/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:28:04,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:28:05,008 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 14:28:05,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:28:05,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:28:05,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:28:05,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:28:05,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:28:05,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:28:05,049 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:28:05,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:28:05,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:28:05,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:28:05,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:28:05,051 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:28:05,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:28:05,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:28:05,052 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:28:05,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:28:05,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:28:05,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:28:05,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:28:05,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:28:05,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:28:05,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:28:05,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:28:05,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:28:05,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:28:05,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:28:05,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:28:05,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:28:05,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:28:05,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:28:05,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:28:05,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:28:05,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:28:05,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:28:05,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:28:05,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:28:05,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:28:05,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:28:05,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:28:05,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:28:05,058 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:28:05,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:28:05,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:28:05,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:28:05,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:28:05,304 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:28:05,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2023-12-20 14:28:06,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:28:06,901 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:28:06,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2023-12-20 14:28:06,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8799ed497/a13fe22fa7834b6a889e0383539ec11c/FLAG09b7cf390 [2023-12-20 14:28:06,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8799ed497/a13fe22fa7834b6a889e0383539ec11c [2023-12-20 14:28:06,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:28:06,961 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:28:06,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:28:06,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:28:06,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:28:06,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:28:06" (1/1) ... [2023-12-20 14:28:06,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc21622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:06, skipping insertion in model container [2023-12-20 14:28:06,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:28:06" (1/1) ... [2023-12-20 14:28:07,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:28:07,425 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[20463,20476] [2023-12-20 14:28:07,479 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[27524,27537] [2023-12-20 14:28:08,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:28:08,134 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:28:08,183 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[20463,20476] [2023-12-20 14:28:08,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[27524,27537] [2023-12-20 14:28:08,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:28:08,582 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:28:08,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08 WrapperNode [2023-12-20 14:28:08,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:28:08,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:28:08,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:28:08,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:28:08,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:08,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:08,922 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5215 [2023-12-20 14:28:08,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:28:08,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:28:08,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:28:08,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:28:08,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:08,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:08,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,082 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 14:28:09,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:28:09,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:28:09,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:28:09,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:28:09,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (1/1) ... [2023-12-20 14:28:09,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:28:09,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:28:09,413 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 14:28:09,520 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 14:28:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:28:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:28:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:28:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:28:09,665 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:28:09,668 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:28:13,425 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:28:13,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:28:13,473 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:28:13,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:28:13 BoogieIcfgContainer [2023-12-20 14:28:13,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:28:13,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:28:13,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:28:13,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:28:13,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:28:06" (1/3) ... [2023-12-20 14:28:13,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c294c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:28:13, skipping insertion in model container [2023-12-20 14:28:13,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:28:08" (2/3) ... [2023-12-20 14:28:13,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c294c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:28:13, skipping insertion in model container [2023-12-20 14:28:13,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:28:13" (3/3) ... [2023-12-20 14:28:13,481 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2023-12-20 14:28:13,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:28:13,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:28:13,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:28:13,554 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;@191c5a2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:28:13,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:28:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 14:28:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:28:13,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:13,570 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] [2023-12-20 14:28:13,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2135335152, now seen corresponding path program 1 times [2023-12-20 14:28:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:13,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702619663] [2023-12-20 14:28:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:13,789 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 14:28:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702619663] [2023-12-20 14:28:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702619663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:13,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:28:13,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192634105] [2023-12-20 14:28:13,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:28:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:28:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:28:13,831 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:28:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:13,938 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-20 14:28:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:28:13,940 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-20 14:28:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:13,954 INFO L225 Difference]: With dead ends: 1676 [2023-12-20 14:28:13,954 INFO L226 Difference]: Without dead ends: 861 [2023-12-20 14:28:13,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:28:13,963 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-20 14:28:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-20 14:28:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 14:28:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-20 14:28:14,041 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-20 14:28:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:14,041 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-20 14:28:14,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:28:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-20 14:28:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:28:14,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:14,043 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] [2023-12-20 14:28:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:28:14,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1712633326, now seen corresponding path program 1 times [2023-12-20 14:28:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695062697] [2023-12-20 14:28:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:14,332 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 14:28:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695062697] [2023-12-20 14:28:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695062697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:14,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:28:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568276061] [2023-12-20 14:28:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:28:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:28:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:28:14,336 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:28:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:14,450 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-20 14:28:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:28:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-20 14:28:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:14,454 INFO L225 Difference]: With dead ends: 917 [2023-12-20 14:28:14,454 INFO L226 Difference]: Without dead ends: 861 [2023-12-20 14:28:14,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:28:14,456 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:14,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:14,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-20 14:28:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-20 14:28:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states 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 14:28:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-20 14:28:14,486 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-20 14:28:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:14,486 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-20 14:28:14,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:28:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-20 14:28:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:28:14,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:14,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:14,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:28:14,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:14,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1430296051, now seen corresponding path program 1 times [2023-12-20 14:28:14,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:14,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861988749] [2023-12-20 14:28:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:14,628 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 14:28:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861988749] [2023-12-20 14:28:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861988749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:14,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:14,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:28:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447131696] [2023-12-20 14:28:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:14,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:14,637 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 14:28:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:17,875 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-12-20 14:28:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:17,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 60 [2023-12-20 14:28:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:17,883 INFO L225 Difference]: With dead ends: 2365 [2023-12-20 14:28:17,883 INFO L226 Difference]: Without dead ends: 1612 [2023-12-20 14:28:17,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:17,889 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 881 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:17,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 612 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 14:28:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-20 14:28:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-20 14:28:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.5888198757763976) internal successors, (2558), 1611 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states 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 14:28:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2558 transitions. [2023-12-20 14:28:17,926 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2558 transitions. Word has length 60 [2023-12-20 14:28:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2558 transitions. [2023-12-20 14:28:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 14:28:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2558 transitions. [2023-12-20 14:28:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 14:28:17,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:17,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:17,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:28:17,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:17,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1559562279, now seen corresponding path program 1 times [2023-12-20 14:28:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157286227] [2023-12-20 14:28:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:18,124 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 14:28:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157286227] [2023-12-20 14:28:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157286227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:18,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:18,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325379190] [2023-12-20 14:28:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:18,126 INFO L87 Difference]: Start difference. First operand 1612 states and 2558 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:18,630 INFO L93 Difference]: Finished difference Result 2354 states and 3762 transitions. [2023-12-20 14:28:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:28:18,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 14:28:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:18,640 INFO L225 Difference]: With dead ends: 2354 [2023-12-20 14:28:18,640 INFO L226 Difference]: Without dead ends: 2301 [2023-12-20 14:28:18,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:28:18,648 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:18,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:28:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-20 14:28:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-20 14:28:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.5900060204695967) internal successors, (2641), 1662 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states 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 14:28:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2641 transitions. [2023-12-20 14:28:18,685 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2641 transitions. Word has length 74 [2023-12-20 14:28:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:18,686 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2641 transitions. [2023-12-20 14:28:18,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2641 transitions. [2023-12-20 14:28:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:28:18,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:18,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:18,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:28:18,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -327839241, now seen corresponding path program 1 times [2023-12-20 14:28:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016942722] [2023-12-20 14:28:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:18,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:18,783 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 14:28:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016942722] [2023-12-20 14:28:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016942722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:18,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974487632] [2023-12-20 14:28:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:18,785 INFO L87 Difference]: Start difference. First operand 1663 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:18,826 INFO L93 Difference]: Finished difference Result 1860 states and 2960 transitions. [2023-12-20 14:28:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:18,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 14:28:18,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:18,833 INFO L225 Difference]: With dead ends: 1860 [2023-12-20 14:28:18,833 INFO L226 Difference]: Without dead ends: 1756 [2023-12-20 14:28:18,834 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 14:28:18,834 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 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 14:28:18,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-20 14:28:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-20 14:28:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.5907534246575343) internal successors, (2787), 1753 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 14:28:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2787 transitions. [2023-12-20 14:28:18,866 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2787 transitions. Word has length 76 [2023-12-20 14:28:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:18,866 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2787 transitions. [2023-12-20 14:28:18,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2787 transitions. [2023-12-20 14:28:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:28:18,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:18,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:18,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:28:18,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:18,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash -325694289, now seen corresponding path program 1 times [2023-12-20 14:28:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425713813] [2023-12-20 14:28:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:19,196 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 14:28:19,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:19,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425713813] [2023-12-20 14:28:19,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425713813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:19,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569784973] [2023-12-20 14:28:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:19,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:19,198 INFO L87 Difference]: Start difference. First operand 1754 states and 2787 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:19,522 INFO L93 Difference]: Finished difference Result 1951 states and 3103 transitions. [2023-12-20 14:28:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 14:28:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:19,529 INFO L225 Difference]: With dead ends: 1951 [2023-12-20 14:28:19,529 INFO L226 Difference]: Without dead ends: 1756 [2023-12-20 14:28:19,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:28:19,530 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 9042 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9042 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:19,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9042 Valid, 2062 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-20 14:28:19,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-20 14:28:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.5896118721461188) internal successors, (2785), 1753 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 14:28:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2785 transitions. [2023-12-20 14:28:19,579 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2785 transitions. Word has length 76 [2023-12-20 14:28:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:19,580 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2785 transitions. [2023-12-20 14:28:19,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2785 transitions. [2023-12-20 14:28:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 14:28:19,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:19,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:28:19,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:19,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1634971720, now seen corresponding path program 1 times [2023-12-20 14:28:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:19,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480756376] [2023-12-20 14:28:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:19,785 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 14:28:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480756376] [2023-12-20 14:28:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480756376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:19,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:28:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204264960] [2023-12-20 14:28:19,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:19,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:28:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:19,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:28:19,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:28:19,787 INFO L87 Difference]: Start difference. First operand 1754 states and 2785 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:19,823 INFO L93 Difference]: Finished difference Result 1762 states and 2794 transitions. [2023-12-20 14:28:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:28:19,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 14:28:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:19,829 INFO L225 Difference]: With dead ends: 1762 [2023-12-20 14:28:19,829 INFO L226 Difference]: Without dead ends: 1760 [2023-12-20 14:28:19,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:28:19,830 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:19,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-20 14:28:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-20 14:28:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.5876993166287017) internal successors, (2788), 1757 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states 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 14:28:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2788 transitions. [2023-12-20 14:28:19,863 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2788 transitions. Word has length 77 [2023-12-20 14:28:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:19,863 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2788 transitions. [2023-12-20 14:28:19,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2788 transitions. [2023-12-20 14:28:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:19,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:19,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:28:19,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:19,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -562302993, now seen corresponding path program 1 times [2023-12-20 14:28:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600148978] [2023-12-20 14:28:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:19,912 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 14:28:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600148978] [2023-12-20 14:28:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600148978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:19,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:19,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959811063] [2023-12-20 14:28:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:19,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:19,914 INFO L87 Difference]: Start difference. First operand 1758 states and 2788 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:19,951 INFO L93 Difference]: Finished difference Result 1968 states and 3121 transitions. [2023-12-20 14:28:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:19,958 INFO L225 Difference]: With dead ends: 1968 [2023-12-20 14:28:19,958 INFO L226 Difference]: Without dead ends: 1860 [2023-12-20 14:28:19,958 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 14:28:19,959 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 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 14:28:19,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-20 14:28:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-12-20 14:28:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.5867456896551724) internal successors, (2945), 1857 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 14:28:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2945 transitions. [2023-12-20 14:28:20,035 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2945 transitions. Word has length 78 [2023-12-20 14:28:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:20,036 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2945 transitions. [2023-12-20 14:28:20,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2945 transitions. [2023-12-20 14:28:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:20,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:20,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:20,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:28:20,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:20,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 193081071, now seen corresponding path program 1 times [2023-12-20 14:28:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877175330] [2023-12-20 14:28:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:20,111 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 14:28:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877175330] [2023-12-20 14:28:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877175330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:20,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:20,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287220467] [2023-12-20 14:28:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:20,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:20,114 INFO L87 Difference]: Start difference. First operand 1858 states and 2945 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:20,152 INFO L93 Difference]: Finished difference Result 2428 states and 3845 transitions. [2023-12-20 14:28:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:20,160 INFO L225 Difference]: With dead ends: 2428 [2023-12-20 14:28:20,160 INFO L226 Difference]: Without dead ends: 2131 [2023-12-20 14:28:20,161 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 14:28:20,161 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 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 14:28:20,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-20 14:28:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-12-20 14:28:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.5829807240244476) internal successors, (3367), 2128 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 14:28:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3367 transitions. [2023-12-20 14:28:20,212 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3367 transitions. Word has length 78 [2023-12-20 14:28:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:20,213 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3367 transitions. [2023-12-20 14:28:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3367 transitions. [2023-12-20 14:28:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:20,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:20,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:28:20,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:20,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash -217305617, now seen corresponding path program 1 times [2023-12-20 14:28:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703443060] [2023-12-20 14:28:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:28:20,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:20,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703443060] [2023-12-20 14:28:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703443060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379981063] [2023-12-20 14:28:20,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:20,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:20,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:20,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:20,267 INFO L87 Difference]: Start difference. First operand 2129 states and 3367 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:20,317 INFO L93 Difference]: Finished difference Result 3217 states and 5069 transitions. [2023-12-20 14:28:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:20,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:20,325 INFO L225 Difference]: With dead ends: 3217 [2023-12-20 14:28:20,325 INFO L226 Difference]: Without dead ends: 2649 [2023-12-20 14:28:20,326 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 14:28:20,327 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 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 14:28:20,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-20 14:28:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-12-20 14:28:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.5739130434782609) internal successors, (4163), 2646 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 14:28:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4163 transitions. [2023-12-20 14:28:20,395 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4163 transitions. Word has length 78 [2023-12-20 14:28:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:20,396 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4163 transitions. [2023-12-20 14:28:20,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4163 transitions. [2023-12-20 14:28:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:20,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:20,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:28:20,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:20,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -485888785, now seen corresponding path program 1 times [2023-12-20 14:28:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054620103] [2023-12-20 14:28:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:20,449 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 14:28:20,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:20,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054620103] [2023-12-20 14:28:20,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054620103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:20,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:20,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639836985] [2023-12-20 14:28:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:20,451 INFO L87 Difference]: Start difference. First operand 2647 states and 4163 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:20,517 INFO L93 Difference]: Finished difference Result 4723 states and 7373 transitions. [2023-12-20 14:28:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:20,529 INFO L225 Difference]: With dead ends: 4723 [2023-12-20 14:28:20,530 INFO L226 Difference]: Without dead ends: 3637 [2023-12-20 14:28:20,531 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 14:28:20,532 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 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 14:28:20,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:20,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-12-20 14:28:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-12-20 14:28:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.5576658409028352) internal successors, (5659), 3634 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states 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 14:28:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5659 transitions. [2023-12-20 14:28:20,629 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5659 transitions. Word has length 78 [2023-12-20 14:28:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:20,630 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5659 transitions. [2023-12-20 14:28:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5659 transitions. [2023-12-20 14:28:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:20,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:20,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:20,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:28:20,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:20,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1071600913, now seen corresponding path program 1 times [2023-12-20 14:28:20,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:20,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632200461] [2023-12-20 14:28:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:20,700 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 14:28:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632200461] [2023-12-20 14:28:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632200461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655374237] [2023-12-20 14:28:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:20,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:20,702 INFO L87 Difference]: Start difference. First operand 3635 states and 5659 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:20,810 INFO L93 Difference]: Finished difference Result 7591 states and 11693 transitions. [2023-12-20 14:28:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:20,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:20,840 INFO L225 Difference]: With dead ends: 7591 [2023-12-20 14:28:20,840 INFO L226 Difference]: Without dead ends: 5517 [2023-12-20 14:28:20,845 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 14:28:20,846 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 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 14:28:20,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-12-20 14:28:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-12-20 14:28:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.5343732994739707) internal successors, (8459), 5514 states have internal predecessors, (8459), 0 states have call successors, (0), 0 states 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 14:28:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8459 transitions. [2023-12-20 14:28:21,030 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8459 transitions. Word has length 78 [2023-12-20 14:28:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:21,030 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8459 transitions. [2023-12-20 14:28:21,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8459 transitions. [2023-12-20 14:28:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:21,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:21,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:28:21,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:21,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -182867473, now seen corresponding path program 1 times [2023-12-20 14:28:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:21,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141230037] [2023-12-20 14:28:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:21,087 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 14:28:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141230037] [2023-12-20 14:28:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141230037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666339841] [2023-12-20 14:28:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:21,090 INFO L87 Difference]: Start difference. First operand 5515 states and 8459 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:21,291 INFO L93 Difference]: Finished difference Result 13039 states and 19757 transitions. [2023-12-20 14:28:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:21,308 INFO L225 Difference]: With dead ends: 13039 [2023-12-20 14:28:21,308 INFO L226 Difference]: Without dead ends: 9085 [2023-12-20 14:28:21,313 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 14:28:21,314 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 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 14:28:21,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-20 14:28:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-12-20 14:28:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.505891421649598) internal successors, (13675), 9082 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states 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 14:28:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 13675 transitions. [2023-12-20 14:28:21,541 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 13675 transitions. Word has length 78 [2023-12-20 14:28:21,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:21,541 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 13675 transitions. [2023-12-20 14:28:21,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 13675 transitions. [2023-12-20 14:28:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:28:21,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:21,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:21,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:28:21,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:21,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash -445944849, now seen corresponding path program 1 times [2023-12-20 14:28:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:21,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2197634] [2023-12-20 14:28:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:21,590 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 14:28:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2197634] [2023-12-20 14:28:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2197634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:21,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:28:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435144638] [2023-12-20 14:28:21,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:21,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:28:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:28:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:28:21,592 INFO L87 Difference]: Start difference. First operand 9083 states and 13675 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:21,857 INFO L93 Difference]: Finished difference Result 23359 states and 34733 transitions. [2023-12-20 14:28:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:28:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 14:28:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:21,888 INFO L225 Difference]: With dead ends: 23359 [2023-12-20 14:28:21,888 INFO L226 Difference]: Without dead ends: 15837 [2023-12-20 14:28:21,899 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 14:28:21,900 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 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 14:28:21,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:28:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-12-20 14:28:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-12-20 14:28:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.4740731383818606) internal successors, (23339), 15834 states have internal predecessors, (23339), 0 states have call successors, (0), 0 states 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 14:28:22,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23339 transitions. [2023-12-20 14:28:22,411 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23339 transitions. Word has length 78 [2023-12-20 14:28:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:22,411 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23339 transitions. [2023-12-20 14:28:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23339 transitions. [2023-12-20 14:28:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:22,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:22,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:28:22,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:22,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 559870242, now seen corresponding path program 1 times [2023-12-20 14:28:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183690962] [2023-12-20 14:28:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:28:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183690962] [2023-12-20 14:28:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183690962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:22,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547374057] [2023-12-20 14:28:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:22,604 INFO L87 Difference]: Start difference. First operand 15835 states and 23339 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:24,336 INFO L93 Difference]: Finished difference Result 114347 states and 167283 transitions. [2023-12-20 14:28:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:24,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:24,557 INFO L225 Difference]: With dead ends: 114347 [2023-12-20 14:28:24,557 INFO L226 Difference]: Without dead ends: 104361 [2023-12-20 14:28:24,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:24,588 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9845 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:24,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4605 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104361 states. [2023-12-20 14:28:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104361 to 27995. [2023-12-20 14:28:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27995 states, 27993 states have (on average 1.4624727610474046) internal successors, (40939), 27994 states have internal predecessors, (40939), 0 states have call successors, (0), 0 states 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 14:28:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27995 states to 27995 states and 40939 transitions. [2023-12-20 14:28:25,792 INFO L78 Accepts]: Start accepts. Automaton has 27995 states and 40939 transitions. Word has length 100 [2023-12-20 14:28:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:25,792 INFO L495 AbstractCegarLoop]: Abstraction has 27995 states and 40939 transitions. [2023-12-20 14:28:25,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 27995 states and 40939 transitions. [2023-12-20 14:28:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:25,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:25,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:25,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:28:25,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:25,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1315254306, now seen corresponding path program 1 times [2023-12-20 14:28:25,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:25,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049288790] [2023-12-20 14:28:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:28:26,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049288790] [2023-12-20 14:28:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049288790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072518997] [2023-12-20 14:28:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:26,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:26,004 INFO L87 Difference]: Start difference. First operand 27995 states and 40939 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:28,179 INFO L93 Difference]: Finished difference Result 128619 states and 188019 transitions. [2023-12-20 14:28:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:28,358 INFO L225 Difference]: With dead ends: 128619 [2023-12-20 14:28:28,358 INFO L226 Difference]: Without dead ends: 114345 [2023-12-20 14:28:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:28,394 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9845 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:28,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4598 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114345 states. [2023-12-20 14:28:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114345 to 47259. [2023-12-20 14:28:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47259 states, 47257 states have (on average 1.4554245931819625) internal successors, (68779), 47258 states have internal predecessors, (68779), 0 states have call successors, (0), 0 states 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 14:28:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47259 states to 47259 states and 68779 transitions. [2023-12-20 14:28:30,327 INFO L78 Accepts]: Start accepts. Automaton has 47259 states and 68779 transitions. Word has length 100 [2023-12-20 14:28:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:30,327 INFO L495 AbstractCegarLoop]: Abstraction has 47259 states and 68779 transitions. [2023-12-20 14:28:30,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:28:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47259 states and 68779 transitions. [2023-12-20 14:28:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:30,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:30,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:28:30,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:30,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash 904867618, now seen corresponding path program 1 times [2023-12-20 14:28:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:30,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155369623] [2023-12-20 14:28:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:28:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155369623] [2023-12-20 14:28:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155369623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422898117] [2023-12-20 14:28:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:30,531 INFO L87 Difference]: Start difference. First operand 47259 states and 68779 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 14:28:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:33,612 INFO L93 Difference]: Finished difference Result 142891 states and 208691 transitions. [2023-12-20 14:28:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:33,880 INFO L225 Difference]: With dead ends: 142891 [2023-12-20 14:28:33,880 INFO L226 Difference]: Without dead ends: 128617 [2023-12-20 14:28:33,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:33,900 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:33,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128617 states. [2023-12-20 14:28:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128617 to 61531. [2023-12-20 14:28:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61531 states, 61529 states have (on average 1.4538022720993353) internal successors, (89451), 61530 states have internal predecessors, (89451), 0 states have call successors, (0), 0 states 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 14:28:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61531 states to 61531 states and 89451 transitions. [2023-12-20 14:28:35,881 INFO L78 Accepts]: Start accepts. Automaton has 61531 states and 89451 transitions. Word has length 100 [2023-12-20 14:28:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:35,881 INFO L495 AbstractCegarLoop]: Abstraction has 61531 states and 89451 transitions. [2023-12-20 14:28:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 14:28:35,881 INFO L276 IsEmpty]: Start isEmpty. Operand 61531 states and 89451 transitions. [2023-12-20 14:28:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:35,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:35,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:35,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:28:35,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:35,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 636284450, now seen corresponding path program 1 times [2023-12-20 14:28:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718970815] [2023-12-20 14:28:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:35,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:28:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718970815] [2023-12-20 14:28:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718970815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990168699] [2023-12-20 14:28:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:36,110 INFO L87 Difference]: Start difference. First operand 61531 states and 89451 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 14:28:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:39,573 INFO L93 Difference]: Finished difference Result 157163 states and 229363 transitions. [2023-12-20 14:28:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:39,731 INFO L225 Difference]: With dead ends: 157163 [2023-12-20 14:28:39,731 INFO L226 Difference]: Without dead ends: 142889 [2023-12-20 14:28:39,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:39,751 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:39,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142889 states. [2023-12-20 14:28:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142889 to 75803. [2023-12-20 14:28:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75803 states, 75801 states have (on average 1.4527908602788882) internal successors, (110123), 75802 states have internal predecessors, (110123), 0 states have call successors, (0), 0 states 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 14:28:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75803 states to 75803 states and 110123 transitions. [2023-12-20 14:28:42,439 INFO L78 Accepts]: Start accepts. Automaton has 75803 states and 110123 transitions. Word has length 100 [2023-12-20 14:28:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:42,440 INFO L495 AbstractCegarLoop]: Abstraction has 75803 states and 110123 transitions. [2023-12-20 14:28:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 14:28:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 75803 states and 110123 transitions. [2023-12-20 14:28:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:42,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:42,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:42,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:28:42,447 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:42,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 50572322, now seen corresponding path program 1 times [2023-12-20 14:28:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410033028] [2023-12-20 14:28:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:28:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:42,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410033028] [2023-12-20 14:28:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410033028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567017445] [2023-12-20 14:28:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:42,653 INFO L87 Difference]: Start difference. First operand 75803 states and 110123 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 14:28:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:46,514 INFO L93 Difference]: Finished difference Result 171435 states and 250035 transitions. [2023-12-20 14:28:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:46,700 INFO L225 Difference]: With dead ends: 171435 [2023-12-20 14:28:46,701 INFO L226 Difference]: Without dead ends: 157161 [2023-12-20 14:28:46,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:46,736 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10038 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10038 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:46,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10038 Valid, 4489 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157161 states. [2023-12-20 14:28:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157161 to 90075. [2023-12-20 14:28:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90075 states, 90073 states have (on average 1.45209996336305) internal successors, (130795), 90074 states have internal predecessors, (130795), 0 states have call successors, (0), 0 states 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 14:28:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90075 states to 90075 states and 130795 transitions. [2023-12-20 14:28:49,763 INFO L78 Accepts]: Start accepts. Automaton has 90075 states and 130795 transitions. Word has length 100 [2023-12-20 14:28:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 90075 states and 130795 transitions. [2023-12-20 14:28:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 14:28:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 90075 states and 130795 transitions. [2023-12-20 14:28:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:49,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:49,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:49,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:28:49,770 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:49,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash 939305762, now seen corresponding path program 1 times [2023-12-20 14:28:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87462814] [2023-12-20 14:28:49,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:28:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:49,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87462814] [2023-12-20 14:28:49,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87462814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:49,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:49,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844528839] [2023-12-20 14:28:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:49,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:49,936 INFO L87 Difference]: Start difference. First operand 90075 states and 130795 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 14:28:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:28:54,279 INFO L93 Difference]: Finished difference Result 185707 states and 270707 transitions. [2023-12-20 14:28:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:28:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:28:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:28:54,587 INFO L225 Difference]: With dead ends: 185707 [2023-12-20 14:28:54,587 INFO L226 Difference]: Without dead ends: 171433 [2023-12-20 14:28:54,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:28:54,627 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:28:54,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:28:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171433 states. [2023-12-20 14:28:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171433 to 104347. [2023-12-20 14:28:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104347 states, 104345 states have (on average 1.4515980641142365) internal successors, (151467), 104346 states have internal predecessors, (151467), 0 states have call successors, (0), 0 states 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 14:28:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104347 states to 104347 states and 151467 transitions. [2023-12-20 14:28:58,429 INFO L78 Accepts]: Start accepts. Automaton has 104347 states and 151467 transitions. Word has length 100 [2023-12-20 14:28:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:28:58,430 INFO L495 AbstractCegarLoop]: Abstraction has 104347 states and 151467 transitions. [2023-12-20 14:28:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 14:28:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 104347 states and 151467 transitions. [2023-12-20 14:28:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:28:58,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:28:58,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:28:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:28:58,436 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:28:58,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:28:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash 676228386, now seen corresponding path program 1 times [2023-12-20 14:28:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:28:58,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67494592] [2023-12-20 14:28:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:28:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:28:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:28:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:28:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:28:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67494592] [2023-12-20 14:28:58,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67494592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:28:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:28:58,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:28:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921677829] [2023-12-20 14:28:58,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:28:58,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:28:58,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:28:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:28:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:28:58,627 INFO L87 Difference]: Start difference. First operand 104347 states and 151467 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 14:29:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:03,668 INFO L93 Difference]: Finished difference Result 199979 states and 291379 transitions. [2023-12-20 14:29:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:29:03,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:29:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:03,896 INFO L225 Difference]: With dead ends: 199979 [2023-12-20 14:29:03,897 INFO L226 Difference]: Without dead ends: 185705 [2023-12-20 14:29:03,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:29:03,946 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9791 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9791 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:03,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 4715 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:29:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185705 states. [2023-12-20 14:29:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185705 to 118619. [2023-12-20 14:29:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.4512169419223213) internal successors, (172139), 118618 states have internal predecessors, (172139), 0 states have call successors, (0), 0 states 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 14:29:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 172139 transitions. [2023-12-20 14:29:08,836 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 172139 transitions. Word has length 100 [2023-12-20 14:29:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:08,837 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 172139 transitions. [2023-12-20 14:29:08,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 14:29:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 172139 transitions. [2023-12-20 14:29:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:29:08,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:08,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:08,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:29:08,844 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:08,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1523502188, now seen corresponding path program 1 times [2023-12-20 14:29:08,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:08,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94077918] [2023-12-20 14:29:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:08,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94077918] [2023-12-20 14:29:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94077918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:08,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:08,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307029556] [2023-12-20 14:29:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:08,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:08,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:08,965 INFO L87 Difference]: Start difference. First operand 118619 states and 172139 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:29:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:12,585 INFO L93 Difference]: Finished difference Result 235679 states and 341805 transitions. [2023-12-20 14:29:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 14:29:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:12,728 INFO L225 Difference]: With dead ends: 235679 [2023-12-20 14:29:12,728 INFO L226 Difference]: Without dead ends: 118621 [2023-12-20 14:29:12,777 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 14:29:12,777 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:12,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118621 states. [2023-12-20 14:29:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118621 to 118619. [2023-12-20 14:29:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.4379979260982827) internal successors, (170571), 118618 states have internal predecessors, (170571), 0 states have call successors, (0), 0 states 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 14:29:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 170571 transitions. [2023-12-20 14:29:16,837 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 170571 transitions. Word has length 101 [2023-12-20 14:29:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:16,837 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 170571 transitions. [2023-12-20 14:29:16,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:29:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 170571 transitions. [2023-12-20 14:29:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:29:16,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:16,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:16,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:29:16,841 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:16,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1117544938, now seen corresponding path program 1 times [2023-12-20 14:29:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:16,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968994031] [2023-12-20 14:29:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:16,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968994031] [2023-12-20 14:29:16,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968994031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:16,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:16,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753663186] [2023-12-20 14:29:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:16,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:16,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:16,932 INFO L87 Difference]: Start difference. First operand 118619 states and 170571 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:29:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:18,764 INFO L93 Difference]: Finished difference Result 161077 states and 232068 transitions. [2023-12-20 14:29:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:18,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-20 14:29:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:18,808 INFO L225 Difference]: With dead ends: 161077 [2023-12-20 14:29:18,809 INFO L226 Difference]: Without dead ends: 44019 [2023-12-20 14:29:18,836 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 14:29:18,836 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:18,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44019 states. [2023-12-20 14:29:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44019 to 44012. [2023-12-20 14:29:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44012 states, 44010 states have (on average 1.4410361281526927) internal successors, (63420), 44011 states have internal predecessors, (63420), 0 states have call successors, (0), 0 states 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 14:29:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44012 states to 44012 states and 63420 transitions. [2023-12-20 14:29:20,224 INFO L78 Accepts]: Start accepts. Automaton has 44012 states and 63420 transitions. Word has length 102 [2023-12-20 14:29:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:20,225 INFO L495 AbstractCegarLoop]: Abstraction has 44012 states and 63420 transitions. [2023-12-20 14:29:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:29:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 44012 states and 63420 transitions. [2023-12-20 14:29:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:29:20,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:20,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:20,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:29:20,227 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:20,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1998084642, now seen corresponding path program 1 times [2023-12-20 14:29:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922738114] [2023-12-20 14:29:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922738114] [2023-12-20 14:29:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922738114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:20,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:20,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627318490] [2023-12-20 14:29:20,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:20,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:20,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:20,398 INFO L87 Difference]: Start difference. First operand 44012 states and 63420 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 14:29:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:21,121 INFO L93 Difference]: Finished difference Result 65232 states and 93886 transitions. [2023-12-20 14:29:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:21,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) Word has length 103 [2023-12-20 14:29:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:21,140 INFO L225 Difference]: With dead ends: 65232 [2023-12-20 14:29:21,141 INFO L226 Difference]: Without dead ends: 22798 [2023-12-20 14:29:21,150 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 14:29:21,151 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:21,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22798 states. [2023-12-20 14:29:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22798 to 22796. [2023-12-20 14:29:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22796 states, 22794 states have (on average 1.4338861103799245) internal successors, (32684), 22795 states have internal predecessors, (32684), 0 states have call successors, (0), 0 states 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 14:29:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22796 states to 22796 states and 32684 transitions. [2023-12-20 14:29:21,853 INFO L78 Accepts]: Start accepts. Automaton has 22796 states and 32684 transitions. Word has length 103 [2023-12-20 14:29:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:21,853 INFO L495 AbstractCegarLoop]: Abstraction has 22796 states and 32684 transitions. [2023-12-20 14:29:21,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 14:29:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand 22796 states and 32684 transitions. [2023-12-20 14:29:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 14:29:21,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:21,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:29:21,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:21,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash 537082416, now seen corresponding path program 1 times [2023-12-20 14:29:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:21,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10078484] [2023-12-20 14:29:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:21,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:21,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10078484] [2023-12-20 14:29:21,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10078484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459313756] [2023-12-20 14:29:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:21,938 INFO L87 Difference]: Start difference. First operand 22796 states and 32684 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:29:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:22,253 INFO L93 Difference]: Finished difference Result 33408 states and 47782 transitions. [2023-12-20 14:29:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-20 14:29:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:22,267 INFO L225 Difference]: With dead ends: 33408 [2023-12-20 14:29:22,267 INFO L226 Difference]: Without dead ends: 12190 [2023-12-20 14:29:22,279 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 14:29:22,280 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:22,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12190 states. [2023-12-20 14:29:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12190 to 12188. [2023-12-20 14:29:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12186 states have (on average 1.4321352371573937) internal successors, (17452), 12187 states have internal predecessors, (17452), 0 states have call successors, (0), 0 states 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 14:29:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 17452 transitions. [2023-12-20 14:29:22,739 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 17452 transitions. Word has length 105 [2023-12-20 14:29:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:22,739 INFO L495 AbstractCegarLoop]: Abstraction has 12188 states and 17452 transitions. [2023-12-20 14:29:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:29:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 17452 transitions. [2023-12-20 14:29:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 14:29:22,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:22,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:22,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:29:22,741 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash 980333502, now seen corresponding path program 1 times [2023-12-20 14:29:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292228513] [2023-12-20 14:29:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:22,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:22,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292228513] [2023-12-20 14:29:22,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292228513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:22,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:22,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:22,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680384566] [2023-12-20 14:29:22,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:22,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:22,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:22,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:22,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:22,821 INFO L87 Difference]: Start difference. First operand 12188 states and 17452 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:29:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:22,965 INFO L93 Difference]: Finished difference Result 17496 states and 24934 transitions. [2023-12-20 14:29:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:22,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-20 14:29:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:22,972 INFO L225 Difference]: With dead ends: 17496 [2023-12-20 14:29:22,972 INFO L226 Difference]: Without dead ends: 6886 [2023-12-20 14:29:22,978 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 14:29:22,978 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:22,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2023-12-20 14:29:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 6884. [2023-12-20 14:29:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6884 states, 6882 states have (on average 1.4391165358907294) internal successors, (9904), 6883 states have internal predecessors, (9904), 0 states have call successors, (0), 0 states 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 14:29:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 9904 transitions. [2023-12-20 14:29:23,221 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 9904 transitions. Word has length 107 [2023-12-20 14:29:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:23,221 INFO L495 AbstractCegarLoop]: Abstraction has 6884 states and 9904 transitions. [2023-12-20 14:29:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:29:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 9904 transitions. [2023-12-20 14:29:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 14:29:23,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:23,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:29:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:29:23,223 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:23,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1787844916, now seen corresponding path program 1 times [2023-12-20 14:29:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611274402] [2023-12-20 14:29:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611274402] [2023-12-20 14:29:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611274402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868239135] [2023-12-20 14:29:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:23,331 INFO L87 Difference]: Start difference. First operand 6884 states and 9904 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:29:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:23,436 INFO L93 Difference]: Finished difference Result 9540 states and 13612 transitions. [2023-12-20 14:29:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:23,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 14:29:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:23,440 INFO L225 Difference]: With dead ends: 9540 [2023-12-20 14:29:23,441 INFO L226 Difference]: Without dead ends: 4234 [2023-12-20 14:29:23,443 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 14:29:23,443 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:23,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2023-12-20 14:29:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4232. [2023-12-20 14:29:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 1.457210401891253) internal successors, (6164), 4231 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states 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 14:29:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6164 transitions. [2023-12-20 14:29:23,529 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6164 transitions. Word has length 109 [2023-12-20 14:29:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:23,529 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 6164 transitions. [2023-12-20 14:29:23,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:29:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6164 transitions. [2023-12-20 14:29:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 14:29:23,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:23,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:29:23,530 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:23,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1119023962, now seen corresponding path program 1 times [2023-12-20 14:29:23,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:23,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758395209] [2023-12-20 14:29:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:23,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758395209] [2023-12-20 14:29:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758395209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:29:23,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:29:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:29:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998842848] [2023-12-20 14:29:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:29:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:29:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:29:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:29:23,613 INFO L87 Difference]: Start difference. First operand 4232 states and 6164 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 14:29:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:23,676 INFO L93 Difference]: Finished difference Result 5562 states and 8002 transitions. [2023-12-20 14:29:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:29:23,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:29:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:23,679 INFO L225 Difference]: With dead ends: 5562 [2023-12-20 14:29:23,679 INFO L226 Difference]: Without dead ends: 2908 [2023-12-20 14:29:23,680 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 14:29:23,680 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:23,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2023-12-20 14:29:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2906. [2023-12-20 14:29:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2904 states have (on average 1.484504132231405) internal successors, (4311), 2905 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states 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 14:29:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4311 transitions. [2023-12-20 14:29:23,729 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4311 transitions. Word has length 111 [2023-12-20 14:29:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:23,729 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 4311 transitions. [2023-12-20 14:29:23,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 14:29:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4311 transitions. [2023-12-20 14:29:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 14:29:23,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:23,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:29:23,730 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:23,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 612202856, now seen corresponding path program 1 times [2023-12-20 14:29:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134660495] [2023-12-20 14:29:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:29:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134660495] [2023-12-20 14:29:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134660495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911953509] [2023-12-20 14:29:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:23,888 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 14:29:23,889 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 14:29:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:24,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 14:29:24,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:29:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:29:24,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:29:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:29:24,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911953509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:29:24,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:29:24,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 14:29:24,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272464131] [2023-12-20 14:29:24,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:29:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:29:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:29:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:29:24,571 INFO L87 Difference]: Start difference. First operand 2906 states and 4311 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 14:29:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:24,837 INFO L93 Difference]: Finished difference Result 6113 states and 8612 transitions. [2023-12-20 14:29:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:29:24,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 14:29:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:24,843 INFO L225 Difference]: With dead ends: 6113 [2023-12-20 14:29:24,843 INFO L226 Difference]: Without dead ends: 4785 [2023-12-20 14:29:24,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:29:24,845 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 1603 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:24,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 3476 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:29:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2023-12-20 14:29:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4698. [2023-12-20 14:29:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 4696 states have (on average 1.4060902896081773) internal successors, (6603), 4697 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states 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 14:29:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6603 transitions. [2023-12-20 14:29:25,005 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6603 transitions. Word has length 113 [2023-12-20 14:29:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:25,006 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 6603 transitions. [2023-12-20 14:29:25,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 14:29:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6603 transitions. [2023-12-20 14:29:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 14:29:25,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:25,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:25,019 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 14:29:25,214 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,SelfDestructingSolverStorable28 [2023-12-20 14:29:25,214 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:25,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1129829782, now seen corresponding path program 1 times [2023-12-20 14:29:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256925748] [2023-12-20 14:29:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256925748] [2023-12-20 14:29:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256925748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366276830] [2023-12-20 14:29:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:26,399 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 14:29:26,420 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 14:29:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:26,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:29:26,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:29:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:27,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:29:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366276830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:29:28,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:29:28,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 14:29:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747101968] [2023-12-20 14:29:28,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:29:28,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:29:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:29:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:29:28,063 INFO L87 Difference]: Start difference. First operand 4698 states and 6603 transitions. Second operand has 28 states, 28 states have (on average 10.964285714285714) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 14:29:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:31,879 INFO L93 Difference]: Finished difference Result 20290 states and 27152 transitions. [2023-12-20 14:29:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 14:29:31,880 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.964285714285714) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 14:29:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:31,894 INFO L225 Difference]: With dead ends: 20290 [2023-12-20 14:29:31,894 INFO L226 Difference]: Without dead ends: 17256 [2023-12-20 14:29:31,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1063, Invalid=4339, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 14:29:31,900 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 21893 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21893 SdHoareTripleChecker+Valid, 9814 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:31,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21893 Valid, 9814 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:29:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17256 states. [2023-12-20 14:29:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17256 to 16052. [2023-12-20 14:29:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16052 states, 16050 states have (on average 1.3336448598130841) internal successors, (21405), 16051 states have internal predecessors, (21405), 0 states have call successors, (0), 0 states 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 14:29:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16052 states to 16052 states and 21405 transitions. [2023-12-20 14:29:32,442 INFO L78 Accepts]: Start accepts. Automaton has 16052 states and 21405 transitions. Word has length 114 [2023-12-20 14:29:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:32,443 INFO L495 AbstractCegarLoop]: Abstraction has 16052 states and 21405 transitions. [2023-12-20 14:29:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.964285714285714) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 14:29:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 16052 states and 21405 transitions. [2023-12-20 14:29:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 14:29:32,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:32,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:32,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:29:32,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:32,645 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:32,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 809282788, now seen corresponding path program 1 times [2023-12-20 14:29:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190626159] [2023-12-20 14:29:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:32,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:32,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190626159] [2023-12-20 14:29:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190626159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:32,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142726253] [2023-12-20 14:29:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:32,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:32,986 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 14:29:33,009 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 14:29:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:33,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:29:33,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:29:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:33,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:29:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:35,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142726253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:29:35,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:29:35,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 14:29:35,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845310731] [2023-12-20 14:29:35,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:29:35,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 14:29:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 14:29:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:29:35,037 INFO L87 Difference]: Start difference. First operand 16052 states and 21405 transitions. Second operand has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 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 14:29:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:38,669 INFO L93 Difference]: Finished difference Result 68936 states and 89904 transitions. [2023-12-20 14:29:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 14:29:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 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 114 [2023-12-20 14:29:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:38,725 INFO L225 Difference]: With dead ends: 68936 [2023-12-20 14:29:38,725 INFO L226 Difference]: Without dead ends: 54824 [2023-12-20 14:29:38,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=956, Invalid=4156, Unknown=0, NotChecked=0, Total=5112 [2023-12-20 14:29:38,740 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 19709 mSDsluCounter, 8482 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19709 SdHoareTripleChecker+Valid, 10027 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:38,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19709 Valid, 10027 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:29:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54824 states. [2023-12-20 14:29:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54824 to 51958. [2023-12-20 14:29:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51958 states, 51956 states have (on average 1.2910539687427824) internal successors, (67078), 51957 states have internal predecessors, (67078), 0 states have call successors, (0), 0 states 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 14:29:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51958 states to 51958 states and 67078 transitions. [2023-12-20 14:29:40,636 INFO L78 Accepts]: Start accepts. Automaton has 51958 states and 67078 transitions. Word has length 114 [2023-12-20 14:29:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:40,636 INFO L495 AbstractCegarLoop]: Abstraction has 51958 states and 67078 transitions. [2023-12-20 14:29:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 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 14:29:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 51958 states and 67078 transitions. [2023-12-20 14:29:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:29:40,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:40,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:40,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 14:29:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:40,847 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:40,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2093988122, now seen corresponding path program 1 times [2023-12-20 14:29:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261890657] [2023-12-20 14:29:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261890657] [2023-12-20 14:29:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261890657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575871017] [2023-12-20 14:29:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:41,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:41,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:41,893 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 14:29:41,918 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 14:29:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:42,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:29:42,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:29:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:42,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:29:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575871017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:29:43,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:29:43,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-12-20 14:29:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636676350] [2023-12-20 14:29:43,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:29:43,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 14:29:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 14:29:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2023-12-20 14:29:43,888 INFO L87 Difference]: Start difference. First operand 51958 states and 67078 transitions. Second operand has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 31 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) [2023-12-20 14:29:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:46,482 INFO L93 Difference]: Finished difference Result 103088 states and 132267 transitions. [2023-12-20 14:29:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:29:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 31 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) Word has length 115 [2023-12-20 14:29:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:46,540 INFO L225 Difference]: With dead ends: 103088 [2023-12-20 14:29:46,540 INFO L226 Difference]: Without dead ends: 55654 [2023-12-20 14:29:46,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=470, Invalid=1692, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 14:29:46,562 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 15201 mSDsluCounter, 9826 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15201 SdHoareTripleChecker+Valid, 11369 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:46,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15201 Valid, 11369 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:29:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55654 states. [2023-12-20 14:29:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55654 to 48518. [2023-12-20 14:29:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48518 states, 48516 states have (on average 1.2774342484953418) internal successors, (61976), 48517 states have internal predecessors, (61976), 0 states have call successors, (0), 0 states 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 14:29:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48518 states to 48518 states and 61976 transitions. [2023-12-20 14:29:48,694 INFO L78 Accepts]: Start accepts. Automaton has 48518 states and 61976 transitions. Word has length 115 [2023-12-20 14:29:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:48,695 INFO L495 AbstractCegarLoop]: Abstraction has 48518 states and 61976 transitions. [2023-12-20 14:29:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 31 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) [2023-12-20 14:29:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 48518 states and 61976 transitions. [2023-12-20 14:29:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 14:29:48,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:48,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:48,707 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 14:29:48,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:48,899 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:48,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1234820908, now seen corresponding path program 1 times [2023-12-20 14:29:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743878469] [2023-12-20 14:29:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743878469] [2023-12-20 14:29:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743878469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021461554] [2023-12-20 14:29:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:49,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:49,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:49,224 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 14:29:49,248 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 14:29:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:49,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:29:49,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:29:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:49,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:29:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021461554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:29:50,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:29:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-20 14:29:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586481762] [2023-12-20 14:29:50,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:29:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 14:29:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:29:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 14:29:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-20 14:29:50,678 INFO L87 Difference]: Start difference. First operand 48518 states and 61976 transitions. Second operand has 23 states, 23 states have (on average 11.217391304347826) internal successors, (258), 22 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 14:29:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:29:53,600 INFO L93 Difference]: Finished difference Result 104146 states and 132433 transitions. [2023-12-20 14:29:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:29:53,601 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.217391304347826) internal successors, (258), 22 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-20 14:29:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:29:53,653 INFO L225 Difference]: With dead ends: 104146 [2023-12-20 14:29:53,654 INFO L226 Difference]: Without dead ends: 59260 [2023-12-20 14:29:53,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 14:29:53,666 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 14260 mSDsluCounter, 6515 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14260 SdHoareTripleChecker+Valid, 8081 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:29:53,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14260 Valid, 8081 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:29:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59260 states. [2023-12-20 14:29:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59260 to 57880. [2023-12-20 14:29:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57880 states, 57878 states have (on average 1.2734026745913818) internal successors, (73702), 57879 states have internal predecessors, (73702), 0 states have call successors, (0), 0 states 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 14:29:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57880 states to 57880 states and 73702 transitions. [2023-12-20 14:29:55,936 INFO L78 Accepts]: Start accepts. Automaton has 57880 states and 73702 transitions. Word has length 116 [2023-12-20 14:29:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:29:55,936 INFO L495 AbstractCegarLoop]: Abstraction has 57880 states and 73702 transitions. [2023-12-20 14:29:55,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.217391304347826) internal successors, (258), 22 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 14:29:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 57880 states and 73702 transitions. [2023-12-20 14:29:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 14:29:55,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:29:55,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:55,945 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 14:29:56,144 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,SelfDestructingSolverStorable32 [2023-12-20 14:29:56,144 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:29:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:29:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash -470142522, now seen corresponding path program 1 times [2023-12-20 14:29:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:29:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171528978] [2023-12-20 14:29:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:29:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:29:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:29:56,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171528978] [2023-12-20 14:29:56,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171528978] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:29:56,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132974333] [2023-12-20 14:29:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:29:56,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:29:56,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:29:56,675 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 14:29:56,678 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 14:29:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:29:56,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:29:56,826 INFO L285 TraceCheckSpWp]: Computing forward predicates...