and 8590 transitions. [2023-12-21 13:41:54,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:41:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 8590 transitions. [2023-12-21 13:41:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:41:54,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:54,124 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] [2023-12-21 13:41:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:41:54,124 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -660634110, now seen corresponding path program 1 times [2023-12-21 13:41:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895911472] [2023-12-21 13:41:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:54,284 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 13:41:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895911472] [2023-12-21 13:41:54,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895911472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:54,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:41:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917275402] [2023-12-21 13:41:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:54,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:41:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:41:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:41:54,285 INFO L87 Difference]: Start difference. First operand 6339 states and 8590 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:41:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:54,347 INFO L93 Difference]: Finished difference Result 9916 states and 13345 transitions. [2023-12-21 13:41:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:41:54,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:41:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:54,363 INFO L225 Difference]: With dead ends: 9916 [2023-12-21 13:41:54,363 INFO L226 Difference]: Without dead ends: 9914 [2023-12-21 13:41:54,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:41:54,367 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 196 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:54,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 619 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2023-12-21 13:41:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 6531. [2023-12-21 13:41:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 6530 states have (on average 1.3326186830015314) internal successors, (8702), 6530 states have internal predecessors, (8702), 0 states have call successors, (0), 0 states 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 13:41:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 8702 transitions. [2023-12-21 13:41:54,469 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 8702 transitions. Word has length 80 [2023-12-21 13:41:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:54,469 INFO L495 AbstractCegarLoop]: Abstraction has 6531 states and 8702 transitions. [2023-12-21 13:41:54,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:41:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 8702 transitions. [2023-12-21 13:41:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:41:54,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:54,470 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] [2023-12-21 13:41:54,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:41:54,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:54,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash -755554106, now seen corresponding path program 1 times [2023-12-21 13:41:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164735964] [2023-12-21 13:41:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:54,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164735964] [2023-12-21 13:41:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164735964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:41:54,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:41:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:41:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388447567] [2023-12-21 13:41:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:41:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:41:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:41:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:41:54,505 INFO L87 Difference]: Start difference. First operand 6531 states and 8702 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:41:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:41:54,543 INFO L93 Difference]: Finished difference Result 13243 states and 17668 transitions. [2023-12-21 13:41:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:41:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:41:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:41:54,555 INFO L225 Difference]: With dead ends: 13243 [2023-12-21 13:41:54,555 INFO L226 Difference]: Without dead ends: 6777 [2023-12-21 13:41:54,562 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 13:41:54,563 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 68 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:41:54,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 208 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:41:54,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2023-12-21 13:41:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6775. [2023-12-21 13:41:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 6774 states have (on average 1.3111898435193385) internal successors, (8882), 6774 states have internal predecessors, (8882), 0 states have call successors, (0), 0 states 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 13:41:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 8882 transitions. [2023-12-21 13:41:54,641 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 8882 transitions. Word has length 80 [2023-12-21 13:41:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:41:54,641 INFO L495 AbstractCegarLoop]: Abstraction has 6775 states and 8882 transitions. [2023-12-21 13:41:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:41:54,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 8882 transitions. [2023-12-21 13:41:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:41:54,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:41:54,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:41:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:41:54,643 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:41:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:41:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -913097993, now seen corresponding path program 1 times [2023-12-21 13:41:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:41:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494014704] [2023-12-21 13:41:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:41:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:55,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:41:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494014704] [2023-12-21 13:41:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494014704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:41:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634602164] [2023-12-21 13:41:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:41:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:41:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:41:55,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:41:55,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:41:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:41:55,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 13:41:55,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:41:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:57,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:41:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:41:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634602164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:41:59,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:41:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 20] total 52 [2023-12-21 13:41:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016498070] [2023-12-21 13:41:59,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:41:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 13:41:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:41:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 13:41:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2477, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 13:41:59,587 INFO L87 Difference]: Start difference. First operand 6775 states and 8882 transitions. Second operand has 53 states, 53 states have (on average 5.264150943396227) internal successors, (279), 52 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 13:54:27,504 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 13:54:27,504 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 13:54:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3253 states. [2023-12-21 13:54:28,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3465 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5361483 ImplicationChecksByTransitivity, 686.5s TimeCoverageRelationStatistics Valid=333754, Invalid=10579358, Unknown=0, NotChecked=0, Total=10913112 [2023-12-21 13:54:28,365 INFO L413 NwaCegarLoop]: 2091 mSDtfsCounter, 34267 mSDsluCounter, 49404 mSDsCounter, 0 mSdLazyCounter, 59567 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34267 SdHoareTripleChecker+Valid, 51495 SdHoareTripleChecker+Invalid, 60088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 59567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:54:28,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34267 Valid, 51495 Invalid, 60088 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [521 Valid, 59567 Invalid, 0 Unknown, 0 Unchecked, 44.3s Time] [2023-12-21 13:54:28,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-21 13:54:28,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:54:28,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 13:54:28,571 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (6775states) and FLOYD_HOARE automaton (currently 3253 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-33-2-3-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. [2023-12-21 13:54:28,573 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-21 13:54:28,575 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:54:28,577 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 13:54:28,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:54:28 BoogieIcfgContainer [2023-12-21 13:54:28,578 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 13:54:28,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 13:54:28,582 INFO L158 Benchmark]: Toolchain (without parser) took 764630.98ms. Allocated memory was 310.4MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 260.7MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-21 13:54:28,583 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 143.2MB in the beginning and 143.1MB in the end (delta: 141.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 13:54:28,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.26ms. Allocated memory is still 310.4MB. Free memory was 260.7MB in the beginning and 241.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-21 13:54:28,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.84ms. Allocated memory is still 310.4MB. Free memory was 241.4MB in the beginning and 238.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 13:54:28,588 INFO L158 Benchmark]: Boogie Preprocessor took 49.15ms. Allocated memory is still 310.4MB. Free memory was 238.2MB in the beginning and 235.5MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 13:54:28,588 INFO L158 Benchmark]: RCFGBuilder took 617.46ms. Allocated memory is still 310.4MB. Free memory was 235.1MB in the beginning and 275.5MB in the end (delta: -40.4MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2023-12-21 13:54:28,588 INFO L158 Benchmark]: TraceAbstraction took 763552.77ms. Allocated memory was 310.4MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 274.9MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-21 13:54:28,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 143.2MB in the beginning and 143.1MB in the end (delta: 141.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.26ms. Allocated memory is still 310.4MB. Free memory was 260.7MB in the beginning and 241.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.84ms. Allocated memory is still 310.4MB. Free memory was 241.4MB in the beginning and 238.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.15ms. Allocated memory is still 310.4MB. Free memory was 238.2MB in the beginning and 235.5MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 617.46ms. Allocated memory is still 310.4MB. Free memory was 235.1MB in the beginning and 275.5MB in the end (delta: -40.4MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. * TraceAbstraction took 763552.77ms. Allocated memory was 310.4MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 274.9MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 383]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 383). Cancelled while NwaCegarLoop was constructing difference of abstraction (6775states) and FLOYD_HOARE automaton (currently 3253 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-33-2-3-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 590]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 590). Cancelled while NwaCegarLoop was constructing difference of abstraction (6775states) and FLOYD_HOARE automaton (currently 3253 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-33-2-3-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 763.5s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 753.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42900 SdHoareTripleChecker+Valid, 46.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42900 mSDsluCounter, 63293 SdHoareTripleChecker+Invalid, 41.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57737 mSDsCounter, 585 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63542 IncrementalHoareTripleChecker+Invalid, 64127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 585 mSolverCounterUnsat, 5556 mSDtfsCounter, 63542 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3708 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5361987 ImplicationChecksByTransitivity, 689.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6775occurred in iteration=22, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 15092 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1527 NumberOfCodeBlocks, 1527 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1603 ConstructedInterpolants, 0 QuantifiedInterpolants, 15059 SizeOfPredicates, 13 NumberOfNonLiveVariables, 442 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 25 InterpolantComputations, 22 PerfectInterpolantSequences, 25/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown