/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.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:50:06,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:50:06,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:50:06,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:50:06,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:50:06,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:50:06,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:50:06,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:50:06,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:50:06,636 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:50:06,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:50:06,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:50:06,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:50:06,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:50:06,638 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:50:06,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:50:06,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:50:06,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:50:06,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:50:06,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:50:06,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:50:06,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:50:06,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:50:06,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:50:06,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:50:06,641 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:50:06,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:50:06,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:50:06,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:50:06,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:50:06,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:50:06,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:50:06,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:50:06,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:50:06,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:50:06,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:50:06,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:50:06,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:50:06,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:50:06,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:50:06,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:50:06,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:50:06,893 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:50:06,893 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:50:06,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c [2023-12-16 00:50:08,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:50:08,495 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:50:08,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c [2023-12-16 00:50:08,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3548cc059/7663d68995994f32a4c29a3dfeefc018/FLAG33faf1905 [2023-12-16 00:50:08,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3548cc059/7663d68995994f32a4c29a3dfeefc018 [2023-12-16 00:50:08,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:50:08,545 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:50:08,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:50:08,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:50:08,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:50:08,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:50:08" (1/1) ... [2023-12-16 00:50:08,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cc830d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:08, skipping insertion in model container [2023-12-16 00:50:08,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:50:08" (1/1) ... [2023-12-16 00:50:08,676 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:50:09,002 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.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c[6391,6404] [2023-12-16 00:50:09,096 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.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c[13681,13694] [2023-12-16 00:50:09,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:50:09,679 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:50:09,716 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.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c[6391,6404] [2023-12-16 00:50:09,726 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.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c[13681,13694] [2023-12-16 00:50:10,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:50:10,170 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:50:10,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10 WrapperNode [2023-12-16 00:50:10,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:50:10,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:50:10,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:50:10,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:50:10,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,496 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2023-12-16 00:50:10,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:50:10,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:50:10,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:50:10,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:50:10,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,768 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]. [2023-12-16 00:50:10,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:10,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:11,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:50:11,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:50:11,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:50:11,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:50:11,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (1/1) ... [2023-12-16 00:50:11,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:50:11,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:11,033 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) [2023-12-16 00:50:11,057 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 [2023-12-16 00:50:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:50:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:50:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:50:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:50:11,145 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:50:11,147 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:50:14,999 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:50:15,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:50:15,050 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:50:15,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:50:15 BoogieIcfgContainer [2023-12-16 00:50:15,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:50:15,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:50:15,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:50:15,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:50:15,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:50:08" (1/3) ... [2023-12-16 00:50:15,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554dfe46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:50:15, skipping insertion in model container [2023-12-16 00:50:15,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:10" (2/3) ... [2023-12-16 00:50:15,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554dfe46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:50:15, skipping insertion in model container [2023-12-16 00:50:15,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:50:15" (3/3) ... [2023-12-16 00:50:15,058 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label02.c [2023-12-16 00:50:15,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:50:15,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:50:15,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:50:15,140 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;@6199ff39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:50:15,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:50:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 00:50:15,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:15,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:15,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:15,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1100216757, now seen corresponding path program 1 times [2023-12-16 00:50:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212612016] [2023-12-16 00:50:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212612016] [2023-12-16 00:50:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212612016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:50:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443064305] [2023-12-16 00:50:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:50:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:50:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:50:15,353 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:15,448 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-16 00:50:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:50:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-16 00:50:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:15,475 INFO L225 Difference]: With dead ends: 1594 [2023-12-16 00:50:15,475 INFO L226 Difference]: Without dead ends: 803 [2023-12-16 00:50:15,483 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 [2023-12-16 00:50:15,486 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:15,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-16 00:50:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-16 00:50:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-16 00:50:15,558 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-16 00:50:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:15,558 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-16 00:50:15,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-16 00:50:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 00:50:15,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:15,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:50:15,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1687022771, now seen corresponding path program 1 times [2023-12-16 00:50:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:15,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486186020] [2023-12-16 00:50:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486186020] [2023-12-16 00:50:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486186020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:15,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:50:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857863417] [2023-12-16 00:50:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:15,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:50:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:50:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:50:15,689 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:15,769 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-16 00:50:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:50:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-16 00:50:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:15,775 INFO L225 Difference]: With dead ends: 864 [2023-12-16 00:50:15,775 INFO L226 Difference]: Without dead ends: 832 [2023-12-16 00:50:15,775 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 [2023-12-16 00:50:15,777 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-16 00:50:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-16 00:50:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-16 00:50:15,816 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-16 00:50:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:15,816 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-16 00:50:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-16 00:50:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 00:50:15,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:15,819 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] [2023-12-16 00:50:15,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:50:15,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:15,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash 613121839, now seen corresponding path program 1 times [2023-12-16 00:50:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340096965] [2023-12-16 00:50:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:15,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:15,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340096965] [2023-12-16 00:50:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340096965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:15,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:15,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435873639] [2023-12-16 00:50:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:15,942 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:16,063 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-16 00:50:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:50:16,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-16 00:50:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:16,068 INFO L225 Difference]: With dead ends: 977 [2023-12-16 00:50:16,068 INFO L226 Difference]: Without dead ends: 948 [2023-12-16 00:50:16,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:50:16,070 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:16,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:50:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-16 00:50:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-16 00:50:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 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) [2023-12-16 00:50:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-16 00:50:16,096 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-16 00:50:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:16,096 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-16 00:50:16,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-16 00:50:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:50:16,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:16,098 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] [2023-12-16 00:50:16,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:50:16,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:16,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:16,099 INFO L85 PathProgramCache]: Analyzing trace with hash 675954815, now seen corresponding path program 1 times [2023-12-16 00:50:16,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:16,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406770728] [2023-12-16 00:50:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:16,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:16,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:16,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406770728] [2023-12-16 00:50:16,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406770728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:16,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:16,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543325661] [2023-12-16 00:50:16,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:16,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:16,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:16,205 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:16,245 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-16 00:50:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-16 00:50:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:16,251 INFO L225 Difference]: With dead ends: 931 [2023-12-16 00:50:16,251 INFO L226 Difference]: Without dead ends: 875 [2023-12-16 00:50:16,251 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 [2023-12-16 00:50:16,258 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:16,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-16 00:50:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-16 00:50:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-16 00:50:16,280 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-16 00:50:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:16,281 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-16 00:50:16,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-16 00:50:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:50:16,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:16,289 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] [2023-12-16 00:50:16,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:50:16,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:16,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 678099767, now seen corresponding path program 1 times [2023-12-16 00:50:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023063907] [2023-12-16 00:50:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023063907] [2023-12-16 00:50:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023063907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:16,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281753944] [2023-12-16 00:50:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:16,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:16,494 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:16,589 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-16 00:50:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:16,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-16 00:50:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:16,594 INFO L225 Difference]: With dead ends: 974 [2023-12-16 00:50:16,594 INFO L226 Difference]: Without dead ends: 875 [2023-12-16 00:50:16,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:50:16,604 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:16,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-16 00:50:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-16 00:50:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-16 00:50:16,627 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-16 00:50:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:16,627 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-16 00:50:16,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-16 00:50:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 00:50:16,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:16,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:16,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:50:16,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:16,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash -582127364, now seen corresponding path program 1 times [2023-12-16 00:50:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527036335] [2023-12-16 00:50:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527036335] [2023-12-16 00:50:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527036335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:50:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339155192] [2023-12-16 00:50:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:16,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:50:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:50:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:50:16,808 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:16,863 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-16 00:50:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:50:16,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-16 00:50:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:16,867 INFO L225 Difference]: With dead ends: 881 [2023-12-16 00:50:16,868 INFO L226 Difference]: Without dead ends: 879 [2023-12-16 00:50:16,868 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 [2023-12-16 00:50:16,868 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 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 [2023-12-16 00:50:16,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-16 00:50:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-16 00:50:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-16 00:50:16,892 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-16 00:50:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:16,893 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-16 00:50:16,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-16 00:50:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:16,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:16,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:50:16,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:16,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2127458807, now seen corresponding path program 1 times [2023-12-16 00:50:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689992532] [2023-12-16 00:50:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689992532] [2023-12-16 00:50:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689992532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:16,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:16,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864066966] [2023-12-16 00:50:16,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:16,929 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:16,956 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-16 00:50:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-16 00:50:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:16,961 INFO L225 Difference]: With dead ends: 991 [2023-12-16 00:50:16,961 INFO L226 Difference]: Without dead ends: 931 [2023-12-16 00:50:16,961 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 [2023-12-16 00:50:16,962 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 [2023-12-16 00:50:16,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-16 00:50:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-16 00:50:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-16 00:50:16,980 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-16 00:50:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:16,980 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-16 00:50:16,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-16 00:50:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:16,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:16,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:16,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:50:16,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1501802743, now seen corresponding path program 1 times [2023-12-16 00:50:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139086310] [2023-12-16 00:50:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139086310] [2023-12-16 00:50:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139086310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:17,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871887958] [2023-12-16 00:50:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:17,012 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:17,040 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-16 00:50:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:17,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-16 00:50:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:17,045 INFO L225 Difference]: With dead ends: 1211 [2023-12-16 00:50:17,045 INFO L226 Difference]: Without dead ends: 1058 [2023-12-16 00:50:17,046 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 [2023-12-16 00:50:17,046 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 [2023-12-16 00:50:17,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-16 00:50:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-16 00:50:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-16 00:50:17,067 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-16 00:50:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:17,067 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-16 00:50:17,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-16 00:50:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:17,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:17,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:50:17,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:17,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1904431113, now seen corresponding path program 1 times [2023-12-16 00:50:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511111360] [2023-12-16 00:50:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:17,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:17,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511111360] [2023-12-16 00:50:17,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511111360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:17,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:17,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:17,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592958509] [2023-12-16 00:50:17,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:17,103 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:17,138 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-16 00:50:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-16 00:50:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:17,144 INFO L225 Difference]: With dead ends: 1568 [2023-12-16 00:50:17,146 INFO L226 Difference]: Without dead ends: 1288 [2023-12-16 00:50:17,148 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 [2023-12-16 00:50:17,150 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 [2023-12-16 00:50:17,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-16 00:50:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-16 00:50:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-16 00:50:17,179 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-16 00:50:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:17,179 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-16 00:50:17,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-16 00:50:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:17,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:17,181 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] [2023-12-16 00:50:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:50:17,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:17,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1853448570, now seen corresponding path program 1 times [2023-12-16 00:50:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314979868] [2023-12-16 00:50:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314979868] [2023-12-16 00:50:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314979868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072173168] [2023-12-16 00:50:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:17,292 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:17,407 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-12-16 00:50:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 00:50:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:17,419 INFO L225 Difference]: With dead ends: 2794 [2023-12-16 00:50:17,419 INFO L226 Difference]: Without dead ends: 2424 [2023-12-16 00:50:17,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:50:17,421 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:17,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-12-16 00:50:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-12-16 00:50:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-12-16 00:50:17,471 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-12-16 00:50:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:17,471 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-12-16 00:50:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-12-16 00:50:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:17,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:17,472 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] [2023-12-16 00:50:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:50:17,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:17,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1815862662, now seen corresponding path program 1 times [2023-12-16 00:50:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:17,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321266045] [2023-12-16 00:50:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:50:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321266045] [2023-12-16 00:50:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321266045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:17,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047048682] [2023-12-16 00:50:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:17,585 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:17,693 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-12-16 00:50:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:17,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 00:50:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:17,703 INFO L225 Difference]: With dead ends: 3302 [2023-12-16 00:50:17,703 INFO L226 Difference]: Without dead ends: 2792 [2023-12-16 00:50:17,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:50:17,706 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:17,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-16 00:50:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-12-16 00:50:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-16 00:50:17,803 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-12-16 00:50:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:17,804 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-16 00:50:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-16 00:50:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:17,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:17,805 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] [2023-12-16 00:50:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:50:17,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:17,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371194, now seen corresponding path program 1 times [2023-12-16 00:50:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392263853] [2023-12-16 00:50:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:50:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392263853] [2023-12-16 00:50:17,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392263853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:17,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:17,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:17,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800456702] [2023-12-16 00:50:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:17,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:17,900 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-12-16 00:50:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:18,017 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-12-16 00:50:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:18,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 50 [2023-12-16 00:50:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:18,027 INFO L225 Difference]: With dead ends: 3810 [2023-12-16 00:50:18,028 INFO L226 Difference]: Without dead ends: 3300 [2023-12-16 00:50:18,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:50:18,029 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:18,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-16 00:50:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-12-16 00:50:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-12-16 00:50:18,111 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-12-16 00:50:18,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:18,111 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-12-16 00:50:18,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-12-16 00:50:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-12-16 00:50:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 00:50:18,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:18,113 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] [2023-12-16 00:50:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:50:18,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:18,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1183432324, now seen corresponding path program 1 times [2023-12-16 00:50:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775681923] [2023-12-16 00:50:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:18,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775681923] [2023-12-16 00:50:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775681923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136317720] [2023-12-16 00:50:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:18,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:18,179 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:18,238 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-12-16 00:50:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 00:50:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:18,248 INFO L225 Difference]: With dead ends: 5078 [2023-12-16 00:50:18,249 INFO L226 Difference]: Without dead ends: 2928 [2023-12-16 00:50:18,251 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 [2023-12-16 00:50:18,252 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 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 [2023-12-16 00:50:18,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-16 00:50:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-12-16 00:50:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-12-16 00:50:18,323 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-12-16 00:50:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:18,324 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-12-16 00:50:18,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-12-16 00:50:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 00:50:18,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:18,325 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] [2023-12-16 00:50:18,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:50:18,325 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:18,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1165828046, now seen corresponding path program 1 times [2023-12-16 00:50:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477611219] [2023-12-16 00:50:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477611219] [2023-12-16 00:50:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477611219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463104092] [2023-12-16 00:50:18,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:18,392 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:18,431 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-12-16 00:50:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:18,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 00:50:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:18,437 INFO L225 Difference]: With dead ends: 3772 [2023-12-16 00:50:18,437 INFO L226 Difference]: Without dead ends: 1622 [2023-12-16 00:50:18,439 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 [2023-12-16 00:50:18,439 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 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 [2023-12-16 00:50:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-12-16 00:50:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-12-16 00:50:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-12-16 00:50:18,476 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-12-16 00:50:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-12-16 00:50:18,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-12-16 00:50:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 00:50:18,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:18,477 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] [2023-12-16 00:50:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:50:18,477 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:18,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2138930058, now seen corresponding path program 1 times [2023-12-16 00:50:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:18,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237063732] [2023-12-16 00:50:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237063732] [2023-12-16 00:50:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237063732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:18,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:18,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671368539] [2023-12-16 00:50:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:18,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:18,546 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:18,574 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-12-16 00:50:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 00:50:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:18,595 INFO L225 Difference]: With dead ends: 2033 [2023-12-16 00:50:18,595 INFO L226 Difference]: Without dead ends: 1203 [2023-12-16 00:50:18,597 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 [2023-12-16 00:50:18,597 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 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 [2023-12-16 00:50:18,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-16 00:50:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-12-16 00:50:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-12-16 00:50:18,667 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-12-16 00:50:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:18,668 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-12-16 00:50:18,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-12-16 00:50:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:50:18,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:18,668 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] [2023-12-16 00:50:18,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:50:18,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:18,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1489407768, now seen corresponding path program 1 times [2023-12-16 00:50:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043722826] [2023-12-16 00:50:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:18,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:20,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043722826] [2023-12-16 00:50:20,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043722826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:20,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753524860] [2023-12-16 00:50:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:20,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:20,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:20,196 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) [2023-12-16 00:50:20,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:50:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 00:50:20,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:20,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753524860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:20,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 00:50:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368971234] [2023-12-16 00:50:20,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:20,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:50:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:50:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:50:20,665 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:22,474 INFO L93 Difference]: Finished difference Result 3210 states and 4685 transitions. [2023-12-16 00:50:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-16 00:50:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 00:50:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:22,480 INFO L225 Difference]: With dead ends: 3210 [2023-12-16 00:50:22,480 INFO L226 Difference]: Without dead ends: 2794 [2023-12-16 00:50:22,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 00:50:22,483 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 17132 mSDsluCounter, 6163 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17132 SdHoareTripleChecker+Valid, 7654 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:22,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17132 Valid, 7654 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:50:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-12-16 00:50:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2612. [2023-12-16 00:50:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2610 states have (on average 1.4624521072796934) internal successors, (3817), 2611 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3817 transitions. [2023-12-16 00:50:22,560 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3817 transitions. Word has length 55 [2023-12-16 00:50:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:22,560 INFO L495 AbstractCegarLoop]: Abstraction has 2612 states and 3817 transitions. [2023-12-16 00:50:22,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3817 transitions. [2023-12-16 00:50:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:22,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:22,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:22,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 00:50:22,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:22,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash -294784256, now seen corresponding path program 1 times [2023-12-16 00:50:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075244106] [2023-12-16 00:50:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:23,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075244106] [2023-12-16 00:50:23,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075244106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969745631] [2023-12-16 00:50:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:23,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:23,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:23,157 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) [2023-12-16 00:50:23,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:50:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:23,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:23,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:23,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969745631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:24,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-16 00:50:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836867485] [2023-12-16 00:50:24,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:50:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:50:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:50:24,538 INFO L87 Difference]: Start difference. First operand 2612 states and 3817 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,130 INFO L93 Difference]: Finished difference Result 4798 states and 6605 transitions. [2023-12-16 00:50:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 00:50:25,132 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 00:50:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,138 INFO L225 Difference]: With dead ends: 4798 [2023-12-16 00:50:25,138 INFO L226 Difference]: Without dead ends: 3271 [2023-12-16 00:50:25,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 00:50:25,140 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 9147 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9147 SdHoareTripleChecker+Valid, 6104 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:25,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9147 Valid, 6104 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:50:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2023-12-16 00:50:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3117. [2023-12-16 00:50:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3115 states have (on average 1.4314606741573033) internal successors, (4459), 3116 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4459 transitions. [2023-12-16 00:50:25,231 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4459 transitions. Word has length 56 [2023-12-16 00:50:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,232 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 4459 transitions. [2023-12-16 00:50:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4459 transitions. [2023-12-16 00:50:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:25,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:25,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:25,442 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,SelfDestructingSolverStorable16 [2023-12-16 00:50:25,442 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2030773760, now seen corresponding path program 1 times [2023-12-16 00:50:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586785793] [2023-12-16 00:50:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:25,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586785793] [2023-12-16 00:50:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586785793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:25,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737807400] [2023-12-16 00:50:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:25,707 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) [2023-12-16 00:50:25,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:50:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:25,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:26,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737807400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:27,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-16 00:50:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254376311] [2023-12-16 00:50:27,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 00:50:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 00:50:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-16 00:50:27,031 INFO L87 Difference]: Start difference. First operand 3117 states and 4459 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:27,956 INFO L93 Difference]: Finished difference Result 6681 states and 9005 transitions. [2023-12-16 00:50:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 00:50:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 00:50:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:27,965 INFO L225 Difference]: With dead ends: 6681 [2023-12-16 00:50:27,966 INFO L226 Difference]: Without dead ends: 4659 [2023-12-16 00:50:27,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=606, Invalid=1944, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 00:50:27,970 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 10747 mSDsluCounter, 7745 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10747 SdHoareTripleChecker+Valid, 9238 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:27,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10747 Valid, 9238 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:50:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2023-12-16 00:50:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 3153. [2023-12-16 00:50:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3151 states have (on average 1.4224055855284037) internal successors, (4482), 3152 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 4482 transitions. [2023-12-16 00:50:28,070 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 4482 transitions. Word has length 56 [2023-12-16 00:50:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:28,071 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 4482 transitions. [2023-12-16 00:50:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 4482 transitions. [2023-12-16 00:50:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:28,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:28,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:28,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:28,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 00:50:28,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:28,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1035298560, now seen corresponding path program 1 times [2023-12-16 00:50:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:28,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026785057] [2023-12-16 00:50:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026785057] [2023-12-16 00:50:28,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026785057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844356014] [2023-12-16 00:50:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:28,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:28,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:28,579 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) [2023-12-16 00:50:28,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:50:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:28,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:28,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:29,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844356014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:29,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:29,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-16 00:50:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369840353] [2023-12-16 00:50:29,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:29,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 00:50:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 00:50:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-16 00:50:29,767 INFO L87 Difference]: Start difference. First operand 3153 states and 4482 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:30,499 INFO L93 Difference]: Finished difference Result 7668 states and 10192 transitions. [2023-12-16 00:50:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:50:30,500 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 00:50:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:30,510 INFO L225 Difference]: With dead ends: 7668 [2023-12-16 00:50:30,510 INFO L226 Difference]: Without dead ends: 5793 [2023-12-16 00:50:30,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 00:50:30,515 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 7549 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7549 SdHoareTripleChecker+Valid, 6142 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:30,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7549 Valid, 6142 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:50:30,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2023-12-16 00:50:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 5403. [2023-12-16 00:50:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5401 states have (on average 1.3417885576745048) internal successors, (7247), 5402 states have internal predecessors, (7247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 7247 transitions. [2023-12-16 00:50:30,686 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 7247 transitions. Word has length 56 [2023-12-16 00:50:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:30,686 INFO L495 AbstractCegarLoop]: Abstraction has 5403 states and 7247 transitions. [2023-12-16 00:50:30,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 7247 transitions. [2023-12-16 00:50:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 00:50:30,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:30,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:30,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:30,893 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:30,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1142870954, now seen corresponding path program 1 times [2023-12-16 00:50:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081436328] [2023-12-16 00:50:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:31,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:31,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081436328] [2023-12-16 00:50:31,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081436328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:31,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642706212] [2023-12-16 00:50:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:31,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:31,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:31,572 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) [2023-12-16 00:50:31,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:50:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:31,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 00:50:31,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:33,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642706212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:36,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-16 00:50:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347656327] [2023-12-16 00:50:36,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-16 00:50:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-16 00:50:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 00:50:36,475 INFO L87 Difference]: Start difference. First operand 5403 states and 7247 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:51:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:51:03,908 INFO L93 Difference]: Finished difference Result 10701 states and 13861 transitions. [2023-12-16 00:51:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-16 00:51:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-16 00:51:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:51:03,919 INFO L225 Difference]: With dead ends: 10701 [2023-12-16 00:51:03,920 INFO L226 Difference]: Without dead ends: 6557 [2023-12-16 00:51:03,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9267 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=5230, Invalid=20530, Unknown=0, NotChecked=0, Total=25760 [2023-12-16 00:51:03,930 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 16440 mSDsluCounter, 16712 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16440 SdHoareTripleChecker+Valid, 18185 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:51:03,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16440 Valid, 18185 Invalid, 1664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 00:51:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2023-12-16 00:51:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 3607. [2023-12-16 00:51:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3605 states have (on average 1.3933425797503467) internal successors, (5023), 3606 states have internal predecessors, (5023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:51:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5023 transitions. [2023-12-16 00:51:04,085 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5023 transitions. Word has length 57 [2023-12-16 00:51:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:51:04,086 INFO L495 AbstractCegarLoop]: Abstraction has 3607 states and 5023 transitions. [2023-12-16 00:51:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:51:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5023 transitions. [2023-12-16 00:51:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 00:51:04,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:51:04,087 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] [2023-12-16 00:51:04,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:51:04,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:51:04,295 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:51:04,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:51:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -998773852, now seen corresponding path program 1 times [2023-12-16 00:51:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:51:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40725169] [2023-12-16 00:51:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:51:04,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:51:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:51:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:51:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:51:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40725169] [2023-12-16 00:51:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40725169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:51:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185040871] [2023-12-16 00:51:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:51:04,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:51:04,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:51:04,794 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) [2023-12-16 00:51:04,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:51:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:51:04,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 00:51:04,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 00:51:05,436 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:51:05,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 00:51:05,448 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:51:05,470 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 [2023-12-16 00:51:05,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:51:05,645 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-1 context. [2023-12-16 00:51:05,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:51:05,649 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] [2023-12-16 00:51:05,656 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:51:05,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:51:05 BoogieIcfgContainer [2023-12-16 00:51:05,658 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:51:05,659 INFO L158 Benchmark]: Toolchain (without parser) took 57113.94ms. Allocated memory was 179.3MB in the beginning and 929.0MB in the end (delta: 749.7MB). Free memory was 119.5MB in the beginning and 552.2MB in the end (delta: -432.7MB). Peak memory consumption was 319.1MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,659 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 179.3MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:51:05,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1624.20ms. Allocated memory was 179.3MB in the beginning and 268.4MB in the end (delta: 89.1MB). Free memory was 119.2MB in the beginning and 180.2MB in the end (delta: -61.0MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.29ms. Allocated memory is still 268.4MB. Free memory was 180.2MB in the beginning and 145.5MB in the end (delta: 34.6MB). Peak memory consumption was 39.4MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,660 INFO L158 Benchmark]: Boogie Preprocessor took 509.05ms. Allocated memory is still 268.4MB. Free memory was 145.5MB in the beginning and 138.2MB in the end (delta: 7.3MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,660 INFO L158 Benchmark]: RCFGBuilder took 4043.89ms. Allocated memory was 268.4MB in the beginning and 571.5MB in the end (delta: 303.0MB). Free memory was 138.2MB in the beginning and 402.4MB in the end (delta: -264.2MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,660 INFO L158 Benchmark]: TraceAbstraction took 50605.59ms. Allocated memory was 571.5MB in the beginning and 929.0MB in the end (delta: 357.6MB). Free memory was 401.4MB in the beginning and 552.2MB in the end (delta: -150.9MB). Peak memory consumption was 206.2MB. Max. memory is 8.0GB. [2023-12-16 00:51:05,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 179.3MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1624.20ms. Allocated memory was 179.3MB in the beginning and 268.4MB in the end (delta: 89.1MB). Free memory was 119.2MB in the beginning and 180.2MB in the end (delta: -61.0MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 324.29ms. Allocated memory is still 268.4MB. Free memory was 180.2MB in the beginning and 145.5MB in the end (delta: 34.6MB). Peak memory consumption was 39.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 509.05ms. Allocated memory is still 268.4MB. Free memory was 145.5MB in the beginning and 138.2MB in the end (delta: 7.3MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. * RCFGBuilder took 4043.89ms. Allocated memory was 268.4MB in the beginning and 571.5MB in the end (delta: 303.0MB). Free memory was 138.2MB in the beginning and 402.4MB in the end (delta: -264.2MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. * TraceAbstraction took 50605.59ms. Allocated memory was 571.5MB in the beginning and 929.0MB in the end (delta: 357.6MB). Free memory was 401.4MB in the beginning and 552.2MB in the end (delta: -150.9MB). Peak memory consumption was 206.2MB. 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: 292]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 292). Cancelled while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-1 context. - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.5s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85114 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85114 mSDsluCounter, 85997 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55773 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3762 IncrementalHoareTripleChecker+Invalid, 4058 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 30224 mSDtfsCounter, 3762 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11239 ImplicationChecksByTransitivity, 31.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5403occurred in iteration=19, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 6798 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 1143 NumberOfCodeBlocks, 1143 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1393 ConstructedInterpolants, 0 QuantifiedInterpolants, 16045 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 152/222 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