/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:07:46,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:07:46,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:07:46,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:07:46,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:07:46,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:07:46,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:07:46,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:07:46,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:07:46,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:07:46,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:07:46,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:07:46,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:07:46,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:07:46,996 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:07:47,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:07:47,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:07:47,003 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:07:47,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:07:47,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:07:47,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:07:47,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:07:47,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:07:47,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:07:47,005 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:07:47,005 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:07:47,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:07:47,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:07:47,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:07:47,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:07:47,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:07:47,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:07:47,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:07:47,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:07:47,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:07:47,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:07:47,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:07:47,008 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:07:47,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:07:47,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:07:47,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:07:47,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:07:47,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:07:47,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:07:48,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:07:48,351 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:07:48,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:07:48,363 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0584e78/487212a536ab42f88e26ddd780fff338/FLAG5167f846e [2023-12-20 03:07:48,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0584e78/487212a536ab42f88e26ddd780fff338 [2023-12-20 03:07:48,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:07:48,377 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:07:48,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:07:48,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:07:48,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:07:48,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1bd133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48, skipping insertion in model container [2023-12-20 03:07:48,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,419 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:07:48,555 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.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2023-12-20 03:07:48,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:07:48,589 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:07:48,622 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.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2023-12-20 03:07:48,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:07:48,640 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:07:48,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48 WrapperNode [2023-12-20 03:07:48,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:07:48,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:07:48,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:07:48,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:07:48,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,668 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 288 [2023-12-20 03:07:48,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:07:48,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:07:48,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:07:48,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:07:48,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,689 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]. [2023-12-20 03:07:48,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:07:48,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:07:48,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:07:48,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:07:48,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (1/1) ... [2023-12-20 03:07:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:07:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:07:48,736 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) [2023-12-20 03:07:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:07:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:07:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:07:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:07:48,744 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 [2023-12-20 03:07:48,854 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:07:48,856 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:07:49,063 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:07:49,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:07:49,087 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:07:49,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:07:49 BoogieIcfgContainer [2023-12-20 03:07:49,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:07:49,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:07:49,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:07:49,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:07:49,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:07:48" (1/3) ... [2023-12-20 03:07:49,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587c9472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:07:49, skipping insertion in model container [2023-12-20 03:07:49,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:07:48" (2/3) ... [2023-12-20 03:07:49,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587c9472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:07:49, skipping insertion in model container [2023-12-20 03:07:49,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:07:49" (3/3) ... [2023-12-20 03:07:49,093 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:07:49,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:07:49,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:07:49,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:07:49,136 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;@45391c0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:07:49,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:07:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 03:07:49,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:49,144 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] [2023-12-20 03:07:49,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 358399884, now seen corresponding path program 1 times [2023-12-20 03:07:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914720826] [2023-12-20 03:07:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914720826] [2023-12-20 03:07:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914720826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:07:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210044882] [2023-12-20 03:07:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:07:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:07:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:07:49,439 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 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 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:49,481 INFO L93 Difference]: Finished difference Result 142 states and 226 transitions. [2023-12-20 03:07:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:07:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 03:07:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:49,489 INFO L225 Difference]: With dead ends: 142 [2023-12-20 03:07:49,489 INFO L226 Difference]: Without dead ends: 94 [2023-12-20 03:07:49,490 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 [2023-12-20 03:07:49,492 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 60 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:49,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-20 03:07:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-12-20 03:07:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 91 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2023-12-20 03:07:49,516 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 36 [2023-12-20 03:07:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:49,516 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2023-12-20 03:07:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2023-12-20 03:07:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 03:07:49,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:49,517 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] [2023-12-20 03:07:49,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:07:49,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:49,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1160274850, now seen corresponding path program 1 times [2023-12-20 03:07:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:49,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508112183] [2023-12-20 03:07:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508112183] [2023-12-20 03:07:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508112183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:49,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:07:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597488116] [2023-12-20 03:07:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:49,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:07:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:07:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:07:49,606 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:49,631 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2023-12-20 03:07:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:07:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-20 03:07:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:49,632 INFO L225 Difference]: With dead ends: 224 [2023-12-20 03:07:49,632 INFO L226 Difference]: Without dead ends: 150 [2023-12-20 03:07:49,633 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 [2023-12-20 03:07:49,633 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:49,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-20 03:07:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-20 03:07:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5170068027210883) internal successors, (223), 147 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 223 transitions. [2023-12-20 03:07:49,642 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 223 transitions. Word has length 37 [2023-12-20 03:07:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:49,643 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 223 transitions. [2023-12-20 03:07:49,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 223 transitions. [2023-12-20 03:07:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 03:07:49,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:49,644 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] [2023-12-20 03:07:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:07:49,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:49,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1494588776, now seen corresponding path program 1 times [2023-12-20 03:07:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129644886] [2023-12-20 03:07:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:49,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129644886] [2023-12-20 03:07:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129644886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:49,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034457928] [2023-12-20 03:07:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:49,746 INFO L87 Difference]: Start difference. First operand 148 states and 223 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:49,822 INFO L93 Difference]: Finished difference Result 928 states and 1453 transitions. [2023-12-20 03:07:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:07:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 03:07:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:49,826 INFO L225 Difference]: With dead ends: 928 [2023-12-20 03:07:49,826 INFO L226 Difference]: Without dead ends: 798 [2023-12-20 03:07:49,827 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 [2023-12-20 03:07:49,827 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:49,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 573 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-20 03:07:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 276. [2023-12-20 03:07:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.5236363636363637) internal successors, (419), 275 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 419 transitions. [2023-12-20 03:07:49,847 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 419 transitions. Word has length 38 [2023-12-20 03:07:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:49,848 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 419 transitions. [2023-12-20 03:07:49,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 419 transitions. [2023-12-20 03:07:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 03:07:49,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:49,849 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] [2023-12-20 03:07:49,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:07:49,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:49,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 858913764, now seen corresponding path program 1 times [2023-12-20 03:07:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370085183] [2023-12-20 03:07:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370085183] [2023-12-20 03:07:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370085183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:07:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594148466] [2023-12-20 03:07:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:07:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:07:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:07:49,900 INFO L87 Difference]: Start difference. First operand 276 states and 419 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:49,916 INFO L93 Difference]: Finished difference Result 748 states and 1145 transitions. [2023-12-20 03:07:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:07:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 03:07:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:49,918 INFO L225 Difference]: With dead ends: 748 [2023-12-20 03:07:49,918 INFO L226 Difference]: Without dead ends: 490 [2023-12-20 03:07:49,919 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 [2023-12-20 03:07:49,919 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:49,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-20 03:07:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 480. [2023-12-20 03:07:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.4926931106471817) internal successors, (715), 479 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions. [2023-12-20 03:07:49,932 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 40 [2023-12-20 03:07:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 715 transitions. [2023-12-20 03:07:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions. [2023-12-20 03:07:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 03:07:49,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:49,934 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] [2023-12-20 03:07:49,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:07:49,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:49,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash 879916419, now seen corresponding path program 1 times [2023-12-20 03:07:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:49,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823679505] [2023-12-20 03:07:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823679505] [2023-12-20 03:07:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823679505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451438102] [2023-12-20 03:07:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:50,113 INFO L87 Difference]: Start difference. First operand 480 states and 715 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,165 INFO L93 Difference]: Finished difference Result 944 states and 1413 transitions. [2023-12-20 03:07:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:50,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 03:07:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,169 INFO L225 Difference]: With dead ends: 944 [2023-12-20 03:07:50,169 INFO L226 Difference]: Without dead ends: 482 [2023-12-20 03:07:50,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:07:50,173 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 202 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-20 03:07:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480. [2023-12-20 03:07:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.475991649269311) internal successors, (707), 479 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 707 transitions. [2023-12-20 03:07:50,189 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 707 transitions. Word has length 40 [2023-12-20 03:07:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,189 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 707 transitions. [2023-12-20 03:07:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 707 transitions. [2023-12-20 03:07:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:07:50,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,195 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] [2023-12-20 03:07:50,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:07:50,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1505695790, now seen corresponding path program 1 times [2023-12-20 03:07:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785441548] [2023-12-20 03:07:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785441548] [2023-12-20 03:07:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785441548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:07:50,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328006341] [2023-12-20 03:07:50,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:50,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:50,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:50,287 INFO L87 Difference]: Start difference. First operand 480 states and 707 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,360 INFO L93 Difference]: Finished difference Result 1200 states and 1793 transitions. [2023-12-20 03:07:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 03:07:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,362 INFO L225 Difference]: With dead ends: 1200 [2023-12-20 03:07:50,363 INFO L226 Difference]: Without dead ends: 738 [2023-12-20 03:07:50,363 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 [2023-12-20 03:07:50,365 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 353 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:07:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-20 03:07:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 736. [2023-12-20 03:07:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4789115646258504) internal successors, (1087), 735 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1087 transitions. [2023-12-20 03:07:50,384 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1087 transitions. Word has length 41 [2023-12-20 03:07:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,385 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1087 transitions. [2023-12-20 03:07:50,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1087 transitions. [2023-12-20 03:07:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:07:50,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,387 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] [2023-12-20 03:07:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:07:50,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1633781097, now seen corresponding path program 1 times [2023-12-20 03:07:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970820938] [2023-12-20 03:07:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970820938] [2023-12-20 03:07:50,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970820938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:07:50,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822106919] [2023-12-20 03:07:50,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:50,467 INFO L87 Difference]: Start difference. First operand 736 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,507 INFO L93 Difference]: Finished difference Result 1454 states and 2156 transitions. [2023-12-20 03:07:50,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:50,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 03:07:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,509 INFO L225 Difference]: With dead ends: 1454 [2023-12-20 03:07:50,509 INFO L226 Difference]: Without dead ends: 736 [2023-12-20 03:07:50,510 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 [2023-12-20 03:07:50,512 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 209 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-20 03:07:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-12-20 03:07:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.4625850340136055) internal successors, (1075), 735 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1075 transitions. [2023-12-20 03:07:50,523 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1075 transitions. Word has length 41 [2023-12-20 03:07:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,523 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1075 transitions. [2023-12-20 03:07:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1075 transitions. [2023-12-20 03:07:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:07:50,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,524 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] [2023-12-20 03:07:50,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:07:50,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1795653810, now seen corresponding path program 1 times [2023-12-20 03:07:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612338613] [2023-12-20 03:07:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612338613] [2023-12-20 03:07:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612338613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179188913] [2023-12-20 03:07:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:50,680 INFO L87 Difference]: Start difference. First operand 736 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,710 INFO L93 Difference]: Finished difference Result 1343 states and 1962 transitions. [2023-12-20 03:07:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:07:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 03:07:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,714 INFO L225 Difference]: With dead ends: 1343 [2023-12-20 03:07:50,714 INFO L226 Difference]: Without dead ends: 1341 [2023-12-20 03:07:50,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:07:50,716 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 114 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 402 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-12-20 03:07:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 768. [2023-12-20 03:07:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.438070404172099) internal successors, (1103), 767 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1103 transitions. [2023-12-20 03:07:50,728 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1103 transitions. Word has length 41 [2023-12-20 03:07:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,729 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1103 transitions. [2023-12-20 03:07:50,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1103 transitions. [2023-12-20 03:07:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:07:50,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,730 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] [2023-12-20 03:07:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:07:50,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1846258053, now seen corresponding path program 1 times [2023-12-20 03:07:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607527092] [2023-12-20 03:07:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607527092] [2023-12-20 03:07:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607527092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:07:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940693038] [2023-12-20 03:07:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:07:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:07:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:07:50,761 INFO L87 Difference]: Start difference. First operand 768 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,778 INFO L93 Difference]: Finished difference Result 1703 states and 2477 transitions. [2023-12-20 03:07:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:07:50,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 03:07:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,781 INFO L225 Difference]: With dead ends: 1703 [2023-12-20 03:07:50,782 INFO L226 Difference]: Without dead ends: 1156 [2023-12-20 03:07:50,785 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 [2023-12-20 03:07:50,787 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 183 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-12-20 03:07:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1154. [2023-12-20 03:07:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.430182133564614) internal successors, (1649), 1153 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1649 transitions. [2023-12-20 03:07:50,802 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1649 transitions. Word has length 41 [2023-12-20 03:07:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,803 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1649 transitions. [2023-12-20 03:07:50,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1649 transitions. [2023-12-20 03:07:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 03:07:50,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:07:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:07:50,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1413176550, now seen corresponding path program 1 times [2023-12-20 03:07:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107108762] [2023-12-20 03:07:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:07:50,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:50,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107108762] [2023-12-20 03:07:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107108762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:50,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:50,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924344936] [2023-12-20 03:07:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:50,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:50,900 INFO L87 Difference]: Start difference. First operand 1154 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2023-12-20 03:07:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:50,945 INFO L93 Difference]: Finished difference Result 4922 states and 7047 transitions. [2023-12-20 03:07:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:50,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 60 [2023-12-20 03:07:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:50,954 INFO L225 Difference]: With dead ends: 4922 [2023-12-20 03:07:50,954 INFO L226 Difference]: Without dead ends: 3788 [2023-12-20 03:07:50,957 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 [2023-12-20 03:07:50,957 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 229 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:50,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 337 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2023-12-20 03:07:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2286. [2023-12-20 03:07:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 1.425382932166302) internal successors, (3257), 2285 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3257 transitions. [2023-12-20 03:07:50,993 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3257 transitions. Word has length 60 [2023-12-20 03:07:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:50,993 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 3257 transitions. [2023-12-20 03:07:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2023-12-20 03:07:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3257 transitions. [2023-12-20 03:07:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 03:07:50,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:50,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:07:50,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:07:50,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:50,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1727844640, now seen corresponding path program 1 times [2023-12-20 03:07:50,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:50,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49383709] [2023-12-20 03:07:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:50,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 03:07:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49383709] [2023-12-20 03:07:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49383709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:51,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:51,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:51,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528235534] [2023-12-20 03:07:51,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:51,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:51,060 INFO L87 Difference]: Start difference. First operand 2286 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2023-12-20 03:07:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:51,117 INFO L93 Difference]: Finished difference Result 6054 states and 8655 transitions. [2023-12-20 03:07:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:51,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 60 [2023-12-20 03:07:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:51,128 INFO L225 Difference]: With dead ends: 6054 [2023-12-20 03:07:51,128 INFO L226 Difference]: Without dead ends: 4920 [2023-12-20 03:07:51,129 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 [2023-12-20 03:07:51,130 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:51,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 382 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-20 03:07:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 3986. [2023-12-20 03:07:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3985 states have (on average 1.4180677540777917) internal successors, (5651), 3985 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5651 transitions. [2023-12-20 03:07:51,188 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5651 transitions. Word has length 60 [2023-12-20 03:07:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:51,188 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5651 transitions. [2023-12-20 03:07:51,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2023-12-20 03:07:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5651 transitions. [2023-12-20 03:07:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 03:07:51,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:51,189 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:07:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:07:51,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:51,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -996358177, now seen corresponding path program 1 times [2023-12-20 03:07:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:51,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749544244] [2023-12-20 03:07:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:07:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749544244] [2023-12-20 03:07:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749544244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:07:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071830526] [2023-12-20 03:07:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:51,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:07:51,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:07:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:07:51,254 INFO L87 Difference]: Start difference. First operand 3986 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:51,308 INFO L93 Difference]: Finished difference Result 6778 states and 9711 transitions. [2023-12-20 03:07:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:07:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 03:07:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:51,322 INFO L225 Difference]: With dead ends: 6778 [2023-12-20 03:07:51,322 INFO L226 Difference]: Without dead ends: 5848 [2023-12-20 03:07:51,355 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 [2023-12-20 03:07:51,356 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 215 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:51,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2023-12-20 03:07:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4914. [2023-12-20 03:07:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4913 states have (on average 1.4221453287197232) internal successors, (6987), 4913 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 6987 transitions. [2023-12-20 03:07:51,415 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 6987 transitions. Word has length 61 [2023-12-20 03:07:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:51,416 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 6987 transitions. [2023-12-20 03:07:51,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 6987 transitions. [2023-12-20 03:07:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:07:51,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:51,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:07:51,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:07:51,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:51,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:51,417 INFO L85 PathProgramCache]: Analyzing trace with hash -47821439, now seen corresponding path program 1 times [2023-12-20 03:07:51,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:51,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921355838] [2023-12-20 03:07:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:51,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:51,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921355838] [2023-12-20 03:07:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921355838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:07:51,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:07:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:07:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027866746] [2023-12-20 03:07:51,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:07:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:07:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:07:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:07:51,466 INFO L87 Difference]: Start difference. First operand 4914 states and 6987 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:51,493 INFO L93 Difference]: Finished difference Result 9120 states and 13032 transitions. [2023-12-20 03:07:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:07:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:07:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:51,509 INFO L225 Difference]: With dead ends: 9120 [2023-12-20 03:07:51,509 INFO L226 Difference]: Without dead ends: 4226 [2023-12-20 03:07:51,514 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 [2023-12-20 03:07:51,515 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:51,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:07:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2023-12-20 03:07:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4224. [2023-12-20 03:07:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 1.4186597205777882) internal successors, (5991), 4223 states have internal predecessors, (5991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5991 transitions. [2023-12-20 03:07:51,561 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5991 transitions. Word has length 62 [2023-12-20 03:07:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:51,561 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5991 transitions. [2023-12-20 03:07:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5991 transitions. [2023-12-20 03:07:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:07:51,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:51,562 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:07:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:07:51,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1761938601, now seen corresponding path program 1 times [2023-12-20 03:07:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263427080] [2023-12-20 03:07:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263427080] [2023-12-20 03:07:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263427080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:07:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322699355] [2023-12-20 03:07:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:51,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:07:51,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:07:51,910 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) [2023-12-20 03:07:51,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:07:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:51,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 03:07:51,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:07:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:07:52,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:07:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:07:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322699355] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:07:52,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:07:52,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 03:07:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300474233] [2023-12-20 03:07:52,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:07:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 03:07:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 03:07:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:07:52,214 INFO L87 Difference]: Start difference. First operand 4224 states and 5991 transitions. Second operand has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:07:56,650 INFO L93 Difference]: Finished difference Result 52888 states and 72307 transitions. [2023-12-20 03:07:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-20 03:07:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:07:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:07:56,724 INFO L225 Difference]: With dead ends: 52888 [2023-12-20 03:07:56,724 INFO L226 Difference]: Without dead ends: 48710 [2023-12-20 03:07:56,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9802 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3526, Invalid=19426, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 03:07:56,742 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 3117 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 03:07:56,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 976 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 03:07:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48710 states. [2023-12-20 03:07:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48710 to 21561. [2023-12-20 03:07:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 21560 states have (on average 1.356818181818182) internal successors, (29253), 21560 states have internal predecessors, (29253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 29253 transitions. [2023-12-20 03:07:57,160 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 29253 transitions. Word has length 62 [2023-12-20 03:07:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:07:57,160 INFO L495 AbstractCegarLoop]: Abstraction has 21561 states and 29253 transitions. [2023-12-20 03:07:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:07:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 29253 transitions. [2023-12-20 03:07:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:07:57,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:07:57,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:07:57,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 03:07:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-20 03:07:57,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:07:57,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:07:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1655136314, now seen corresponding path program 1 times [2023-12-20 03:07:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:07:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972715289] [2023-12-20 03:07:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:07:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:57,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:07:57,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972715289] [2023-12-20 03:07:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972715289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:07:57,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37461583] [2023-12-20 03:07:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:07:57,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:07:57,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:07:57,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:07:57,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:07:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:07:57,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 03:07:57,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:07:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:58,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:07:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:07:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37461583] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:07:59,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:07:59,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 32 [2023-12-20 03:07:59,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147017710] [2023-12-20 03:07:59,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:07:59,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 03:07:59,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:07:59,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 03:07:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 03:07:59,739 INFO L87 Difference]: Start difference. First operand 21561 states and 29253 transitions. Second operand has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,031 INFO L93 Difference]: Finished difference Result 326852 states and 433450 transitions. [2023-12-20 03:08:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-20 03:08:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 03:08:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,675 INFO L225 Difference]: With dead ends: 326852 [2023-12-20 03:08:15,675 INFO L226 Difference]: Without dead ends: 305330 [2023-12-20 03:08:15,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33001 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=11572, Invalid=62684, Unknown=0, NotChecked=0, Total=74256 [2023-12-20 03:08:15,747 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 6609 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6609 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6609 Valid, 3138 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 03:08:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305330 states. [2023-12-20 03:08:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305330 to 85174. [2023-12-20 03:08:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85174 states, 85173 states have (on average 1.3349300834771582) internal successors, (113700), 85173 states have internal predecessors, (113700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85174 states to 85174 states and 113700 transitions. [2023-12-20 03:08:18,193 INFO L78 Accepts]: Start accepts. Automaton has 85174 states and 113700 transitions. Word has length 63 [2023-12-20 03:08:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:18,193 INFO L495 AbstractCegarLoop]: Abstraction has 85174 states and 113700 transitions. [2023-12-20 03:08:18,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 85174 states and 113700 transitions. [2023-12-20 03:08:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 03:08:18,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:18,195 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:08:18,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 03:08:18,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 03:08:18,401 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:18,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash -828916665, now seen corresponding path program 1 times [2023-12-20 03:08:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:18,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202942333] [2023-12-20 03:08:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:19,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202942333] [2023-12-20 03:08:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202942333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:08:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140835321] [2023-12-20 03:08:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:19,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:08:19,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 03:08:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:19,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:08:19,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:08:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:20,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:08:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140835321] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:08:20,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:08:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 42 [2023-12-20 03:08:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015783265] [2023-12-20 03:08:20,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:08:20,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 03:08:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 03:08:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1680, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 03:08:20,866 INFO L87 Difference]: Start difference. First operand 85174 states and 113700 transitions. Second operand has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:27,771 INFO L93 Difference]: Finished difference Result 231827 states and 307924 transitions. [2023-12-20 03:08:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-20 03:08:27,771 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 03:08:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:28,089 INFO L225 Difference]: With dead ends: 231827 [2023-12-20 03:08:28,089 INFO L226 Difference]: Without dead ends: 197520 [2023-12-20 03:08:28,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2462, Invalid=12058, Unknown=0, NotChecked=0, Total=14520 [2023-12-20 03:08:28,170 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 5057 mSDsluCounter, 7407 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:28,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5057 Valid, 7746 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 03:08:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197520 states. [2023-12-20 03:08:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197520 to 98049. [2023-12-20 03:08:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98049 states, 98048 states have (on average 1.333734497389034) internal successors, (130770), 98048 states have internal predecessors, (130770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98049 states to 98049 states and 130770 transitions. [2023-12-20 03:08:30,176 INFO L78 Accepts]: Start accepts. Automaton has 98049 states and 130770 transitions. Word has length 64 [2023-12-20 03:08:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:30,176 INFO L495 AbstractCegarLoop]: Abstraction has 98049 states and 130770 transitions. [2023-12-20 03:08:30,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.046511627906977) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 98049 states and 130770 transitions. [2023-12-20 03:08:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 03:08:30,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:30,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 03:08:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:30,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1418818140, now seen corresponding path program 1 times [2023-12-20 03:08:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429680072] [2023-12-20 03:08:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:30,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429680072] [2023-12-20 03:08:30,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429680072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:30,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:30,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031244247] [2023-12-20 03:08:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:30,437 INFO L87 Difference]: Start difference. First operand 98049 states and 130770 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:31,167 INFO L93 Difference]: Finished difference Result 144921 states and 192988 transitions. [2023-12-20 03:08:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:31,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 03:08:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:31,290 INFO L225 Difference]: With dead ends: 144921 [2023-12-20 03:08:31,290 INFO L226 Difference]: Without dead ends: 54900 [2023-12-20 03:08:31,323 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 [2023-12-20 03:08:31,323 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:31,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54900 states. [2023-12-20 03:08:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54900 to 54898. [2023-12-20 03:08:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54898 states, 54897 states have (on average 1.2980126418565678) internal successors, (71257), 54897 states have internal predecessors, (71257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54898 states to 54898 states and 71257 transitions. [2023-12-20 03:08:32,039 INFO L78 Accepts]: Start accepts. Automaton has 54898 states and 71257 transitions. Word has length 64 [2023-12-20 03:08:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:32,040 INFO L495 AbstractCegarLoop]: Abstraction has 54898 states and 71257 transitions. [2023-12-20 03:08:32,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 54898 states and 71257 transitions. [2023-12-20 03:08:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 03:08:32,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:32,041 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:08:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:08:32,041 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:32,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1444308260, now seen corresponding path program 1 times [2023-12-20 03:08:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:32,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384719383] [2023-12-20 03:08:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384719383] [2023-12-20 03:08:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384719383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:08:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649285855] [2023-12-20 03:08:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:32,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:08:32,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 03:08:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:32,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:08:32,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:08:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:33,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:08:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649285855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:08:33,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:08:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-20 03:08:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700469282] [2023-12-20 03:08:33,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:08:33,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 03:08:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 03:08:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 03:08:33,781 INFO L87 Difference]: Start difference. First operand 54898 states and 71257 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:59,743 INFO L93 Difference]: Finished difference Result 270755 states and 345805 transitions. [2023-12-20 03:08:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-12-20 03:08:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 03:08:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:00,303 INFO L225 Difference]: With dead ends: 270755 [2023-12-20 03:09:00,312 INFO L226 Difference]: Without dead ends: 235800 [2023-12-20 03:09:00,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44121 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=12138, Invalid=93812, Unknown=0, NotChecked=0, Total=105950 [2023-12-20 03:09:00,381 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 12218 mSDsluCounter, 9001 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12218 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:00,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12218 Valid, 9689 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 03:09:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235800 states. [2023-12-20 03:09:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235800 to 75684. [2023-12-20 03:09:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75684 states, 75683 states have (on average 1.3010583618514064) internal successors, (98468), 75683 states have internal predecessors, (98468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75684 states to 75684 states and 98468 transitions. [2023-12-20 03:09:02,097 INFO L78 Accepts]: Start accepts. Automaton has 75684 states and 98468 transitions. Word has length 64 [2023-12-20 03:09:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:02,097 INFO L495 AbstractCegarLoop]: Abstraction has 75684 states and 98468 transitions. [2023-12-20 03:09:02,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 75684 states and 98468 transitions. [2023-12-20 03:09:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:09:02,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:02,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:02,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:02,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 03:09:02,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:02,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1345366557, now seen corresponding path program 1 times [2023-12-20 03:09:02,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:02,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388668501] [2023-12-20 03:09:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:02,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 03:09:02,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388668501] [2023-12-20 03:09:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388668501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:02,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:02,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:02,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329013422] [2023-12-20 03:09:02,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:02,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:02,326 INFO L87 Difference]: Start difference. First operand 75684 states and 98468 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2023-12-20 03:09:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:02,788 INFO L93 Difference]: Finished difference Result 126766 states and 165329 transitions. [2023-12-20 03:09:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:02,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 65 [2023-12-20 03:09:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:02,850 INFO L225 Difference]: With dead ends: 126766 [2023-12-20 03:09:02,850 INFO L226 Difference]: Without dead ends: 52272 [2023-12-20 03:09:02,884 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 [2023-12-20 03:09:02,885 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 53 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:02,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 97 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52272 states. [2023-12-20 03:09:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52272 to 52272. [2023-12-20 03:09:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52272 states, 52271 states have (on average 1.2913661494901572) internal successors, (67501), 52271 states have internal predecessors, (67501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52272 states to 52272 states and 67501 transitions. [2023-12-20 03:09:03,522 INFO L78 Accepts]: Start accepts. Automaton has 52272 states and 67501 transitions. Word has length 65 [2023-12-20 03:09:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,522 INFO L495 AbstractCegarLoop]: Abstraction has 52272 states and 67501 transitions. [2023-12-20 03:09:03,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2023-12-20 03:09:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 52272 states and 67501 transitions. [2023-12-20 03:09:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:09:03,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:03,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:09:03,524 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1345245760, now seen corresponding path program 1 times [2023-12-20 03:09:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756753419] [2023-12-20 03:09:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 03:09:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756753419] [2023-12-20 03:09:03,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756753419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431810970] [2023-12-20 03:09:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:03,561 INFO L87 Difference]: Start difference. First operand 52272 states and 67501 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:03,844 INFO L93 Difference]: Finished difference Result 79113 states and 102605 transitions. [2023-12-20 03:09:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:03,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:09:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,873 INFO L225 Difference]: With dead ends: 79113 [2023-12-20 03:09:03,873 INFO L226 Difference]: Without dead ends: 27222 [2023-12-20 03:09:03,882 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 [2023-12-20 03:09:03,883 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2023-12-20 03:09:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 27222. [2023-12-20 03:09:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27222 states, 27221 states have (on average 1.287902722163036) internal successors, (35058), 27221 states have internal predecessors, (35058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27222 states to 27222 states and 35058 transitions. [2023-12-20 03:09:04,168 INFO L78 Accepts]: Start accepts. Automaton has 27222 states and 35058 transitions. Word has length 66 [2023-12-20 03:09:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:04,168 INFO L495 AbstractCegarLoop]: Abstraction has 27222 states and 35058 transitions. [2023-12-20 03:09:04,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27222 states and 35058 transitions. [2023-12-20 03:09:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 03:09:04,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:04,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:04,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:09:04,169 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:04,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash -272504981, now seen corresponding path program 1 times [2023-12-20 03:09:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501265799] [2023-12-20 03:09:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:09:04,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501265799] [2023-12-20 03:09:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501265799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:04,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:04,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595605360] [2023-12-20 03:09:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:04,334 INFO L87 Difference]: Start difference. First operand 27222 states and 35058 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:04,428 INFO L93 Difference]: Finished difference Result 49068 states and 63203 transitions. [2023-12-20 03:09:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:04,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 03:09:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:04,452 INFO L225 Difference]: With dead ends: 49068 [2023-12-20 03:09:04,452 INFO L226 Difference]: Without dead ends: 21911 [2023-12-20 03:09:04,468 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 [2023-12-20 03:09:04,468 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 51 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:04,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21911 states. [2023-12-20 03:09:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21911 to 21911. [2023-12-20 03:09:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21911 states, 21910 states have (on average 1.2678229119123687) internal successors, (27778), 21910 states have internal predecessors, (27778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21911 states to 21911 states and 27778 transitions. [2023-12-20 03:09:04,806 INFO L78 Accepts]: Start accepts. Automaton has 21911 states and 27778 transitions. Word has length 66 [2023-12-20 03:09:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:04,806 INFO L495 AbstractCegarLoop]: Abstraction has 21911 states and 27778 transitions. [2023-12-20 03:09:04,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 21911 states and 27778 transitions. [2023-12-20 03:09:04,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 03:09:04,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:04,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:04,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:09:04,807 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:04,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 993814636, now seen corresponding path program 1 times [2023-12-20 03:09:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087952700] [2023-12-20 03:09:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:04,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087952700] [2023-12-20 03:09:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087952700] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173376580] [2023-12-20 03:09:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:04,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:04,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 03:09:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:04,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 03:09:04,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:05,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173376580] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:05,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:05,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 03:09:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351624098] [2023-12-20 03:09:05,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 03:09:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 03:09:05,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:09:05,244 INFO L87 Difference]: Start difference. First operand 21911 states and 27778 transitions. Second operand has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:05,409 INFO L93 Difference]: Finished difference Result 36062 states and 45549 transitions. [2023-12-20 03:09:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:09:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 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 87 [2023-12-20 03:09:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:05,432 INFO L225 Difference]: With dead ends: 36062 [2023-12-20 03:09:05,432 INFO L226 Difference]: Without dead ends: 21200 [2023-12-20 03:09:05,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:09:05,444 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 351 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:05,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 250 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21200 states. [2023-12-20 03:09:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21200 to 19188. [2023-12-20 03:09:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19188 states, 19187 states have (on average 1.2490748944597905) internal successors, (23966), 19187 states have internal predecessors, (23966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19188 states to 19188 states and 23966 transitions. [2023-12-20 03:09:05,656 INFO L78 Accepts]: Start accepts. Automaton has 19188 states and 23966 transitions. Word has length 87 [2023-12-20 03:09:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:05,656 INFO L495 AbstractCegarLoop]: Abstraction has 19188 states and 23966 transitions. [2023-12-20 03:09:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.181818181818182) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 19188 states and 23966 transitions. [2023-12-20 03:09:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:09:05,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:05,658 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:05,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-20 03:09:05,866 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:05,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -198688652, now seen corresponding path program 1 times [2023-12-20 03:09:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681439685] [2023-12-20 03:09:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-20 03:09:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681439685] [2023-12-20 03:09:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681439685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:05,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:05,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:05,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308030776] [2023-12-20 03:09:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:05,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:05,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:05,919 INFO L87 Difference]: Start difference. First operand 19188 states and 23966 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:05,976 INFO L93 Difference]: Finished difference Result 29357 states and 36714 transitions. [2023-12-20 03:09:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:05,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-20 03:09:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:05,988 INFO L225 Difference]: With dead ends: 29357 [2023-12-20 03:09:05,988 INFO L226 Difference]: Without dead ends: 10538 [2023-12-20 03:09:05,998 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 [2023-12-20 03:09:06,000 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 24 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:06,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 136 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2023-12-20 03:09:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10536. [2023-12-20 03:09:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10535 states have (on average 1.2362600854295207) internal successors, (13024), 10535 states have internal predecessors, (13024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 13024 transitions. [2023-12-20 03:09:06,087 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 13024 transitions. Word has length 109 [2023-12-20 03:09:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:06,087 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 13024 transitions. [2023-12-20 03:09:06,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 13024 transitions. [2023-12-20 03:09:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:09:06,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:06,088 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:06,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:09:06,088 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:06,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 184087156, now seen corresponding path program 1 times [2023-12-20 03:09:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008496545] [2023-12-20 03:09:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008496545] [2023-12-20 03:09:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008496545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018368902] [2023-12-20 03:09:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:06,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:06,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:06,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 03:09:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:06,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 03:09:06,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:07,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018368902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:08,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-20 03:09:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719557103] [2023-12-20 03:09:08,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 03:09:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 03:09:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-12-20 03:09:08,260 INFO L87 Difference]: Start difference. First operand 10536 states and 13024 transitions. Second operand has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:08,799 INFO L93 Difference]: Finished difference Result 17936 states and 22150 transitions. [2023-12-20 03:09:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 03:09:08,800 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 109 [2023-12-20 03:09:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:08,811 INFO L225 Difference]: With dead ends: 17936 [2023-12-20 03:09:08,811 INFO L226 Difference]: Without dead ends: 13398 [2023-12-20 03:09:08,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:09:08,817 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 817 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:08,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 692 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13398 states. [2023-12-20 03:09:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13398 to 10218. [2023-12-20 03:09:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 10217 states have (on average 1.2224723500048937) internal successors, (12490), 10217 states have internal predecessors, (12490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 12490 transitions. [2023-12-20 03:09:08,905 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 12490 transitions. Word has length 109 [2023-12-20 03:09:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:08,905 INFO L495 AbstractCegarLoop]: Abstraction has 10218 states and 12490 transitions. [2023-12-20 03:09:08,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 12490 transitions. [2023-12-20 03:09:08,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:09:08,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:08,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:09,112 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1529202536, now seen corresponding path program 1 times [2023-12-20 03:09:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211045690] [2023-12-20 03:09:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211045690] [2023-12-20 03:09:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211045690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:09,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488278235] [2023-12-20 03:09:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:09,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:09,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:09,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:09,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 03:09:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:09,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 03:09:09,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:10,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:11,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488278235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:11,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:11,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-20 03:09:11,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208089568] [2023-12-20 03:09:11,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 03:09:11,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:11,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 03:09:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-12-20 03:09:11,093 INFO L87 Difference]: Start difference. First operand 10218 states and 12490 transitions. Second operand has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:12,524 INFO L93 Difference]: Finished difference Result 19354 states and 23607 transitions. [2023-12-20 03:09:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 03:09:12,525 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 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 109 [2023-12-20 03:09:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:12,538 INFO L225 Difference]: With dead ends: 19354 [2023-12-20 03:09:12,538 INFO L226 Difference]: Without dead ends: 14070 [2023-12-20 03:09:12,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=727, Invalid=2813, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 03:09:12,545 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2126 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:12,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 823 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:09:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14070 states. [2023-12-20 03:09:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14070 to 10218. [2023-12-20 03:09:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 10217 states have (on average 1.216501908583733) internal successors, (12429), 10217 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 12429 transitions. [2023-12-20 03:09:12,705 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 12429 transitions. Word has length 109 [2023-12-20 03:09:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:12,705 INFO L495 AbstractCegarLoop]: Abstraction has 10218 states and 12429 transitions. [2023-12-20 03:09:12,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 29 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 12429 transitions. [2023-12-20 03:09:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:09:12,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:12,706 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:12,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:12,909 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:12,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 461077472, now seen corresponding path program 1 times [2023-12-20 03:09:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155843354] [2023-12-20 03:09:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:09:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155843354] [2023-12-20 03:09:13,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155843354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503211156] [2023-12-20 03:09:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:13,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:13,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:13,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 03:09:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:13,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:09:13,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:09:14,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 59 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:09:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503211156] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:14,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:14,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 13] total 41 [2023-12-20 03:09:14,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664875012] [2023-12-20 03:09:14,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 03:09:14,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 03:09:14,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 03:09:14,936 INFO L87 Difference]: Start difference. First operand 10218 states and 12429 transitions. Second operand has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:24,438 INFO L93 Difference]: Finished difference Result 43072 states and 52105 transitions. [2023-12-20 03:09:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-20 03:09:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-20 03:09:24,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:24,471 INFO L225 Difference]: With dead ends: 43072 [2023-12-20 03:09:24,471 INFO L226 Difference]: Without dead ends: 33209 [2023-12-20 03:09:24,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10281 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=5096, Invalid=25704, Unknown=0, NotChecked=0, Total=30800 [2023-12-20 03:09:24,484 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 4846 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:24,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4846 Valid, 2956 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 03:09:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33209 states. [2023-12-20 03:09:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33209 to 12413. [2023-12-20 03:09:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12412 states have (on average 1.2159200773445054) internal successors, (15092), 12412 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 15092 transitions. [2023-12-20 03:09:24,654 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 15092 transitions. Word has length 110 [2023-12-20 03:09:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:24,655 INFO L495 AbstractCegarLoop]: Abstraction has 12413 states and 15092 transitions. [2023-12-20 03:09:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.880952380952381) internal successors, (289), 41 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 15092 transitions. [2023-12-20 03:09:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:09:24,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:24,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:24,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:24,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 03:09:24,861 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:24,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 350606184, now seen corresponding path program 1 times [2023-12-20 03:09:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:24,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642120825] [2023-12-20 03:09:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:24,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:25,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642120825] [2023-12-20 03:09:25,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642120825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388959230] [2023-12-20 03:09:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:25,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:25,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 03:09:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:25,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-20 03:09:25,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:36,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388959230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:39,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 25] total 65 [2023-12-20 03:09:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439322860] [2023-12-20 03:09:39,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:39,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-20 03:09:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-20 03:09:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=3825, Unknown=2, NotChecked=0, Total=4160 [2023-12-20 03:09:39,890 INFO L87 Difference]: Start difference. First operand 12413 states and 15092 transitions. Second operand has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:10:16,169 INFO L93 Difference]: Finished difference Result 31053 states and 36925 transitions. [2023-12-20 03:10:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-20 03:10:16,169 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-20 03:10:16,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:10:16,192 INFO L225 Difference]: With dead ends: 31053 [2023-12-20 03:10:16,193 INFO L226 Difference]: Without dead ends: 29271 [2023-12-20 03:10:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21443 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=6113, Invalid=52688, Unknown=5, NotChecked=0, Total=58806 [2023-12-20 03:10:16,204 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 3315 mSDsluCounter, 8491 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3315 SdHoareTripleChecker+Valid, 8770 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:10:16,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3315 Valid, 8770 Invalid, 4914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 03:10:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29271 states. [2023-12-20 03:10:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29271 to 17124. [2023-12-20 03:10:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 17123 states have (on average 1.2111195468083864) internal successors, (20738), 17123 states have internal predecessors, (20738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 20738 transitions. [2023-12-20 03:10:16,368 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 20738 transitions. Word has length 110 [2023-12-20 03:10:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:10:16,369 INFO L495 AbstractCegarLoop]: Abstraction has 17124 states and 20738 transitions. [2023-12-20 03:10:16,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.753846153846154) internal successors, (309), 65 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 20738 transitions. [2023-12-20 03:10:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:10:16,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:10:16,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:10:16,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 03:10:16,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 03:10:16,571 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:10:16,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:10:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -392282014, now seen corresponding path program 1 times [2023-12-20 03:10:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:10:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662115343] [2023-12-20 03:10:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:10:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:10:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662115343] [2023-12-20 03:10:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662115343] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:10:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355374213] [2023-12-20 03:10:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:16,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:10:16,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:10:16,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 03:10:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:17,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 03:10:17,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:10:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:17,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:10:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355374213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:10:19,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:10:19,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2023-12-20 03:10:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683795161] [2023-12-20 03:10:19,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:10:19,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 03:10:19,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:10:19,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 03:10:19,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2181, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 03:10:19,481 INFO L87 Difference]: Start difference. First operand 17124 states and 20738 transitions. Second operand has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:10:28,436 INFO L93 Difference]: Finished difference Result 46663 states and 56009 transitions. [2023-12-20 03:10:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-20 03:10:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-20 03:10:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:10:28,472 INFO L225 Difference]: With dead ends: 46663 [2023-12-20 03:10:28,472 INFO L226 Difference]: Without dead ends: 39529 [2023-12-20 03:10:28,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9250 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2405, Invalid=28747, Unknown=0, NotChecked=0, Total=31152 [2023-12-20 03:10:28,486 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2453 mSDsluCounter, 14514 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 15024 SdHoareTripleChecker+Invalid, 4922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:10:28,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2453 Valid, 15024 Invalid, 4922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4896 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 03:10:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39529 states. [2023-12-20 03:10:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39529 to 19312. [2023-12-20 03:10:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19312 states, 19311 states have (on average 1.2116928175651183) internal successors, (23399), 19311 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19312 states to 19312 states and 23399 transitions. [2023-12-20 03:10:28,703 INFO L78 Accepts]: Start accepts. Automaton has 19312 states and 23399 transitions. Word has length 110 [2023-12-20 03:10:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:10:28,703 INFO L495 AbstractCegarLoop]: Abstraction has 19312 states and 23399 transitions. [2023-12-20 03:10:28,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.142857142857143) internal successors, (301), 49 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:28,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19312 states and 23399 transitions. [2023-12-20 03:10:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 03:10:28,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:10:28,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:10:28,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 03:10:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 03:10:28,906 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:10:28,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:10:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1774366996, now seen corresponding path program 1 times [2023-12-20 03:10:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:10:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66714387] [2023-12-20 03:10:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:10:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:29,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:10:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66714387] [2023-12-20 03:10:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66714387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:10:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382611283] [2023-12-20 03:10:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:29,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:10:29,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:10:29,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 03:10:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:29,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 03:10:29,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:10:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 54 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:10:30,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:10:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:10:30,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382611283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:10:30,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:10:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 37 [2023-12-20 03:10:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058612562] [2023-12-20 03:10:30,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:10:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-20 03:10:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:10:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-20 03:10:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:10:30,640 INFO L87 Difference]: Start difference. First operand 19312 states and 23399 transitions. Second operand has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:10:37,105 INFO L93 Difference]: Finished difference Result 58272 states and 70399 transitions. [2023-12-20 03:10:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-20 03:10:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 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 111 [2023-12-20 03:10:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:10:37,140 INFO L225 Difference]: With dead ends: 58272 [2023-12-20 03:10:37,140 INFO L226 Difference]: Without dead ends: 39726 [2023-12-20 03:10:37,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2896, Invalid=11624, Unknown=0, NotChecked=0, Total=14520 [2023-12-20 03:10:37,158 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2838 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2838 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:10:37,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2838 Valid, 2000 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:10:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39726 states. [2023-12-20 03:10:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39726 to 10529. [2023-12-20 03:10:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10529 states, 10528 states have (on average 1.2031724924012157) internal successors, (12667), 10528 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10529 states to 10529 states and 12667 transitions. [2023-12-20 03:10:37,321 INFO L78 Accepts]: Start accepts. Automaton has 10529 states and 12667 transitions. Word has length 111 [2023-12-20 03:10:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:10:37,321 INFO L495 AbstractCegarLoop]: Abstraction has 10529 states and 12667 transitions. [2023-12-20 03:10:37,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.08108108108108) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10529 states and 12667 transitions. [2023-12-20 03:10:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 03:10:37,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:10:37,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:10:37,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 03:10:37,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 03:10:37,524 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:10:37,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:10:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash 921007510, now seen corresponding path program 1 times [2023-12-20 03:10:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:10:37,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314921061] [2023-12-20 03:10:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:10:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:10:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314921061] [2023-12-20 03:10:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314921061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:10:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679638731] [2023-12-20 03:10:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:10:38,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:10:38,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 03:10:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:38,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 03:10:38,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:10:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:40,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:10:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679638731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:10:41,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:10:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 64 [2023-12-20 03:10:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234191043] [2023-12-20 03:10:41,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:10:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 03:10:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:10:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 03:10:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3807, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 03:10:41,610 INFO L87 Difference]: Start difference. First operand 10529 states and 12667 transitions. Second operand has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:11:13,177 INFO L93 Difference]: Finished difference Result 46328 states and 55935 transitions. [2023-12-20 03:11:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-20 03:11:13,177 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 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 111 [2023-12-20 03:11:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:11:13,211 INFO L225 Difference]: With dead ends: 46328 [2023-12-20 03:11:13,211 INFO L226 Difference]: Without dead ends: 37586 [2023-12-20 03:11:13,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31277 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=7440, Invalid=84066, Unknown=0, NotChecked=0, Total=91506 [2023-12-20 03:11:13,232 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 4327 mSDsluCounter, 24341 mSDsCounter, 0 mSdLazyCounter, 11144 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 24953 SdHoareTripleChecker+Invalid, 11199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 11144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:11:13,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4327 Valid, 24953 Invalid, 11199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 11144 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-20 03:11:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37586 states. [2023-12-20 03:11:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37586 to 18022. [2023-12-20 03:11:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18022 states, 18021 states have (on average 1.2032073691804006) internal successors, (21683), 18021 states have internal predecessors, (21683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18022 states to 18022 states and 21683 transitions. [2023-12-20 03:11:13,445 INFO L78 Accepts]: Start accepts. Automaton has 18022 states and 21683 transitions. Word has length 111 [2023-12-20 03:11:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:11:13,445 INFO L495 AbstractCegarLoop]: Abstraction has 18022 states and 21683 transitions. [2023-12-20 03:11:13,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.875) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18022 states and 21683 transitions. [2023-12-20 03:11:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 03:11:13,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:11:13,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:11:13,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 03:11:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:11:13,648 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:11:13,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:11:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash 28049436, now seen corresponding path program 1 times [2023-12-20 03:11:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:11:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146649250] [2023-12-20 03:11:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:11:13,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:11:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:11:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:11:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146649250] [2023-12-20 03:11:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146649250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:11:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093532800] [2023-12-20 03:11:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:11:14,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:11:14,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:11:14,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:11:14,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 03:11:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:11:14,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 03:11:14,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:11:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:16,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:11:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093532800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:11:20,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:11:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 73 [2023-12-20 03:11:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888124182] [2023-12-20 03:11:20,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:11:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-20 03:11:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:11:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-20 03:11:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4834, Unknown=0, NotChecked=0, Total=5256 [2023-12-20 03:11:20,910 INFO L87 Difference]: Start difference. First operand 18022 states and 21683 transitions. Second operand has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:14,347 INFO L93 Difference]: Finished difference Result 67173 states and 80834 transitions. [2023-12-20 03:14:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 493 states. [2023-12-20 03:14:14,347 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 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 112 [2023-12-20 03:14:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:14,403 INFO L225 Difference]: With dead ends: 67173 [2023-12-20 03:14:14,403 INFO L226 Difference]: Without dead ends: 62373 [2023-12-20 03:14:14,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129163 ImplicationChecksByTransitivity, 161.6s TimeCoverageRelationStatistics Valid=25687, Invalid=282893, Unknown=0, NotChecked=0, Total=308580 [2023-12-20 03:14:14,421 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 5890 mSDsluCounter, 13470 mSDsCounter, 0 mSdLazyCounter, 11830 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5890 SdHoareTripleChecker+Valid, 14012 SdHoareTripleChecker+Invalid, 12094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 11830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:14,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5890 Valid, 14012 Invalid, 12094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 11830 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-20 03:14:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62373 states. [2023-12-20 03:14:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62373 to 25962. [2023-12-20 03:14:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25962 states, 25961 states have (on average 1.206001309656793) internal successors, (31309), 25961 states have internal predecessors, (31309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25962 states to 25962 states and 31309 transitions. [2023-12-20 03:14:14,771 INFO L78 Accepts]: Start accepts. Automaton has 25962 states and 31309 transitions. Word has length 112 [2023-12-20 03:14:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 25962 states and 31309 transitions. [2023-12-20 03:14:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.342465753424658) internal successors, (317), 73 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 25962 states and 31309 transitions. [2023-12-20 03:14:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 03:14:14,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:14,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:14,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:14,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-20 03:14:14,977 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:14,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1378878132, now seen corresponding path program 1 times [2023-12-20 03:14:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:14,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427818572] [2023-12-20 03:14:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:14,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:16,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427818572] [2023-12-20 03:14:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427818572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286625240] [2023-12-20 03:14:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:16,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:16,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 03:14:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:16,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 03:14:16,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 51 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:18,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286625240] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:20,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 19, 20] total 67 [2023-12-20 03:14:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517725192] [2023-12-20 03:14:20,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:20,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 03:14:20,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 03:14:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4234, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 03:14:20,164 INFO L87 Difference]: Start difference. First operand 25962 states and 31309 transitions. Second operand has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:32,213 INFO L93 Difference]: Finished difference Result 49720 states and 59618 transitions. [2023-12-20 03:14:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-20 03:14:32,213 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 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 114 [2023-12-20 03:14:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:32,245 INFO L225 Difference]: With dead ends: 49720 [2023-12-20 03:14:32,245 INFO L226 Difference]: Without dead ends: 36783 [2023-12-20 03:14:32,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3334, Invalid=28172, Unknown=0, NotChecked=0, Total=31506 [2023-12-20 03:14:32,261 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2629 mSDsluCounter, 9172 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 9471 SdHoareTripleChecker+Invalid, 5260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:32,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 9471 Invalid, 5260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5206 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 03:14:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36783 states. [2023-12-20 03:14:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36783 to 22636. [2023-12-20 03:14:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22636 states, 22635 states have (on average 1.2074221338634858) internal successors, (27330), 22635 states have internal predecessors, (27330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22636 states to 22636 states and 27330 transitions. [2023-12-20 03:14:32,507 INFO L78 Accepts]: Start accepts. Automaton has 22636 states and 27330 transitions. Word has length 114 [2023-12-20 03:14:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 22636 states and 27330 transitions. [2023-12-20 03:14:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.794117647058823) internal successors, (326), 67 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 22636 states and 27330 transitions. [2023-12-20 03:14:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 03:14:32,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:32,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:32,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:32,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:32,709 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:32,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1174862654, now seen corresponding path program 1 times [2023-12-20 03:14:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477785165] [2023-12-20 03:14:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:34,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477785165] [2023-12-20 03:14:34,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477785165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231509262] [2023-12-20 03:14:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:34,020 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:34,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 03:14:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:34,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-20 03:14:34,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 20 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:36,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231509262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:41,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 79 [2023-12-20 03:14:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892304257] [2023-12-20 03:14:41,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-20 03:14:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-20 03:14:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=5915, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 03:14:41,251 INFO L87 Difference]: Start difference. First operand 22636 states and 27330 transitions. Second operand has 80 states, 80 states have (on average 4.0) internal successors, (320), 79 states have internal predecessors, (320), 0 states have call successors, (0), 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... [2023-12-20 03:21:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 529 states. [2023-12-20 03:21:40,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149096 ImplicationChecksByTransitivity, 406.4s TimeCoverageRelationStatistics Valid=29884, Invalid=337958, Unknown=0, NotChecked=0, Total=367842 [2023-12-20 03:21:40,377 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 7551 mSDsluCounter, 11137 mSDsCounter, 0 mSdLazyCounter, 13327 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7551 SdHoareTripleChecker+Valid, 11426 SdHoareTripleChecker+Invalid, 13670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 13327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:21:40,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7551 Valid, 11426 Invalid, 13670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [343 Valid, 13327 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-20 03:21:40,378 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 03:21:40,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 03:21:40,408 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 03:21:40,411 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 [2023-12-20 03:21:40,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:40,581 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (22636states) and FLOYD_HOARE automaton (currently 529 states, 80 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 607 known predicates. [2023-12-20 03:21:40,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:21:40,586 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 03:21:40,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 03:21:40 BoogieIcfgContainer [2023-12-20 03:21:40,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 03:21:40,587 INFO L158 Benchmark]: Toolchain (without parser) took 832210.23ms. Allocated memory was 195.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 148.6MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 03:21:40,587 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory was 151.2MB in the beginning and 151.1MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 03:21:40,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.65ms. Allocated memory is still 195.0MB. Free memory was 148.2MB in the beginning and 133.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 03:21:40,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.27ms. Allocated memory is still 195.0MB. Free memory was 133.6MB in the beginning and 131.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 03:21:40,588 INFO L158 Benchmark]: Boogie Preprocessor took 31.91ms. Allocated memory is still 195.0MB. Free memory was 131.1MB in the beginning and 129.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 03:21:40,588 INFO L158 Benchmark]: RCFGBuilder took 385.80ms. Allocated memory is still 195.0MB. Free memory was 129.0MB in the beginning and 107.3MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-20 03:21:40,588 INFO L158 Benchmark]: TraceAbstraction took 831498.15ms. Allocated memory was 195.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 106.7MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 03:21:40,588 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory was 151.2MB in the beginning and 151.1MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.65ms. Allocated memory is still 195.0MB. Free memory was 148.2MB in the beginning and 133.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.27ms. Allocated memory is still 195.0MB. Free memory was 133.6MB in the beginning and 131.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.91ms. Allocated memory is still 195.0MB. Free memory was 131.1MB in the beginning and 129.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 385.80ms. Allocated memory is still 195.0MB. Free memory was 129.0MB in the beginning and 107.3MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 831498.15ms. Allocated memory was 195.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 106.7MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.3GB. 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: 201]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 201). Cancelled while NwaCegarLoop was constructing difference of abstraction (22636states) and FLOYD_HOARE automaton (currently 529 states, 80 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 607 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 831.5s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 757.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66420 SdHoareTripleChecker+Valid, 56.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66420 mSDsluCounter, 115752 SdHoareTripleChecker+Invalid, 50.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109655 mSDsCounter, 1275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68721 IncrementalHoareTripleChecker+Invalid, 69996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1275 mSolverCounterUnsat, 6097 mSDtfsCounter, 68721 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5920 GetRequests, 2540 SyntacticMatches, 14 SemanticMatches, 3365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454977 ImplicationChecksByTransitivity, 715.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98049occurred in iteration=16, InterpolantAutomatonStates: 2277, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 32 MinimizatonAttempts, 672906 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 57.8s InterpolantComputationTime, 3868 NumberOfCodeBlocks, 3868 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 5255 ConstructedInterpolants, 5 QuantifiedInterpolants, 98593 SizeOfPredicates, 152 NumberOfNonLiveVariables, 5422 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 63 InterpolantComputations, 18 PerfectInterpolantSequences, 1124/3203 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