/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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:58:56,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:58:56,793 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 12:58:56,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:58:56,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:58:56,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:58:56,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:58:56,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:58:56,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:58:56,830 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:58:56,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:58:56,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:58:56,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:58:56,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:58:56,833 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:58:56,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:58:56,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:58:56,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:58:56,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:58:56,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:58:56,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:58:56,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:58:56,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:58:56,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:58:56,836 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:58:56,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:58:56,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:58:56,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:58:56,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:58:56,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:58:56,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:58:56,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:58:56,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:58:56,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:58:56,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:58:56,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:58:56,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:58:56,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:58:56,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:58:56,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:58:56,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:58:56,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:58:56,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:58:56,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:58:57,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:58:57,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:58:57,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:58:57,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:58:57,104 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:58:57,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 12:58:58,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:58:58,916 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:58:58,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 12:58:58,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c6f8767/43d8c1a2c18245798a2c2a824f462fcc/FLAGba22254e2 [2023-12-20 12:58:58,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c6f8767/43d8c1a2c18245798a2c2a824f462fcc [2023-12-20 12:58:58,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:58:58,972 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:58:58,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:58:58,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:58:58,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:58:58,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:58:58" (1/1) ... [2023-12-20 12:58:58,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726fa433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:58:58, skipping insertion in model container [2023-12-20 12:58:58,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:58:58" (1/1) ... [2023-12-20 12:58:59,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:58:59,397 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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[8749,8762] [2023-12-20 12:58:59,486 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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15810,15823] [2023-12-20 12:59:00,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:59:00,096 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:59:00,129 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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[8749,8762] [2023-12-20 12:59:00,142 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.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15810,15823] [2023-12-20 12:59:00,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:59:00,573 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:59:00,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00 WrapperNode [2023-12-20 12:59:00,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:59:00,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:59:00,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:59:00,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:59:00,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:00,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:00,911 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5036 [2023-12-20 12:59:00,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:59:00,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:59:00,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:59:00,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:59:00,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:00,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:00,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,170 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 12:59:01,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:59:01,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:59:01,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:59:01,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:59:01,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (1/1) ... [2023-12-20 12:59:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:59:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:01,490 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 12:59:01,518 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 12:59:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:59:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:59:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:59:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:59:01,621 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:59:01,623 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:59:05,290 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:59:05,338 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:59:05,338 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:59:05,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:59:05 BoogieIcfgContainer [2023-12-20 12:59:05,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:59:05,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:59:05,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:59:05,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:59:05,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:58:58" (1/3) ... [2023-12-20 12:59:05,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bfbe9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:59:05, skipping insertion in model container [2023-12-20 12:59:05,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:59:00" (2/3) ... [2023-12-20 12:59:05,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bfbe9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:59:05, skipping insertion in model container [2023-12-20 12:59:05,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:59:05" (3/3) ... [2023-12-20 12:59:05,349 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 12:59:05,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:59:05,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:59:05,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:59:05,427 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;@6ee298b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:59:05,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:59:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 12:59:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 12:59:05,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:05,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:05,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-12-20 12:59:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016467116] [2023-12-20 12:59:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:05,640 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 12:59:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:05,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016467116] [2023-12-20 12:59:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016467116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:05,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:05,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:59:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048276193] [2023-12-20 12:59:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:59:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:59:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:59:05,689 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:59:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:05,777 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-20 12:59:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:59:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 12:59:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:05,803 INFO L225 Difference]: With dead ends: 1616 [2023-12-20 12:59:05,803 INFO L226 Difference]: Without dead ends: 818 [2023-12-20 12:59:05,812 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 12:59:05,815 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:05,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-20 12:59:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-20 12:59:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 12:59:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-20 12:59:05,898 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-20 12:59:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:05,898 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-20 12:59:05,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:59:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-20 12:59:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 12:59:05,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:05,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:05,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:59:05,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:05,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-20 12:59:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335191939] [2023-12-20 12:59:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:06,163 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 12:59:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335191939] [2023-12-20 12:59:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335191939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:06,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:59:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777605237] [2023-12-20 12:59:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:59:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:59:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:59:06,167 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:59:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:06,248 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-20 12:59:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:59:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 12:59:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:06,254 INFO L225 Difference]: With dead ends: 858 [2023-12-20 12:59:06,254 INFO L226 Difference]: Without dead ends: 818 [2023-12-20 12:59:06,255 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 12:59:06,256 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:06,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-20 12:59:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-20 12:59:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 12:59:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-20 12:59:06,278 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-20 12:59:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:06,278 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-20 12:59:06,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:59:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-20 12:59:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 12:59:06,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:06,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:06,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:59:06,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:06,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-20 12:59:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154531011] [2023-12-20 12:59:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:06,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:06,460 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 12:59:06,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:06,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154531011] [2023-12-20 12:59:06,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154531011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:06,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:06,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409056605] [2023-12-20 12:59:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:06,464 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:06,672 INFO L93 Difference]: Finished difference Result 1114 states and 1997 transitions. [2023-12-20 12:59:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 12:59:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 12:59:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:06,679 INFO L225 Difference]: With dead ends: 1114 [2023-12-20 12:59:06,679 INFO L226 Difference]: Without dead ends: 1077 [2023-12-20 12:59:06,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 12:59:06,683 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:06,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:59:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-20 12:59:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 853. [2023-12-20 12:59:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8578143360752057) internal successors, (1581), 852 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states 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 12:59:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1581 transitions. [2023-12-20 12:59:06,708 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1581 transitions. Word has length 41 [2023-12-20 12:59:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:06,714 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1581 transitions. [2023-12-20 12:59:06,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1581 transitions. [2023-12-20 12:59:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 12:59:06,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:06,719 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] [2023-12-20 12:59:06,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:59:06,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:06,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-20 12:59:06,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:06,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124270585] [2023-12-20 12:59:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:06,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:06,793 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 12:59:06,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124270585] [2023-12-20 12:59:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124270585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:06,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:06,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495432591] [2023-12-20 12:59:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:06,797 INFO L87 Difference]: Start difference. First operand 853 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 12:59:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:06,835 INFO L93 Difference]: Finished difference Result 986 states and 1792 transitions. [2023-12-20 12:59:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 12:59:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:06,840 INFO L225 Difference]: With dead ends: 986 [2023-12-20 12:59:06,840 INFO L226 Difference]: Without dead ends: 914 [2023-12-20 12:59:06,841 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 12:59:06,847 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:06,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-20 12:59:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2023-12-20 12:59:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8381057268722467) internal successors, (1669), 909 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 12:59:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1669 transitions. [2023-12-20 12:59:06,868 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1669 transitions. Word has length 43 [2023-12-20 12:59:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:06,869 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1669 transitions. [2023-12-20 12:59:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 12:59:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1669 transitions. [2023-12-20 12:59:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 12:59:06,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:06,870 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] [2023-12-20 12:59:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:59:06,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:06,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-20 12:59:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670695036] [2023-12-20 12:59:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,078 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 12:59:07,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670695036] [2023-12-20 12:59:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670695036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406109540] [2023-12-20 12:59:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:07,081 INFO L87 Difference]: Start difference. First operand 910 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 12:59:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:07,204 INFO L93 Difference]: Finished difference Result 1041 states and 1873 transitions. [2023-12-20 12:59:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 12:59:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 12:59:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:07,209 INFO L225 Difference]: With dead ends: 1041 [2023-12-20 12:59:07,209 INFO L226 Difference]: Without dead ends: 912 [2023-12-20 12:59:07,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:59:07,212 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:07,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1684 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:07,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-12-20 12:59:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2023-12-20 12:59:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states 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 12:59:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2023-12-20 12:59:07,230 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 43 [2023-12-20 12:59:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:07,232 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2023-12-20 12:59:07,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 12:59:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2023-12-20 12:59:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 12:59:07,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:07,233 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] [2023-12-20 12:59:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:59:07,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:07,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-20 12:59:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:07,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363594721] [2023-12-20 12:59:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,440 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 12:59:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363594721] [2023-12-20 12:59:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363594721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:59:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838182908] [2023-12-20 12:59:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:59:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:59:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:59:07,442 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 12:59:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:07,480 INFO L93 Difference]: Finished difference Result 918 states and 1676 transitions. [2023-12-20 12:59:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:59:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-20 12:59:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:07,484 INFO L225 Difference]: With dead ends: 918 [2023-12-20 12:59:07,484 INFO L226 Difference]: Without dead ends: 916 [2023-12-20 12:59:07,484 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 12:59:07,485 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 12:59:07,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-20 12:59:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2023-12-20 12:59:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.831140350877193) internal successors, (1670), 913 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 12:59:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1670 transitions. [2023-12-20 12:59:07,511 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1670 transitions. Word has length 44 [2023-12-20 12:59:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1670 transitions. [2023-12-20 12:59:07,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 12:59:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1670 transitions. [2023-12-20 12:59:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 12:59:07,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:07,513 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] [2023-12-20 12:59:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:59:07,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-20 12:59:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288958563] [2023-12-20 12:59:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,583 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 12:59:07,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288958563] [2023-12-20 12:59:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288958563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:07,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578095961] [2023-12-20 12:59:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:07,585 INFO L87 Difference]: Start difference. First operand 914 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:07,613 INFO L93 Difference]: Finished difference Result 1164 states and 2050 transitions. [2023-12-20 12:59:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 12:59:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:07,619 INFO L225 Difference]: With dead ends: 1164 [2023-12-20 12:59:07,619 INFO L226 Difference]: Without dead ends: 1031 [2023-12-20 12:59:07,620 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 12:59:07,621 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 12:59:07,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-20 12:59:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2023-12-20 12:59:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1027 states have (on average 1.7925998052580332) internal successors, (1841), 1028 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states 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 12:59:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1841 transitions. [2023-12-20 12:59:07,640 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1841 transitions. Word has length 45 [2023-12-20 12:59:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:07,640 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1841 transitions. [2023-12-20 12:59:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1841 transitions. [2023-12-20 12:59:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 12:59:07,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:07,642 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] [2023-12-20 12:59:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:59:07,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-20 12:59:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581553858] [2023-12-20 12:59:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,694 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 12:59:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581553858] [2023-12-20 12:59:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581553858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100353655] [2023-12-20 12:59:07,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:07,696 INFO L87 Difference]: Start difference. First operand 1029 states and 1841 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:07,728 INFO L93 Difference]: Finished difference Result 1493 states and 2535 transitions. [2023-12-20 12:59:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:07,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 12:59:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:07,733 INFO L225 Difference]: With dead ends: 1493 [2023-12-20 12:59:07,733 INFO L226 Difference]: Without dead ends: 1245 [2023-12-20 12:59:07,734 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 12:59:07,734 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 12:59:07,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-20 12:59:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2023-12-20 12:59:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.7332796132151491) internal successors, (2151), 1242 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states 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 12:59:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2151 transitions. [2023-12-20 12:59:07,761 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2151 transitions. Word has length 45 [2023-12-20 12:59:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:07,762 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 2151 transitions. [2023-12-20 12:59:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2151 transitions. [2023-12-20 12:59:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 12:59:07,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:07,763 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] [2023-12-20 12:59:07,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:59:07,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:07,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-20 12:59:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:07,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737748658] [2023-12-20 12:59:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:07,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,813 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 12:59:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737748658] [2023-12-20 12:59:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737748658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221903429] [2023-12-20 12:59:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:07,815 INFO L87 Difference]: Start difference. First operand 1243 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:07,855 INFO L93 Difference]: Finished difference Result 2103 states and 3409 transitions. [2023-12-20 12:59:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 12:59:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:07,861 INFO L225 Difference]: With dead ends: 2103 [2023-12-20 12:59:07,861 INFO L226 Difference]: Without dead ends: 1641 [2023-12-20 12:59:07,862 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 12:59:07,863 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 12:59:07,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-20 12:59:07,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1639. [2023-12-20 12:59:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1637 states have (on average 1.653634697617593) internal successors, (2707), 1638 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states 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 12:59:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2707 transitions. [2023-12-20 12:59:07,914 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2707 transitions. Word has length 45 [2023-12-20 12:59:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2707 transitions. [2023-12-20 12:59:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:59:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2707 transitions. [2023-12-20 12:59:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 12:59:07,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:07,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:59:07,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:07,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-20 12:59:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230710272] [2023-12-20 12:59:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:07,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:07,954 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 12:59:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:07,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230710272] [2023-12-20 12:59:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230710272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:07,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:07,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567331528] [2023-12-20 12:59:07,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:07,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:07,956 INFO L87 Difference]: Start difference. First operand 1639 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:08,009 INFO L93 Difference]: Finished difference Result 2542 states and 4041 transitions. [2023-12-20 12:59:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:08,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-20 12:59:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:08,017 INFO L225 Difference]: With dead ends: 2542 [2023-12-20 12:59:08,017 INFO L226 Difference]: Without dead ends: 2043 [2023-12-20 12:59:08,018 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 12:59:08,019 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 12:59:08,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2023-12-20 12:59:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2041. [2023-12-20 12:59:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2039 states have (on average 1.6071603727317312) internal successors, (3277), 2040 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states 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 12:59:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 3277 transitions. [2023-12-20 12:59:08,068 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 3277 transitions. Word has length 47 [2023-12-20 12:59:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:08,069 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 3277 transitions. [2023-12-20 12:59:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 3277 transitions. [2023-12-20 12:59:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:59:08,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:08,070 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 12:59:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:59:08,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:08,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash -961608653, now seen corresponding path program 1 times [2023-12-20 12:59:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133785921] [2023-12-20 12:59:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:08,118 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 12:59:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133785921] [2023-12-20 12:59:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133785921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:59:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579532233] [2023-12-20 12:59:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:08,120 INFO L87 Difference]: Start difference. First operand 2041 states and 3277 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 12:59:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:11,447 INFO L93 Difference]: Finished difference Result 3545 states and 6150 transitions. [2023-12-20 12:59:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:11,447 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 12:59:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:11,457 INFO L225 Difference]: With dead ends: 3545 [2023-12-20 12:59:11,457 INFO L226 Difference]: Without dead ends: 2792 [2023-12-20 12:59:11,461 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 12:59:11,461 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 841 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:11,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 160 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 12:59:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-20 12:59:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2792. [2023-12-20 12:59:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2790 states have (on average 1.6673835125448029) internal successors, (4652), 2791 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states 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 12:59:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4652 transitions. [2023-12-20 12:59:11,526 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4652 transitions. Word has length 60 [2023-12-20 12:59:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:11,526 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4652 transitions. [2023-12-20 12:59:11,527 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 12:59:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4652 transitions. [2023-12-20 12:59:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 12:59:11,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:11,528 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] [2023-12-20 12:59:11,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:59:11,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:11,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-20 12:59:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987151598] [2023-12-20 12:59:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:59:11,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987151598] [2023-12-20 12:59:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987151598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:11,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:11,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:11,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056817946] [2023-12-20 12:59:11,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:11,638 INFO L87 Difference]: Start difference. First operand 2792 states and 4652 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:59:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:11,814 INFO L93 Difference]: Finished difference Result 8098 states and 12265 transitions. [2023-12-20 12:59:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 12:59:11,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 12:59:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:11,836 INFO L225 Difference]: With dead ends: 8098 [2023-12-20 12:59:11,836 INFO L226 Difference]: Without dead ends: 6840 [2023-12-20 12:59:11,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 12:59:11,841 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4657 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:11,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3329 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2023-12-20 12:59:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 4048. [2023-12-20 12:59:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4046 states have (on average 1.5907068709836876) internal successors, (6436), 4047 states have internal predecessors, (6436), 0 states have call successors, (0), 0 states 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 12:59:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6436 transitions. [2023-12-20 12:59:12,030 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6436 transitions. Word has length 61 [2023-12-20 12:59:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:12,030 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 6436 transitions. [2023-12-20 12:59:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:59:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6436 transitions. [2023-12-20 12:59:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 12:59:12,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:12,031 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] [2023-12-20 12:59:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:59:12,031 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:12,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-20 12:59:12,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662993222] [2023-12-20 12:59:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:59:12,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:12,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662993222] [2023-12-20 12:59:12,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662993222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:12,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:12,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129930802] [2023-12-20 12:59:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:12,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:12,122 INFO L87 Difference]: Start difference. First operand 4048 states and 6436 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:12,328 INFO L93 Difference]: Finished difference Result 9354 states and 14049 transitions. [2023-12-20 12:59:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 12:59:12,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 12:59:12,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:12,361 INFO L225 Difference]: With dead ends: 9354 [2023-12-20 12:59:12,361 INFO L226 Difference]: Without dead ends: 8096 [2023-12-20 12:59:12,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 12:59:12,366 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:12,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:59:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2023-12-20 12:59:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 5936. [2023-12-20 12:59:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5934 states have (on average 1.5321873946747557) internal successors, (9092), 5935 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states 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 12:59:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9092 transitions. [2023-12-20 12:59:12,555 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9092 transitions. Word has length 61 [2023-12-20 12:59:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:12,555 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9092 transitions. [2023-12-20 12:59:12,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9092 transitions. [2023-12-20 12:59:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 12:59:12,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:12,557 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] [2023-12-20 12:59:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:59:12,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:12,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-20 12:59:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699888193] [2023-12-20 12:59:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 12:59:12,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699888193] [2023-12-20 12:59:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699888193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:12,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:12,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370613237] [2023-12-20 12:59:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:12,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:12,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:12,676 INFO L87 Difference]: Start difference. First operand 5936 states and 9092 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:12,957 INFO L93 Difference]: Finished difference Result 10610 states and 15833 transitions. [2023-12-20 12:59:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 12:59:12,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 12:59:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:12,974 INFO L225 Difference]: With dead ends: 10610 [2023-12-20 12:59:12,974 INFO L226 Difference]: Without dead ends: 9352 [2023-12-20 12:59:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 12:59:12,979 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4663 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 3316 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:59:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2023-12-20 12:59:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 7192. [2023-12-20 12:59:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7192 states, 7190 states have (on average 1.5126564673157163) internal successors, (10876), 7191 states have internal predecessors, (10876), 0 states have call successors, (0), 0 states 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 12:59:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 10876 transitions. [2023-12-20 12:59:13,171 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 10876 transitions. Word has length 61 [2023-12-20 12:59:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:13,172 INFO L495 AbstractCegarLoop]: Abstraction has 7192 states and 10876 transitions. [2023-12-20 12:59:13,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 10876 transitions. [2023-12-20 12:59:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 12:59:13,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:13,177 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] [2023-12-20 12:59:13,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:59:13,177 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:13,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-20 12:59:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851539777] [2023-12-20 12:59:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851539777] [2023-12-20 12:59:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851539777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019086097] [2023-12-20 12:59:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:13,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:13,272 INFO L87 Difference]: Start difference. First operand 7192 states and 10876 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 12:59:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:13,404 INFO L93 Difference]: Finished difference Result 11245 states and 16728 transitions. [2023-12-20 12:59:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 12:59:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:13,412 INFO L225 Difference]: With dead ends: 11245 [2023-12-20 12:59:13,412 INFO L226 Difference]: Without dead ends: 5587 [2023-12-20 12:59:13,419 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 12:59:13,420 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 12:59:13,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-12-20 12:59:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2023-12-20 12:59:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.5441518896650546) internal successors, (8621), 5584 states have internal predecessors, (8621), 0 states have call successors, (0), 0 states 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 12:59:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 8621 transitions. [2023-12-20 12:59:13,537 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 8621 transitions. Word has length 63 [2023-12-20 12:59:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:13,537 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 8621 transitions. [2023-12-20 12:59:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 12:59:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 8621 transitions. [2023-12-20 12:59:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 12:59:13,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:13,539 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] [2023-12-20 12:59:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:59:13,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:13,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-20 12:59:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096233265] [2023-12-20 12:59:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:59:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096233265] [2023-12-20 12:59:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096233265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:13,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:13,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 12:59:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685760669] [2023-12-20 12:59:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 12:59:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 12:59:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:59:13,639 INFO L87 Difference]: Start difference. First operand 5585 states and 8621 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:13,849 INFO L93 Difference]: Finished difference Result 9179 states and 13810 transitions. [2023-12-20 12:59:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 12:59:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 12:59:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:13,863 INFO L225 Difference]: With dead ends: 9179 [2023-12-20 12:59:13,863 INFO L226 Difference]: Without dead ends: 8281 [2023-12-20 12:59:13,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 12:59:13,867 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:13,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:59:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-12-20 12:59:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6481. [2023-12-20 12:59:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6479 states have (on average 1.5281679271492514) internal successors, (9901), 6480 states have internal predecessors, (9901), 0 states have call successors, (0), 0 states 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 12:59:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 9901 transitions. [2023-12-20 12:59:14,048 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 9901 transitions. Word has length 63 [2023-12-20 12:59:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:14,048 INFO L495 AbstractCegarLoop]: Abstraction has 6481 states and 9901 transitions. [2023-12-20 12:59:14,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 9901 transitions. [2023-12-20 12:59:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 12:59:14,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:14,050 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] [2023-12-20 12:59:14,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:59:14,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:14,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-20 12:59:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:14,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398229355] [2023-12-20 12:59:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398229355] [2023-12-20 12:59:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398229355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:14,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:14,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261843649] [2023-12-20 12:59:14,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:14,129 INFO L87 Difference]: Start difference. First operand 6481 states and 9901 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:14,200 INFO L93 Difference]: Finished difference Result 8949 states and 13423 transitions. [2023-12-20 12:59:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:14,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 12:59:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:14,206 INFO L225 Difference]: With dead ends: 8949 [2023-12-20 12:59:14,207 INFO L226 Difference]: Without dead ends: 4019 [2023-12-20 12:59:14,212 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 12:59:14,212 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 12:59:14,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-12-20 12:59:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4017. [2023-12-20 12:59:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4015 states have (on average 1.5783312577833126) internal successors, (6337), 4016 states have internal predecessors, (6337), 0 states have call successors, (0), 0 states 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 12:59:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6337 transitions. [2023-12-20 12:59:14,298 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6337 transitions. Word has length 64 [2023-12-20 12:59:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:14,298 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 6337 transitions. [2023-12-20 12:59:14,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6337 transitions. [2023-12-20 12:59:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 12:59:14,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:14,299 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] [2023-12-20 12:59:14,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 12:59:14,300 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:14,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-20 12:59:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903816606] [2023-12-20 12:59:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903816606] [2023-12-20 12:59:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903816606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:14,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:14,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314012056] [2023-12-20 12:59:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:14,376 INFO L87 Difference]: Start difference. First operand 4017 states and 6337 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:59:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:14,481 INFO L93 Difference]: Finished difference Result 5253 states and 8077 transitions. [2023-12-20 12:59:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 12:59:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:14,486 INFO L225 Difference]: With dead ends: 5253 [2023-12-20 12:59:14,486 INFO L226 Difference]: Without dead ends: 2787 [2023-12-20 12:59:14,488 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 12:59:14,488 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 12:59:14,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2023-12-20 12:59:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2023-12-20 12:59:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.6446280991735538) internal successors, (4577), 2784 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states 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 12:59:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4577 transitions. [2023-12-20 12:59:14,539 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4577 transitions. Word has length 66 [2023-12-20 12:59:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:14,539 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4577 transitions. [2023-12-20 12:59:14,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:59:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4577 transitions. [2023-12-20 12:59:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 12:59:14,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:14,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:14,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 12:59:14,541 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:14,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:14,542 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-20 12:59:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:14,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497896741] [2023-12-20 12:59:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:14,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497896741] [2023-12-20 12:59:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497896741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:59:14,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:59:14,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:59:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175091176] [2023-12-20 12:59:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:59:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:59:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:59:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:59:14,631 INFO L87 Difference]: Start difference. First operand 2785 states and 4577 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 12:59:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:14,666 INFO L93 Difference]: Finished difference Result 3405 states and 5437 transitions. [2023-12-20 12:59:14,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:59:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-20 12:59:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:14,669 INFO L225 Difference]: With dead ends: 3405 [2023-12-20 12:59:14,670 INFO L226 Difference]: Without dead ends: 2171 [2023-12-20 12:59:14,671 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 12:59:14,671 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 12:59:14,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:59:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-12-20 12:59:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2023-12-20 12:59:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.711121365943701) internal successors, (3708), 2168 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states 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 12:59:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3708 transitions. [2023-12-20 12:59:14,708 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3708 transitions. Word has length 68 [2023-12-20 12:59:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:14,708 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3708 transitions. [2023-12-20 12:59:14,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 12:59:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3708 transitions. [2023-12-20 12:59:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 12:59:14,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:14,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:14,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 12:59:14,710 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:14,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-20 12:59:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:14,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849668562] [2023-12-20 12:59:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849668562] [2023-12-20 12:59:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849668562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864317024] [2023-12-20 12:59:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:16,237 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 12:59:16,240 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 12:59:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:16,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:59:16,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:59:16,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:59:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864317024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:16,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:59:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303415126] [2023-12-20 12:59:16,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:59:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:59:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:59:16,712 INFO L87 Difference]: Start difference. First operand 2169 states and 3708 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 12:59:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:19,191 INFO L93 Difference]: Finished difference Result 6324 states and 9259 transitions. [2023-12-20 12:59:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 12:59:19,191 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 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 70 [2023-12-20 12:59:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:19,204 INFO L225 Difference]: With dead ends: 6324 [2023-12-20 12:59:19,204 INFO L226 Difference]: Without dead ends: 5706 [2023-12-20 12:59:19,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:59:19,208 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 11483 mSDsluCounter, 6320 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11483 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:19,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11483 Valid, 7826 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 12:59:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2023-12-20 12:59:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5518. [2023-12-20 12:59:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5516 states have (on average 1.4407179115300943) internal successors, (7947), 5517 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states 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 12:59:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 7947 transitions. [2023-12-20 12:59:19,356 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 7947 transitions. Word has length 70 [2023-12-20 12:59:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:19,357 INFO L495 AbstractCegarLoop]: Abstraction has 5518 states and 7947 transitions. [2023-12-20 12:59:19,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 12:59:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 7947 transitions. [2023-12-20 12:59:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 12:59:19,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:19,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:19,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 12:59:19,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:19,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:19,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-20 12:59:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721521953] [2023-12-20 12:59:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:21,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721521953] [2023-12-20 12:59:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721521953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294818700] [2023-12-20 12:59:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:21,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:21,427 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 12:59:21,428 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 12:59:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:21,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 12:59:21,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:21,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294818700] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:22,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 12:59:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092023436] [2023-12-20 12:59:22,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:59:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:59:22,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:59:22,790 INFO L87 Difference]: Start difference. First operand 5518 states and 7947 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 12:59:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:24,490 INFO L93 Difference]: Finished difference Result 16816 states and 22379 transitions. [2023-12-20 12:59:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 12:59:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 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 71 [2023-12-20 12:59:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:24,512 INFO L225 Difference]: With dead ends: 16816 [2023-12-20 12:59:24,512 INFO L226 Difference]: Without dead ends: 13334 [2023-12-20 12:59:24,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 12:59:24,521 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 21627 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21627 SdHoareTripleChecker+Valid, 8168 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:24,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21627 Valid, 8168 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:59:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13334 states. [2023-12-20 12:59:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13334 to 11996. [2023-12-20 12:59:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11996 states, 11994 states have (on average 1.3510088377522094) internal successors, (16204), 11995 states have internal predecessors, (16204), 0 states have call successors, (0), 0 states 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 12:59:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11996 states to 11996 states and 16204 transitions. [2023-12-20 12:59:24,883 INFO L78 Accepts]: Start accepts. Automaton has 11996 states and 16204 transitions. Word has length 71 [2023-12-20 12:59:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:24,883 INFO L495 AbstractCegarLoop]: Abstraction has 11996 states and 16204 transitions. [2023-12-20 12:59:24,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 12:59:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11996 states and 16204 transitions. [2023-12-20 12:59:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 12:59:24,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:24,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:24,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:59:25,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-20 12:59:25,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:25,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-20 12:59:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:25,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615752735] [2023-12-20 12:59:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:25,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615752735] [2023-12-20 12:59:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615752735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809583040] [2023-12-20 12:59:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:25,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:25,400 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 12:59:25,424 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 12:59:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:25,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 12:59:25,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:25,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:26,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809583040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:26,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-20 12:59:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860481075] [2023-12-20 12:59:26,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 12:59:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 12:59:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-20 12:59:26,484 INFO L87 Difference]: Start difference. First operand 11996 states and 16204 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 12:59:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:28,008 INFO L93 Difference]: Finished difference Result 23226 states and 30467 transitions. [2023-12-20 12:59:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 12:59:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 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 71 [2023-12-20 12:59:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:28,029 INFO L225 Difference]: With dead ends: 23226 [2023-12-20 12:59:28,029 INFO L226 Difference]: Without dead ends: 13256 [2023-12-20 12:59:28,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 12:59:28,040 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 18646 mSDsluCounter, 6465 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18646 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:28,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18646 Valid, 7983 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:59:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13256 states. [2023-12-20 12:59:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13256 to 11740. [2023-12-20 12:59:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11740 states, 11738 states have (on average 1.331146703015846) internal successors, (15625), 11739 states have internal predecessors, (15625), 0 states have call successors, (0), 0 states 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 12:59:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 15625 transitions. [2023-12-20 12:59:28,401 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 15625 transitions. Word has length 71 [2023-12-20 12:59:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 11740 states and 15625 transitions. [2023-12-20 12:59:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 12:59:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 15625 transitions. [2023-12-20 12:59:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 12:59:28,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:28,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:28,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:59:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:28,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:28,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1053335691, now seen corresponding path program 1 times [2023-12-20 12:59:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878864064] [2023-12-20 12:59:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878864064] [2023-12-20 12:59:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878864064] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218525386] [2023-12-20 12:59:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:28,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:28,946 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 12:59:28,964 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 12:59:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:29,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:59:29,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:29,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218525386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:30,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:59:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746190450] [2023-12-20 12:59:30,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:59:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:59:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:59:30,332 INFO L87 Difference]: Start difference. First operand 11740 states and 15625 transitions. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 12:59:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:31,309 INFO L93 Difference]: Finished difference Result 32496 states and 41528 transitions. [2023-12-20 12:59:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:59:31,309 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 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 72 [2023-12-20 12:59:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:31,331 INFO L225 Difference]: With dead ends: 32496 [2023-12-20 12:59:31,331 INFO L226 Difference]: Without dead ends: 23614 [2023-12-20 12:59:31,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:59:31,340 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 12360 mSDsluCounter, 7814 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12360 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:31,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12360 Valid, 9325 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:59:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23614 states. [2023-12-20 12:59:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23614 to 22008. [2023-12-20 12:59:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22008 states, 22006 states have (on average 1.2802417522493865) internal successors, (28173), 22007 states have internal predecessors, (28173), 0 states have call successors, (0), 0 states 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 12:59:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22008 states to 22008 states and 28173 transitions. [2023-12-20 12:59:31,905 INFO L78 Accepts]: Start accepts. Automaton has 22008 states and 28173 transitions. Word has length 72 [2023-12-20 12:59:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:31,905 INFO L495 AbstractCegarLoop]: Abstraction has 22008 states and 28173 transitions. [2023-12-20 12:59:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 12:59:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 22008 states and 28173 transitions. [2023-12-20 12:59:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 12:59:31,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:31,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:31,915 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 12:59:32,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:32,113 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:32,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-20 12:59:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:32,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675764342] [2023-12-20 12:59:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675764342] [2023-12-20 12:59:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675764342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636926891] [2023-12-20 12:59:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:32,872 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 12:59:32,880 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 12:59:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:32,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 12:59:32,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:34,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:36,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636926891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:36,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:36,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-20 12:59:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689695346] [2023-12-20 12:59:36,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:36,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 12:59:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 12:59:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:59:36,422 INFO L87 Difference]: Start difference. First operand 22008 states and 28173 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 12:59:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:53,168 INFO L93 Difference]: Finished difference Result 42431 states and 53440 transitions. [2023-12-20 12:59:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-20 12:59:53,169 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 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 73 [2023-12-20 12:59:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:53,195 INFO L225 Difference]: With dead ends: 42431 [2023-12-20 12:59:53,195 INFO L226 Difference]: Without dead ends: 31813 [2023-12-20 12:59:53,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11300 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=6000, Invalid=23070, Unknown=0, NotChecked=0, Total=29070 [2023-12-20 12:59:53,207 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 11982 mSDsluCounter, 25173 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11982 SdHoareTripleChecker+Valid, 26713 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:53,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11982 Valid, 26713 Invalid, 2561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 12:59:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31813 states. [2023-12-20 12:59:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31813 to 24098. [2023-12-20 12:59:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24098 states, 24096 states have (on average 1.2775149402390438) internal successors, (30783), 24097 states have internal predecessors, (30783), 0 states have call successors, (0), 0 states 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 12:59:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24098 states to 24098 states and 30783 transitions. [2023-12-20 12:59:54,249 INFO L78 Accepts]: Start accepts. Automaton has 24098 states and 30783 transitions. Word has length 73 [2023-12-20 12:59:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:54,249 INFO L495 AbstractCegarLoop]: Abstraction has 24098 states and 30783 transitions. [2023-12-20 12:59:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 12:59:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 24098 states and 30783 transitions. [2023-12-20 12:59:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 12:59:54,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:54,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:54,259 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 12:59:54,456 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,SelfDestructingSolverStorable23 [2023-12-20 12:59:54,457 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:59:54,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:59:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1960468014, now seen corresponding path program 1 times [2023-12-20 12:59:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:59:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183750634] [2023-12-20 12:59:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:59:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:59:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183750634] [2023-12-20 12:59:54,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183750634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:59:54,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473735352] [2023-12-20 12:59:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:59:54,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:59:54,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:59:54,931 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 12:59:54,934 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 12:59:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:59:55,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 12:59:55,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:59:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:55,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:59:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:59:56,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473735352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:59:56,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:59:56,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-20 12:59:56,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530225511] [2023-12-20 12:59:56,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:59:56,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 12:59:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:59:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 12:59:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 12:59:56,691 INFO L87 Difference]: Start difference. First operand 24098 states and 30783 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:59:59,299 INFO L93 Difference]: Finished difference Result 31731 states and 40182 transitions. [2023-12-20 12:59:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 12:59:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 12:59:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:59:59,313 INFO L225 Difference]: With dead ends: 31731 [2023-12-20 12:59:59,313 INFO L226 Difference]: Without dead ends: 15096 [2023-12-20 12:59:59,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 12:59:59,322 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 9786 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9786 SdHoareTripleChecker+Valid, 17987 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:59:59,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9786 Valid, 17987 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:59:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15096 states. [2023-12-20 12:59:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15096 to 14344. [2023-12-20 12:59:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14344 states, 14342 states have (on average 1.3098591549295775) internal successors, (18786), 14343 states have internal predecessors, (18786), 0 states have call successors, (0), 0 states 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 12:59:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14344 states to 14344 states and 18786 transitions. [2023-12-20 12:59:59,808 INFO L78 Accepts]: Start accepts. Automaton has 14344 states and 18786 transitions. Word has length 73 [2023-12-20 12:59:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:59:59,808 INFO L495 AbstractCegarLoop]: Abstraction has 14344 states and 18786 transitions. [2023-12-20 12:59:59,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:59:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 14344 states and 18786 transitions. [2023-12-20 12:59:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 12:59:59,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:59:59,811 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:59:59,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:00:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:00,017 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:00:00,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:00:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1066359965, now seen corresponding path program 1 times [2023-12-20 13:00:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:00:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37756137] [2023-12-20 13:00:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:00:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:00,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:00:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37756137] [2023-12-20 13:00:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37756137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:00:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869363072] [2023-12-20 13:00:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:00,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:00,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:00,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:00:00,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:00:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:00,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:00:00,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:00:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:01,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:00:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 44 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:03,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869363072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:00:03,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:00:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 13:00:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822469107] [2023-12-20 13:00:03,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:00:03,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:00:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:00:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:00:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:00:03,223 INFO L87 Difference]: Start difference. First operand 14344 states and 18786 transitions. Second operand has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 13:00:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:00:07,227 INFO L93 Difference]: Finished difference Result 42001 states and 53258 transitions. [2023-12-20 13:00:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-20 13:00:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 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 117 [2023-12-20 13:00:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:00:07,255 INFO L225 Difference]: With dead ends: 42001 [2023-12-20 13:00:07,256 INFO L226 Difference]: Without dead ends: 30651 [2023-12-20 13:00:07,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1362, Invalid=5778, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 13:00:07,263 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 21565 mSDsluCounter, 16899 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21565 SdHoareTripleChecker+Valid, 18409 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:00:07,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21565 Valid, 18409 Invalid, 1272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:00:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2023-12-20 13:00:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 25557. [2023-12-20 13:00:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25557 states, 25555 states have (on average 1.2554490315006848) internal successors, (32083), 25556 states have internal predecessors, (32083), 0 states have call successors, (0), 0 states 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 13:00:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25557 states to 25557 states and 32083 transitions. [2023-12-20 13:00:08,372 INFO L78 Accepts]: Start accepts. Automaton has 25557 states and 32083 transitions. Word has length 117 [2023-12-20 13:00:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:00:08,372 INFO L495 AbstractCegarLoop]: Abstraction has 25557 states and 32083 transitions. [2023-12-20 13:00:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 13:00:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 25557 states and 32083 transitions. [2023-12-20 13:00:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 13:00:08,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:00:08,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:00:08,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:00:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:08,577 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:00:08,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:00:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1802629909, now seen corresponding path program 1 times [2023-12-20 13:00:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:00:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580846257] [2023-12-20 13:00:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:00:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:00:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580846257] [2023-12-20 13:00:09,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580846257] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:00:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319223812] [2023-12-20 13:00:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:09,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:09,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:00:09,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:00:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:09,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:00:09,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:00:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:10,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:00:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319223812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:00:11,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:00:11,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:00:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514480249] [2023-12-20 13:00:11,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:00:11,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:00:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:00:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:00:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:00:11,959 INFO L87 Difference]: Start difference. First operand 25557 states and 32083 transitions. Second operand has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 13:00:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:00:13,515 INFO L93 Difference]: Finished difference Result 33982 states and 42447 transitions. [2023-12-20 13:00:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 13:00:13,515 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 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 117 [2023-12-20 13:00:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:00:13,541 INFO L225 Difference]: With dead ends: 33982 [2023-12-20 13:00:13,541 INFO L226 Difference]: Without dead ends: 25991 [2023-12-20 13:00:13,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=1386, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:00:13,551 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 12046 mSDsluCounter, 10822 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12046 SdHoareTripleChecker+Valid, 12342 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:00:13,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12046 Valid, 12342 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:00:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25991 states. [2023-12-20 13:00:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25991 to 20775. [2023-12-20 13:00:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20775 states, 20773 states have (on average 1.2589418957300342) internal successors, (26152), 20774 states have internal predecessors, (26152), 0 states have call successors, (0), 0 states 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 13:00:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20775 states to 20775 states and 26152 transitions. [2023-12-20 13:00:14,478 INFO L78 Accepts]: Start accepts. Automaton has 20775 states and 26152 transitions. Word has length 117 [2023-12-20 13:00:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:00:14,478 INFO L495 AbstractCegarLoop]: Abstraction has 20775 states and 26152 transitions. [2023-12-20 13:00:14,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 13:00:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 20775 states and 26152 transitions. [2023-12-20 13:00:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 13:00:14,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:00:14,482 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:00:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 13:00:14,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:00:14,690 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:00:14,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:00:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2021574936, now seen corresponding path program 1 times [2023-12-20 13:00:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:00:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171693479] [2023-12-20 13:00:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:14,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:00:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:00:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171693479] [2023-12-20 13:00:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171693479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:00:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465133930] [2023-12-20 13:00:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:15,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:15,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:00:15,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:00:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:15,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:00:15,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:00:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:16,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:00:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465133930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:00:17,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:00:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2023-12-20 13:00:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478024286] [2023-12-20 13:00:17,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:00:17,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:00:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:00:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:00:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:00:17,654 INFO L87 Difference]: Start difference. First operand 20775 states and 26152 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 13:00:19,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:00:19,630 INFO L93 Difference]: Finished difference Result 31189 states and 38963 transitions. [2023-12-20 13:00:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 13:00:19,631 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 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 118 [2023-12-20 13:00:19,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:00:19,649 INFO L225 Difference]: With dead ends: 31189 [2023-12-20 13:00:19,649 INFO L226 Difference]: Without dead ends: 21387 [2023-12-20 13:00:19,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 13:00:19,657 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 18188 mSDsluCounter, 12106 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18188 SdHoareTripleChecker+Valid, 13615 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:00:19,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18188 Valid, 13615 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 13:00:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21387 states. [2023-12-20 13:00:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21387 to 20775. [2023-12-20 13:00:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20775 states, 20773 states have (on average 1.2487844798536563) internal successors, (25941), 20774 states have internal predecessors, (25941), 0 states have call successors, (0), 0 states 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 13:00:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20775 states to 20775 states and 25941 transitions. [2023-12-20 13:00:20,685 INFO L78 Accepts]: Start accepts. Automaton has 20775 states and 25941 transitions. Word has length 118 [2023-12-20 13:00:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:00:20,685 INFO L495 AbstractCegarLoop]: Abstraction has 20775 states and 25941 transitions. [2023-12-20 13:00:20,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 13:00:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 20775 states and 25941 transitions. [2023-12-20 13:00:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 13:00:20,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:00:20,690 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:20,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 13:00:20,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:00:20,896 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:00:20,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:00:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2083309595, now seen corresponding path program 1 times [2023-12-20 13:00:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:00:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303781917] [2023-12-20 13:00:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:00:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:00:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303781917] [2023-12-20 13:00:22,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303781917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:00:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097941347] [2023-12-20 13:00:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:22,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:22,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:00:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:00:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:22,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 13:00:22,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:00:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:25,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:00:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:30,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097941347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:00:30,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:00:30,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2023-12-20 13:00:30,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048083002] [2023-12-20 13:00:30,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:00:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-20 13:00:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:00:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-20 13:00:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=4772, Unknown=0, NotChecked=0, Total=5112 [2023-12-20 13:00:30,005 INFO L87 Difference]: Start difference. First operand 20775 states and 25941 transitions. Second operand has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 13:02:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:32,584 INFO L93 Difference]: Finished difference Result 47204 states and 57386 transitions. [2023-12-20 13:02:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-12-20 13:02:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-20 13:02:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:32,625 INFO L225 Difference]: With dead ends: 47204 [2023-12-20 13:02:32,625 INFO L226 Difference]: Without dead ends: 43955 [2023-12-20 13:02:32,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77420 ImplicationChecksByTransitivity, 111.9s TimeCoverageRelationStatistics Valid=19199, Invalid=183751, Unknown=0, NotChecked=0, Total=202950 [2023-12-20 13:02:32,648 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 33584 mSDsluCounter, 45817 mSDsCounter, 0 mSdLazyCounter, 10707 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33584 SdHoareTripleChecker+Valid, 47505 SdHoareTripleChecker+Invalid, 11199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 10707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:32,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33584 Valid, 47505 Invalid, 11199 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [492 Valid, 10707 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-20 13:02:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43955 states. [2023-12-20 13:02:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43955 to 28455. [2023-12-20 13:02:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28455 states, 28453 states have (on average 1.231891188978315) internal successors, (35051), 28454 states have internal predecessors, (35051), 0 states have call successors, (0), 0 states 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 13:02:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28455 states to 28455 states and 35051 transitions. [2023-12-20 13:02:34,845 INFO L78 Accepts]: Start accepts. Automaton has 28455 states and 35051 transitions. Word has length 119 [2023-12-20 13:02:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:34,845 INFO L495 AbstractCegarLoop]: Abstraction has 28455 states and 35051 transitions. [2023-12-20 13:02:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 13:02:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 28455 states and 35051 transitions. [2023-12-20 13:02:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 13:02:34,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:34,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:34,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:02:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 13:02:35,056 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:35,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -970063708, now seen corresponding path program 1 times [2023-12-20 13:02:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914457873] [2023-12-20 13:02:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:35,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:35,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914457873] [2023-12-20 13:02:35,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914457873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:35,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620169366] [2023-12-20 13:02:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:35,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:35,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:35,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:35,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:02:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:36,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 13:02:36,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 39 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620169366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:46,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 21] total 54 [2023-12-20 13:02:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984752758] [2023-12-20 13:02:46,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 13:02:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 13:02:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 13:02:46,874 INFO L87 Difference]: Start difference. First operand 28455 states and 35051 transitions. Second operand has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 13:03:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:27,986 INFO L93 Difference]: Finished difference Result 73280 states and 88983 transitions. [2023-12-20 13:03:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-20 13:03:27,986 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-20 13:03:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:28,029 INFO L225 Difference]: With dead ends: 73280 [2023-12-20 13:03:28,029 INFO L226 Difference]: Without dead ends: 48931 [2023-12-20 13:03:28,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21563 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=8718, Invalid=55544, Unknown=0, NotChecked=0, Total=64262 [2023-12-20 13:03:28,043 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 31170 mSDsluCounter, 40909 mSDsCounter, 0 mSdLazyCounter, 5083 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31170 SdHoareTripleChecker+Valid, 42554 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 5083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:28,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31170 Valid, 42554 Invalid, 5592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [509 Valid, 5083 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 13:03:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48931 states. [2023-12-20 13:03:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48931 to 38312. [2023-12-20 13:03:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38312 states, 38310 states have (on average 1.2241451318193683) internal successors, (46897), 38311 states have internal predecessors, (46897), 0 states have call successors, (0), 0 states 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 13:03:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38312 states to 38312 states and 46897 transitions. [2023-12-20 13:03:31,305 INFO L78 Accepts]: Start accepts. Automaton has 38312 states and 46897 transitions. Word has length 120 [2023-12-20 13:03:31,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:31,305 INFO L495 AbstractCegarLoop]: Abstraction has 38312 states and 46897 transitions. [2023-12-20 13:03:31,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 13:03:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 38312 states and 46897 transitions. [2023-12-20 13:03:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 13:03:31,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:31,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:31,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:03:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:31,515 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:31,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash 215697854, now seen corresponding path program 1 times [2023-12-20 13:03:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315705337] [2023-12-20 13:03:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:32,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315705337] [2023-12-20 13:03:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315705337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288250755] [2023-12-20 13:03:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:32,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:32,795 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:32,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:03:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:32,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 13:03:32,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:36,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288250755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:42,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 30] total 77 [2023-12-20 13:03:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873230777] [2023-12-20 13:03:42,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-20 13:03:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-20 13:03:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=5409, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 13:03:42,235 INFO L87 Difference]: Start difference. First operand 38312 states and 46897 transitions. Second operand has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 13:06:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:06:11,612 INFO L93 Difference]: Finished difference Result 70387 states and 84334 transitions. [2023-12-20 13:06:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 346 states. [2023-12-20 13:06:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-20 13:06:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:06:11,671 INFO L225 Difference]: With dead ends: 70387 [2023-12-20 13:06:11,671 INFO L226 Difference]: Without dead ends: 66934 [2023-12-20 13:06:11,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64378 ImplicationChecksByTransitivity, 137.7s TimeCoverageRelationStatistics Valid=16172, Invalid=153984, Unknown=0, NotChecked=0, Total=170156 [2023-12-20 13:06:11,684 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 30064 mSDsluCounter, 44058 mSDsCounter, 0 mSdLazyCounter, 7535 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30064 SdHoareTripleChecker+Valid, 45620 SdHoareTripleChecker+Invalid, 7889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 7535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:06:11,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30064 Valid, 45620 Invalid, 7889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [354 Valid, 7535 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 13:06:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66934 states. [2023-12-20 13:06:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66934 to 41063. [2023-12-20 13:06:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41063 states, 41061 states have (on average 1.2206716835927036) internal successors, (50122), 41062 states have internal predecessors, (50122), 0 states have call successors, (0), 0 states 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 13:06:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41063 states to 41063 states and 50122 transitions. [2023-12-20 13:06:15,940 INFO L78 Accepts]: Start accepts. Automaton has 41063 states and 50122 transitions. Word has length 120 [2023-12-20 13:06:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:06:15,940 INFO L495 AbstractCegarLoop]: Abstraction has 41063 states and 50122 transitions. [2023-12-20 13:06:15,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 13:06:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 41063 states and 50122 transitions. [2023-12-20 13:06:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 13:06:15,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:06:15,943 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:06:15,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 13:06:16,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:06:16,145 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:06:16,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:06:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1063258684, now seen corresponding path program 1 times [2023-12-20 13:06:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:06:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442411092] [2023-12-20 13:06:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:06:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:16,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:06:16,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442411092] [2023-12-20 13:06:16,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442411092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:06:16,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705327017] [2023-12-20 13:06:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:16,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:06:16,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:06:16,823 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:06:16,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:06:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:16,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:06:16,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:06:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:17,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:06:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:19,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705327017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:06:19,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:06:19,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-12-20 13:06:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255731713] [2023-12-20 13:06:19,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:06:19,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 13:06:19,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:06:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 13:06:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 13:06:19,338 INFO L87 Difference]: Start difference. First operand 41063 states and 50122 transitions. Second operand has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 13:06:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:06:37,345 INFO L93 Difference]: Finished difference Result 125696 states and 151005 transitions. [2023-12-20 13:06:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-20 13:06:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-20 13:06:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:06:37,428 INFO L225 Difference]: With dead ends: 125696 [2023-12-20 13:06:37,428 INFO L226 Difference]: Without dead ends: 92034 [2023-12-20 13:06:37,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9955 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4209, Invalid=25893, Unknown=0, NotChecked=0, Total=30102 [2023-12-20 13:06:37,442 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 20963 mSDsluCounter, 19419 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20963 SdHoareTripleChecker+Valid, 20995 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:06:37,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20963 Valid, 20995 Invalid, 2288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 13:06:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92034 states. [2023-12-20 13:06:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92034 to 39633. [2023-12-20 13:06:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39633 states, 39631 states have (on average 1.206050818803462) internal successors, (47797), 39632 states have internal predecessors, (47797), 0 states have call successors, (0), 0 states 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 13:06:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39633 states to 39633 states and 47797 transitions. [2023-12-20 13:06:41,977 INFO L78 Accepts]: Start accepts. Automaton has 39633 states and 47797 transitions. Word has length 120 [2023-12-20 13:06:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:06:41,977 INFO L495 AbstractCegarLoop]: Abstraction has 39633 states and 47797 transitions. [2023-12-20 13:06:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 13:06:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 39633 states and 47797 transitions. [2023-12-20 13:06:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 13:06:41,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:06:41,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:06:41,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 13:06:42,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 13:06:42,181 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:06:42,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:06:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1949816879, now seen corresponding path program 1 times [2023-12-20 13:06:42,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:06:42,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189978719] [2023-12-20 13:06:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:42,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:06:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:43,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:06:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189978719] [2023-12-20 13:06:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189978719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:06:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582329499] [2023-12-20 13:06:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:43,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:06:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:06:43,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:06:43,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 13:06:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:43,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-20 13:06:43,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:06:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:50,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:07:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:07:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582329499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:07:00,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:07:00,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 36, 37] total 98 [2023-12-20 13:07:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475997018] [2023-12-20 13:07:00,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:07:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-20 13:07:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:07:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-20 13:07:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=8619, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 13:07:00,186 INFO L87 Difference]: Start difference. First operand 39633 states and 47797 transitions. Second operand has 98 states, 98 states have (on average 3.489795918367347) internal successors, (342), 98 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 13:12:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-12-20 13:12:20,970 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:12:20,971 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:12:20,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115983 ImplicationChecksByTransitivity, 315.4s TimeCoverageRelationStatistics Valid=27315, Invalid=253055, Unknown=0, NotChecked=0, Total=280370 [2023-12-20 13:12:20,984 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 13063 mSDsluCounter, 9992 mSDsCounter, 0 mSdLazyCounter, 6592 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13063 SdHoareTripleChecker+Valid, 10322 SdHoareTripleChecker+Invalid, 7148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 6592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:12:20,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13063 Valid, 10322 Invalid, 7148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 6592 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-20 13:12:20,986 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:12:20,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 13:12:21,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:12:21,195 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (39633states) and FLOYD_HOARE automaton (currently 446 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 8 xjuncts wrt. a ∧-14-8-4-3-2-3-1 context. [2023-12-20 13:12:21,197 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:12:21,200 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:12:21,202 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:12:21,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:12:21 BoogieIcfgContainer [2023-12-20 13:12:21,204 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:12:21,204 INFO L158 Benchmark]: Toolchain (without parser) took 802232.10ms. Allocated memory was 269.5MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 203.6MB in the beginning and 1.0GB in the end (delta: -813.7MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-20 13:12:21,206 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:12:21,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1599.19ms. Allocated memory is still 269.5MB. Free memory was 203.6MB in the beginning and 207.5MB in the end (delta: -3.9MB). Peak memory consumption was 138.8MB. Max. memory is 8.0GB. [2023-12-20 13:12:21,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 336.77ms. Allocated memory is still 269.5MB. Free memory was 207.5MB in the beginning and 144.0MB in the end (delta: 63.5MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. [2023-12-20 13:12:21,209 INFO L158 Benchmark]: Boogie Preprocessor took 546.80ms. Allocated memory was 269.5MB in the beginning and 407.9MB in the end (delta: 138.4MB). Free memory was 144.0MB in the beginning and 274.5MB in the end (delta: -130.5MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-12-20 13:12:21,212 INFO L158 Benchmark]: RCFGBuilder took 3879.07ms. Allocated memory was 407.9MB in the beginning and 747.6MB in the end (delta: 339.7MB). Free memory was 274.5MB in the beginning and 479.0MB in the end (delta: -204.5MB). Peak memory consumption was 170.1MB. Max. memory is 8.0GB. [2023-12-20 13:12:21,212 INFO L158 Benchmark]: TraceAbstraction took 795863.04ms. Allocated memory was 747.6MB in the beginning and 3.3GB in the end (delta: 2.6GB). Free memory was 478.5MB in the beginning and 1.0GB in the end (delta: -538.8MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-20 13:12:21,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1599.19ms. Allocated memory is still 269.5MB. Free memory was 203.6MB in the beginning and 207.5MB in the end (delta: -3.9MB). Peak memory consumption was 138.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 336.77ms. Allocated memory is still 269.5MB. Free memory was 207.5MB in the beginning and 144.0MB in the end (delta: 63.5MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 546.80ms. Allocated memory was 269.5MB in the beginning and 407.9MB in the end (delta: 138.4MB). Free memory was 144.0MB in the beginning and 274.5MB in the end (delta: -130.5MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3879.07ms. Allocated memory was 407.9MB in the beginning and 747.6MB in the end (delta: 339.7MB). Free memory was 274.5MB in the beginning and 479.0MB in the end (delta: -204.5MB). Peak memory consumption was 170.1MB. Max. memory is 8.0GB. * TraceAbstraction took 795863.04ms. Allocated memory was 747.6MB in the beginning and 3.3GB in the end (delta: 2.6GB). Free memory was 478.5MB in the beginning and 1.0GB in the end (delta: -538.8MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 366]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 366). Cancelled while NwaCegarLoop was constructing difference of abstraction (39633states) and FLOYD_HOARE automaton (currently 446 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 8 xjuncts wrt. a ∧-14-8-4-3-2-3-1 context. - TimeoutResultAtElement [Line: 564]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 564). Cancelled while NwaCegarLoop was constructing difference of abstraction (39633states) and FLOYD_HOARE automaton (currently 446 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 8 xjuncts wrt. a ∧-14-8-4-3-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 795.8s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 691.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302817 SdHoareTripleChecker+Valid, 42.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302817 mSDsluCounter, 337536 SdHoareTripleChecker+Invalid, 37.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 289121 mSDsCounter, 3433 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43788 IncrementalHoareTripleChecker+Invalid, 47221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3433 mSolverCounterUnsat, 48415 mSDtfsCounter, 43788 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4913 GetRequests, 2421 SyntacticMatches, 4 SemanticMatches, 2487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306584 ImplicationChecksByTransitivity, 636.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41063occurred in iteration=31, InterpolantAutomatonStates: 1544, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.7s AutomataMinimizationTime, 32 MinimizatonAttempts, 137588 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 76.7s InterpolantComputationTime, 3722 NumberOfCodeBlocks, 3722 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5043 ConstructedInterpolants, 0 QuantifiedInterpolants, 115568 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6216 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 61 InterpolantComputations, 19 PerfectInterpolantSequences, 857/2714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown