/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:35:03,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:35:03,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:35:03,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:35:03,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:35:03,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:35:03,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:35:03,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:35:03,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:35:03,135 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:35:03,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:35:03,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:35:03,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:35:03,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:35:03,138 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:35:03,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:35:03,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:35:03,139 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:35:03,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:35:03,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:35:03,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:35:03,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:35:03,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:35:03,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:35:03,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:35:03,141 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:35:03,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:35:03,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:35:03,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:35:03,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:35:03,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:35:03,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:35:03,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:35:03,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:35:03,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:35:03,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:35:03,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:35:03,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:35:03,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:35:03,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:35:03,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:35:03,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:35:03,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:35:03,146 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:35:03,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:35:03,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:35:03,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:35:03,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:35:03,439 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:35:03,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.01.cil-1.c [2023-12-15 17:35:04,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:35:05,139 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:35:05,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.01.cil-1.c [2023-12-15 17:35:05,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861391099/21829fba189842c5b006b63bb9fea262/FLAGe0cee95c3 [2023-12-15 17:35:05,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861391099/21829fba189842c5b006b63bb9fea262 [2023-12-15 17:35:05,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:35:05,208 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:35:05,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:35:05,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:35:05,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:35:05,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:35:05" (1/1) ... [2023-12-15 17:35:05,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324bdc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:05, skipping insertion in model container [2023-12-15 17:35:05,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:35:05" (1/1) ... [2023-12-15 17:35:05,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:35:07,056 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/Problem05_label44+token_ring.01.cil-1.c[377340,377353] [2023-12-15 17:35:07,079 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/Problem05_label44+token_ring.01.cil-1.c[383339,383352] [2023-12-15 17:35:07,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:35:07,200 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:35:07,948 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/Problem05_label44+token_ring.01.cil-1.c[377340,377353] [2023-12-15 17:35:07,956 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/Problem05_label44+token_ring.01.cil-1.c[383339,383352] [2023-12-15 17:35:07,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:35:08,031 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:35:08,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08 WrapperNode [2023-12-15 17:35:08,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:35:08,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:35:08,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:35:08,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:35:08,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,497 INFO L138 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12573 [2023-12-15 17:35:08,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:35:08,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:35:08,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:35:08,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:35:08,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,759 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]. [2023-12-15 17:35:08,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:08,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:09,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:09,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:09,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:35:09,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:35:09,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:35:09,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:35:09,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (1/1) ... [2023-12-15 17:35:09,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:35:09,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:09,157 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) [2023-12-15 17:35:09,181 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 [2023-12-15 17:35:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:35:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:35:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:35:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:35:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:35:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:35:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:35:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:35:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:35:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:35:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:35:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:35:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:35:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:35:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:35:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:35:09,271 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:35:09,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:35:15,807 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:35:15,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:35:15,901 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-15 17:35:15,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:35:15 BoogieIcfgContainer [2023-12-15 17:35:15,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:35:15,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:35:15,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:35:15,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:35:15,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:35:05" (1/3) ... [2023-12-15 17:35:15,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4d83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:35:15, skipping insertion in model container [2023-12-15 17:35:15,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:35:08" (2/3) ... [2023-12-15 17:35:15,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4d83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:35:15, skipping insertion in model container [2023-12-15 17:35:15,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:35:15" (3/3) ... [2023-12-15 17:35:15,911 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.01.cil-1.c [2023-12-15 17:35:15,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:35:15,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:35:16,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:35:16,025 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;@43d96270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:35:16,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:35:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 2194 states have (on average 1.8869644484958978) internal successors, (4140), 2197 states have internal predecessors, (4140), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 17:35:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:35:16,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:16,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:16,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:16,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash -231353693, now seen corresponding path program 1 times [2023-12-15 17:35:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8223481] [2023-12-15 17:35:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8223481] [2023-12-15 17:35:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8223481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:16,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:35:16,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715160969] [2023-12-15 17:35:16,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:35:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:35:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:16,508 INFO L87 Difference]: Start difference. First operand has 2218 states, 2194 states have (on average 1.8869644484958978) internal successors, (4140), 2197 states have internal predecessors, (4140), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:17,310 INFO L93 Difference]: Finished difference Result 4554 states and 8527 transitions. [2023-12-15 17:35:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:35:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 17:35:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:17,333 INFO L225 Difference]: With dead ends: 4554 [2023-12-15 17:35:17,333 INFO L226 Difference]: Without dead ends: 2337 [2023-12-15 17:35:17,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:17,343 INFO L413 NwaCegarLoop]: 4040 mSDtfsCounter, 4241 mSDsluCounter, 12089 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 16129 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:17,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 16129 Invalid, 518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:35:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2023-12-15 17:35:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2298. [2023-12-15 17:35:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2258 states have (on average 1.8432240921169176) internal successors, (4162), 2261 states have internal predecessors, (4162), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-12-15 17:35:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4215 transitions. [2023-12-15 17:35:17,460 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4215 transitions. Word has length 51 [2023-12-15 17:35:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:17,461 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4215 transitions. [2023-12-15 17:35:17,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4215 transitions. [2023-12-15 17:35:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:35:17,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:17,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:35:17,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:17,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash 614994855, now seen corresponding path program 1 times [2023-12-15 17:35:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:17,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808168588] [2023-12-15 17:35:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:17,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808168588] [2023-12-15 17:35:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808168588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:17,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:17,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992640853] [2023-12-15 17:35:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:17,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:17,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:17,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:17,642 INFO L87 Difference]: Start difference. First operand 2298 states and 4215 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:18,472 INFO L93 Difference]: Finished difference Result 2608 states and 4667 transitions. [2023-12-15 17:35:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:35:18,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 17:35:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:18,493 INFO L225 Difference]: With dead ends: 2608 [2023-12-15 17:35:18,493 INFO L226 Difference]: Without dead ends: 2438 [2023-12-15 17:35:18,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:35:18,497 INFO L413 NwaCegarLoop]: 4091 mSDtfsCounter, 4227 mSDsluCounter, 16209 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 20300 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 20300 Invalid, 781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:35:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2023-12-15 17:35:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2377. [2023-12-15 17:35:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2320 states have (on average 1.8323275862068966) internal successors, (4251), 2324 states have internal predecessors, (4251), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2023-12-15 17:35:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4326 transitions. [2023-12-15 17:35:18,563 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4326 transitions. Word has length 51 [2023-12-15 17:35:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:18,564 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 4326 transitions. [2023-12-15 17:35:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4326 transitions. [2023-12-15 17:35:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:35:18,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:18,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:35:18,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:18,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -756812443, now seen corresponding path program 1 times [2023-12-15 17:35:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501946611] [2023-12-15 17:35:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501946611] [2023-12-15 17:35:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501946611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:18,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:18,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:18,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797061490] [2023-12-15 17:35:18,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:18,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:18,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:18,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:18,716 INFO L87 Difference]: Start difference. First operand 2377 states and 4326 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:19,491 INFO L93 Difference]: Finished difference Result 2918 states and 5108 transitions. [2023-12-15 17:35:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:35:19,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 17:35:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:19,505 INFO L225 Difference]: With dead ends: 2918 [2023-12-15 17:35:19,505 INFO L226 Difference]: Without dead ends: 2669 [2023-12-15 17:35:19,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:35:19,507 INFO L413 NwaCegarLoop]: 4087 mSDtfsCounter, 4274 mSDsluCounter, 16204 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 20291 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:19,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 20291 Invalid, 772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:35:19,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2023-12-15 17:35:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2532. [2023-12-15 17:35:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2443 states have (on average 1.8125255832992222) internal successors, (4428), 2449 states have internal predecessors, (4428), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-12-15 17:35:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 4547 transitions. [2023-12-15 17:35:19,573 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 4547 transitions. Word has length 51 [2023-12-15 17:35:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:19,573 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 4547 transitions. [2023-12-15 17:35:19,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 4547 transitions. [2023-12-15 17:35:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:35:19,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:19,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:35:19,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:19,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1692787687, now seen corresponding path program 1 times [2023-12-15 17:35:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259314959] [2023-12-15 17:35:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259314959] [2023-12-15 17:35:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259314959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:19,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:19,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:35:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64017313] [2023-12-15 17:35:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:19,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:35:19,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:19,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:35:19,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:19,670 INFO L87 Difference]: Start difference. First operand 2532 states and 4547 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:20,410 INFO L93 Difference]: Finished difference Result 3404 states and 5803 transitions. [2023-12-15 17:35:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:35:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 17:35:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:20,424 INFO L225 Difference]: With dead ends: 3404 [2023-12-15 17:35:20,424 INFO L226 Difference]: Without dead ends: 3000 [2023-12-15 17:35:20,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:35:20,427 INFO L413 NwaCegarLoop]: 4076 mSDtfsCounter, 4221 mSDsluCounter, 16189 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 20265 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:20,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4228 Valid, 20265 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:35:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2023-12-15 17:35:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2813. [2023-12-15 17:35:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2666 states have (on average 1.7801950487621905) internal successors, (4746), 2676 states have internal predecessors, (4746), 85 states have call successors, (85), 52 states have call predecessors, (85), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2023-12-15 17:35:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4951 transitions. [2023-12-15 17:35:20,513 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4951 transitions. Word has length 51 [2023-12-15 17:35:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:20,513 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 4951 transitions. [2023-12-15 17:35:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4951 transitions. [2023-12-15 17:35:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:35:20,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:20,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:20,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:35:20,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:20,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 663428389, now seen corresponding path program 1 times [2023-12-15 17:35:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:20,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101147970] [2023-12-15 17:35:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:20,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101147970] [2023-12-15 17:35:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101147970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:20,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:35:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071747363] [2023-12-15 17:35:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:35:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:35:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:20,602 INFO L87 Difference]: Start difference. First operand 2813 states and 4951 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:21,288 INFO L93 Difference]: Finished difference Result 4060 states and 6755 transitions. [2023-12-15 17:35:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:35:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 17:35:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:21,304 INFO L225 Difference]: With dead ends: 4060 [2023-12-15 17:35:21,304 INFO L226 Difference]: Without dead ends: 3376 [2023-12-15 17:35:21,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:35:21,310 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 4332 mSDsluCounter, 12095 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 16201 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:21,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 16201 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:35:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2023-12-15 17:35:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3185. [2023-12-15 17:35:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 2955 states have (on average 1.740439932318105) internal successors, (5143), 2974 states have internal predecessors, (5143), 134 states have call successors, (134), 82 states have call predecessors, (134), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2023-12-15 17:35:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 5456 transitions. [2023-12-15 17:35:21,423 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 5456 transitions. Word has length 51 [2023-12-15 17:35:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:21,423 INFO L495 AbstractCegarLoop]: Abstraction has 3185 states and 5456 transitions. [2023-12-15 17:35:21,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:35:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 5456 transitions. [2023-12-15 17:35:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 17:35:21,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:21,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:21,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:35:21,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:21,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2142327730, now seen corresponding path program 1 times [2023-12-15 17:35:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:21,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247657383] [2023-12-15 17:35:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 17:35:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:35:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:21,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247657383] [2023-12-15 17:35:21,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247657383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:21,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985026414] [2023-12-15 17:35:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:21,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:21,532 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) [2023-12-15 17:35:21,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:35:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:21,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:35:21,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:35:21,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985026414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:21,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:21,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:35:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780175861] [2023-12-15 17:35:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:21,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:21,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:21,686 INFO L87 Difference]: Start difference. First operand 3185 states and 5456 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:21,813 INFO L93 Difference]: Finished difference Result 5213 states and 8379 transitions. [2023-12-15 17:35:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2023-12-15 17:35:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:21,832 INFO L225 Difference]: With dead ends: 5213 [2023-12-15 17:35:21,832 INFO L226 Difference]: Without dead ends: 4158 [2023-12-15 17:35:21,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:21,838 INFO L413 NwaCegarLoop]: 4183 mSDtfsCounter, 107 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 8260 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:21,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 8260 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2023-12-15 17:35:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4158. [2023-12-15 17:35:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 3719 states have (on average 1.6681903737563861) internal successors, (6204), 3751 states have internal predecessors, (6204), 253 states have call successors, (253), 160 states have call predecessors, (253), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2023-12-15 17:35:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 6833 transitions. [2023-12-15 17:35:21,971 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 6833 transitions. Word has length 83 [2023-12-15 17:35:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:21,972 INFO L495 AbstractCegarLoop]: Abstraction has 4158 states and 6833 transitions. [2023-12-15 17:35:21,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 6833 transitions. [2023-12-15 17:35:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 17:35:21,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:21,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:21,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:22,187 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,SelfDestructingSolverStorable5 [2023-12-15 17:35:22,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:22,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2141610504, now seen corresponding path program 1 times [2023-12-15 17:35:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619465056] [2023-12-15 17:35:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 17:35:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:35:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 17:35:22,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619465056] [2023-12-15 17:35:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619465056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52198869] [2023-12-15 17:35:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:22,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:22,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:22,346 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) [2023-12-15 17:35:22,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:35:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:22,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:35:22,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:35:22,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:22,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52198869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:22,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:22,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:35:22,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480650552] [2023-12-15 17:35:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:22,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:22,554 INFO L87 Difference]: Start difference. First operand 4158 states and 6833 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 17:35:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:22,735 INFO L93 Difference]: Finished difference Result 8088 states and 12416 transitions. [2023-12-15 17:35:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:22,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2023-12-15 17:35:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:22,778 INFO L225 Difference]: With dead ends: 8088 [2023-12-15 17:35:22,778 INFO L226 Difference]: Without dead ends: 6063 [2023-12-15 17:35:22,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:22,787 INFO L413 NwaCegarLoop]: 4087 mSDtfsCounter, 4024 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4024 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:22,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4024 Valid, 4193 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2023-12-15 17:35:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 6033. [2023-12-15 17:35:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 5200 states have (on average 1.585576923076923) internal successors, (8245), 5261 states have internal predecessors, (8245), 473 states have call successors, (473), 310 states have call predecessors, (473), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2023-12-15 17:35:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 9406 transitions. [2023-12-15 17:35:23,067 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 9406 transitions. Word has length 106 [2023-12-15 17:35:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:23,069 INFO L495 AbstractCegarLoop]: Abstraction has 6033 states and 9406 transitions. [2023-12-15 17:35:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 17:35:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 9406 transitions. [2023-12-15 17:35:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:35:23,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:23,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:23,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:23,289 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,SelfDestructingSolverStorable6 [2023-12-15 17:35:23,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:23,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -444207162, now seen corresponding path program 1 times [2023-12-15 17:35:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742446732] [2023-12-15 17:35:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 17:35:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 17:35:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 17:35:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:35:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 17:35:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742446732] [2023-12-15 17:35:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742446732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173742245] [2023-12-15 17:35:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:23,391 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) [2023-12-15 17:35:23,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:35:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:23,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:35:23,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 17:35:23,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:23,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173742245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:23,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:23,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:35:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987246688] [2023-12-15 17:35:23,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:23,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:23,540 INFO L87 Difference]: Start difference. First operand 6033 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 17:35:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:23,718 INFO L93 Difference]: Finished difference Result 9045 states and 13625 transitions. [2023-12-15 17:35:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 121 [2023-12-15 17:35:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:23,740 INFO L225 Difference]: With dead ends: 9045 [2023-12-15 17:35:23,740 INFO L226 Difference]: Without dead ends: 6321 [2023-12-15 17:35:23,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:23,750 INFO L413 NwaCegarLoop]: 4099 mSDtfsCounter, 4052 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4052 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:23,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4052 Valid, 4211 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2023-12-15 17:35:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 6283. [2023-12-15 17:35:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 5418 states have (on average 1.5612772240679218) internal successors, (8459), 5479 states have internal predecessors, (8459), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2023-12-15 17:35:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 9658 transitions. [2023-12-15 17:35:23,986 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 9658 transitions. Word has length 121 [2023-12-15 17:35:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:23,986 INFO L495 AbstractCegarLoop]: Abstraction has 6283 states and 9658 transitions. [2023-12-15 17:35:23,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 17:35:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 9658 transitions. [2023-12-15 17:35:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 17:35:23,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:23,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:24,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:24,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:24,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:24,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2140200845, now seen corresponding path program 1 times [2023-12-15 17:35:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:24,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673975431] [2023-12-15 17:35:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 17:35:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 17:35:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 17:35:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 17:35:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 17:35:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673975431] [2023-12-15 17:35:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673975431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230716057] [2023-12-15 17:35:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:24,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:24,341 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) [2023-12-15 17:35:24,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:35:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:24,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:35:24,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 17:35:24,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230716057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:24,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:35:24,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723938524] [2023-12-15 17:35:24,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:24,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:24,457 INFO L87 Difference]: Start difference. First operand 6283 states and 9658 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 17:35:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:24,873 INFO L93 Difference]: Finished difference Result 14267 states and 20760 transitions. [2023-12-15 17:35:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2023-12-15 17:35:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:24,913 INFO L225 Difference]: With dead ends: 14267 [2023-12-15 17:35:24,913 INFO L226 Difference]: Without dead ends: 10119 [2023-12-15 17:35:24,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:24,930 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 108 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:24,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 8258 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10119 states. [2023-12-15 17:35:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10119 to 10105. [2023-12-15 17:35:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 8426 states have (on average 1.4767386660337052) internal successors, (12443), 8547 states have internal predecessors, (12443), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-12-15 17:35:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 14918 transitions. [2023-12-15 17:35:25,416 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 14918 transitions. Word has length 122 [2023-12-15 17:35:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:25,417 INFO L495 AbstractCegarLoop]: Abstraction has 10105 states and 14918 transitions. [2023-12-15 17:35:25,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 17:35:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 14918 transitions. [2023-12-15 17:35:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 17:35:25,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:25,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:25,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:25,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:25,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1739388555, now seen corresponding path program 1 times [2023-12-15 17:35:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315057735] [2023-12-15 17:35:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-15 17:35:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 17:35:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315057735] [2023-12-15 17:35:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315057735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326820451] [2023-12-15 17:35:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:25,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:25,768 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) [2023-12-15 17:35:25,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:35:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:25,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:35:25,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 17:35:25,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326820451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:25,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:25,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:35:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422187759] [2023-12-15 17:35:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:25,916 INFO L87 Difference]: Start difference. First operand 10105 states and 14918 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 17:35:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:26,304 INFO L93 Difference]: Finished difference Result 14225 states and 20906 transitions. [2023-12-15 17:35:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2023-12-15 17:35:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:26,336 INFO L225 Difference]: With dead ends: 14225 [2023-12-15 17:35:26,337 INFO L226 Difference]: Without dead ends: 10123 [2023-12-15 17:35:26,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:26,354 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 94 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 8219 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 8219 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10123 states. [2023-12-15 17:35:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10123 to 10081. [2023-12-15 17:35:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 8402 states have (on average 1.4623899071649606) internal successors, (12287), 8523 states have internal predecessors, (12287), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-12-15 17:35:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 14762 transitions. [2023-12-15 17:35:26,744 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 14762 transitions. Word has length 123 [2023-12-15 17:35:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:26,744 INFO L495 AbstractCegarLoop]: Abstraction has 10081 states and 14762 transitions. [2023-12-15 17:35:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 17:35:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 14762 transitions. [2023-12-15 17:35:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 17:35:26,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:26,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:26,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:26,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 17:35:26,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:26,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash 448590933, now seen corresponding path program 1 times [2023-12-15 17:35:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733357492] [2023-12-15 17:35:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-15 17:35:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 17:35:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733357492] [2023-12-15 17:35:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733357492] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204278308] [2023-12-15 17:35:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:27,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:27,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:27,086 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) [2023-12-15 17:35:27,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:35:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:27,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:35:27,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-15 17:35:27,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204278308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:27,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:27,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:35:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633290315] [2023-12-15 17:35:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:27,220 INFO L87 Difference]: Start difference. First operand 10081 states and 14762 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:35:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:27,482 INFO L93 Difference]: Finished difference Result 15923 states and 22966 transitions. [2023-12-15 17:35:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-12-15 17:35:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:27,506 INFO L225 Difference]: With dead ends: 15923 [2023-12-15 17:35:27,506 INFO L226 Difference]: Without dead ends: 8949 [2023-12-15 17:35:27,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:35:27,524 INFO L413 NwaCegarLoop]: 4080 mSDtfsCounter, 4069 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:27,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 4100 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2023-12-15 17:35:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 8541. [2023-12-15 17:35:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8541 states, 7188 states have (on average 1.444769059543684) internal successors, (10385), 7277 states have internal predecessors, (10385), 753 states have call successors, (753), 534 states have call predecessors, (753), 598 states have return successors, (1098), 745 states have call predecessors, (1098), 753 states have call successors, (1098) [2023-12-15 17:35:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8541 states to 8541 states and 12236 transitions. [2023-12-15 17:35:27,954 INFO L78 Accepts]: Start accepts. Automaton has 8541 states and 12236 transitions. Word has length 123 [2023-12-15 17:35:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:27,954 INFO L495 AbstractCegarLoop]: Abstraction has 8541 states and 12236 transitions. [2023-12-15 17:35:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:35:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8541 states and 12236 transitions. [2023-12-15 17:35:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 17:35:27,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:27,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:27,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:28,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:28,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 901967092, now seen corresponding path program 1 times [2023-12-15 17:35:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156135906] [2023-12-15 17:35:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 17:35:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 17:35:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156135906] [2023-12-15 17:35:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156135906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526640839] [2023-12-15 17:35:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:28,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:28,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:28,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:35:28,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:35:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:28,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:35:28,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-15 17:35:28,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526640839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-15 17:35:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164431404] [2023-12-15 17:35:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:35:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:35:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:35:28,452 INFO L87 Difference]: Start difference. First operand 8541 states and 12236 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:28,760 INFO L93 Difference]: Finished difference Result 11039 states and 15585 transitions. [2023-12-15 17:35:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:35:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2023-12-15 17:35:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:28,781 INFO L225 Difference]: With dead ends: 11039 [2023-12-15 17:35:28,781 INFO L226 Difference]: Without dead ends: 6877 [2023-12-15 17:35:28,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 17:35:28,794 INFO L413 NwaCegarLoop]: 4033 mSDtfsCounter, 4086 mSDsluCounter, 8026 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 12059 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:28,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 12059 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:35:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2023-12-15 17:35:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 6853. [2023-12-15 17:35:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 5858 states have (on average 1.4617616934107205) internal successors, (8563), 5911 states have internal predecessors, (8563), 565 states have call successors, (565), 396 states have call predecessors, (565), 428 states have return successors, (766), 553 states have call predecessors, (766), 565 states have call successors, (766) [2023-12-15 17:35:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 9894 transitions. [2023-12-15 17:35:29,040 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 9894 transitions. Word has length 124 [2023-12-15 17:35:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:29,041 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 9894 transitions. [2023-12-15 17:35:29,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 9894 transitions. [2023-12-15 17:35:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 17:35:29,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:29,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:29,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:29,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:29,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 18458102, now seen corresponding path program 1 times [2023-12-15 17:35:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881255355] [2023-12-15 17:35:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 17:35:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 17:35:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881255355] [2023-12-15 17:35:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881255355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418051781] [2023-12-15 17:35:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:29,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:29,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:35:29,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 17:35:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:29,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:35:29,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-15 17:35:29,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418051781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:29,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:29,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-15 17:35:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392895489] [2023-12-15 17:35:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:35:29,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:35:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:35:29,558 INFO L87 Difference]: Start difference. First operand 6853 states and 9894 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:29,868 INFO L93 Difference]: Finished difference Result 10693 states and 14934 transitions. [2023-12-15 17:35:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:35:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2023-12-15 17:35:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:29,886 INFO L225 Difference]: With dead ends: 10693 [2023-12-15 17:35:29,887 INFO L226 Difference]: Without dead ends: 6507 [2023-12-15 17:35:29,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:35:29,899 INFO L413 NwaCegarLoop]: 4031 mSDtfsCounter, 4116 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4125 SdHoareTripleChecker+Valid, 12053 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:29,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4125 Valid, 12053 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:35:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2023-12-15 17:35:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 4943. [2023-12-15 17:35:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4368 states have (on average 1.5137362637362637) internal successors, (6612), 4397 states have internal predecessors, (6612), 329 states have call successors, (329), 228 states have call predecessors, (329), 244 states have return successors, (439), 321 states have call predecessors, (439), 329 states have call successors, (439) [2023-12-15 17:35:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7380 transitions. [2023-12-15 17:35:30,076 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7380 transitions. Word has length 124 [2023-12-15 17:35:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:30,076 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 7380 transitions. [2023-12-15 17:35:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7380 transitions. [2023-12-15 17:35:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 17:35:30,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:30,082 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:30,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:30,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 17:35:30,288 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:30,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -10042188, now seen corresponding path program 1 times [2023-12-15 17:35:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:30,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18983774] [2023-12-15 17:35:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 17:35:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 17:35:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18983774] [2023-12-15 17:35:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18983774] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687124600] [2023-12-15 17:35:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:30,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:35:30,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 17:35:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:30,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 17:35:30,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 17:35:30,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687124600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:30,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:30,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-15 17:35:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980078394] [2023-12-15 17:35:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:35:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:35:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:30,481 INFO L87 Difference]: Start difference. First operand 4943 states and 7380 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:30,685 INFO L93 Difference]: Finished difference Result 6767 states and 9656 transitions. [2023-12-15 17:35:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:35:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2023-12-15 17:35:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:30,693 INFO L225 Difference]: With dead ends: 6767 [2023-12-15 17:35:30,693 INFO L226 Difference]: Without dead ends: 3956 [2023-12-15 17:35:30,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:30,698 INFO L413 NwaCegarLoop]: 4072 mSDtfsCounter, 11 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12209 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:30,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12209 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2023-12-15 17:35:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3956. [2023-12-15 17:35:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3589 states have (on average 1.5753691836166064) internal successors, (5654), 3608 states have internal predecessors, (5654), 207 states have call successors, (207), 146 states have call predecessors, (207), 158 states have return successors, (252), 203 states have call predecessors, (252), 207 states have call successors, (252) [2023-12-15 17:35:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 6113 transitions. [2023-12-15 17:35:30,803 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 6113 transitions. Word has length 124 [2023-12-15 17:35:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:30,803 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 6113 transitions. [2023-12-15 17:35:30,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 6113 transitions. [2023-12-15 17:35:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 17:35:30,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:30,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:30,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:31,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 17:35:31,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:31,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash -505096204, now seen corresponding path program 1 times [2023-12-15 17:35:31,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094908500] [2023-12-15 17:35:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 17:35:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-15 17:35:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094908500] [2023-12-15 17:35:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094908500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:35:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051352335] [2023-12-15 17:35:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:31,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:35:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:35:31,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:35:31,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 17:35:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 17:35:31,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:35:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 17:35:31,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:35:31,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051352335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:35:31,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-15 17:35:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614986945] [2023-12-15 17:35:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:35:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:35:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:31,221 INFO L87 Difference]: Start difference. First operand 3956 states and 6113 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:31,315 INFO L93 Difference]: Finished difference Result 5035 states and 7401 transitions. [2023-12-15 17:35:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:35:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2023-12-15 17:35:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:31,322 INFO L225 Difference]: With dead ends: 5035 [2023-12-15 17:35:31,322 INFO L226 Difference]: Without dead ends: 2840 [2023-12-15 17:35:31,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:31,327 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12208 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:31,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12208 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:35:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2023-12-15 17:35:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2840. [2023-12-15 17:35:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2694 states have (on average 1.7071269487750558) internal successors, (4599), 2702 states have internal predecessors, (4599), 83 states have call successors, (83), 57 states have call predecessors, (83), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2023-12-15 17:35:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4769 transitions. [2023-12-15 17:35:31,388 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4769 transitions. Word has length 124 [2023-12-15 17:35:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:31,388 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 4769 transitions. [2023-12-15 17:35:31,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:35:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4769 transitions. [2023-12-15 17:35:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 17:35:31,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:31,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:31,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 17:35:31,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 17:35:31,596 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:31,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 78029492, now seen corresponding path program 1 times [2023-12-15 17:35:31,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:31,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800202424] [2023-12-15 17:35:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:35:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:35:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:35:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 17:35:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 17:35:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 17:35:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 17:35:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:35:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:35:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 17:35:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 17:35:31,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:31,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800202424] [2023-12-15 17:35:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800202424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:31,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:31,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:35:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106914043] [2023-12-15 17:35:31,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:31,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:35:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:31,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:35:31,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:35:31,712 INFO L87 Difference]: Start difference. First operand 2840 states and 4769 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-15 17:35:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:32,140 INFO L93 Difference]: Finished difference Result 2860 states and 4789 transitions. [2023-12-15 17:35:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:35:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 124 [2023-12-15 17:35:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:32,145 INFO L225 Difference]: With dead ends: 2860 [2023-12-15 17:35:32,145 INFO L226 Difference]: Without dead ends: 2122 [2023-12-15 17:35:32,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:35:32,147 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4280 mSDsluCounter, 12063 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 16136 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:32,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 16136 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:35:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-15 17:35:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2023-12-15 17:35:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.866100895803866) internal successors, (3958), 2121 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3958 transitions. [2023-12-15 17:35:32,177 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3958 transitions. Word has length 124 [2023-12-15 17:35:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:32,177 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3958 transitions. [2023-12-15 17:35:32,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-15 17:35:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3958 transitions. [2023-12-15 17:35:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2023-12-15 17:35:32,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:32,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:35:32,236 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:32,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1260843767, now seen corresponding path program 1 times [2023-12-15 17:35:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525145318] [2023-12-15 17:35:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:34,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525145318] [2023-12-15 17:35:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525145318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:34,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:34,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:35:34,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681712997] [2023-12-15 17:35:34,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:34,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:34,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:35:34,384 INFO L87 Difference]: Start difference. First operand 2122 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:39,964 INFO L93 Difference]: Finished difference Result 6076 states and 11441 transitions. [2023-12-15 17:35:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:39,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 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 1653 [2023-12-15 17:35:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:39,976 INFO L225 Difference]: With dead ends: 6076 [2023-12-15 17:35:39,977 INFO L226 Difference]: Without dead ends: 3956 [2023-12-15 17:35:39,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:35:39,981 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 517 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5894 mSolverCounterSat, 1830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 7724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1830 IncrementalHoareTripleChecker+Valid, 5894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:39,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 824 Invalid, 7724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1830 Valid, 5894 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-15 17:35:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2023-12-15 17:35:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3893. [2023-12-15 17:35:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3892 states have (on average 1.8661356628982528) internal successors, (7263), 3892 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 7263 transitions. [2023-12-15 17:35:40,041 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 7263 transitions. Word has length 1653 [2023-12-15 17:35:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:40,044 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 7263 transitions. [2023-12-15 17:35:40,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 7263 transitions. [2023-12-15 17:35:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2023-12-15 17:35:40,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:40,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:40,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:35:40,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:40,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1085680096, now seen corresponding path program 1 times [2023-12-15 17:35:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:40,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828562435] [2023-12-15 17:35:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:41,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828562435] [2023-12-15 17:35:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828562435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:35:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947147645] [2023-12-15 17:35:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:41,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:35:41,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:35:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:35:41,473 INFO L87 Difference]: Start difference. First operand 3893 states and 7263 transitions. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:35:47,025 INFO L93 Difference]: Finished difference Result 9617 states and 17978 transitions. [2023-12-15 17:35:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:35:47,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 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 1659 [2023-12-15 17:35:47,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:35:47,038 INFO L225 Difference]: With dead ends: 9617 [2023-12-15 17:35:47,038 INFO L226 Difference]: Without dead ends: 5726 [2023-12-15 17:35:47,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:35:47,046 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 1998 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 2286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 7532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2286 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:47,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 1572 Invalid, 7532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2286 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-15 17:35:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2023-12-15 17:35:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5643. [2023-12-15 17:35:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5643 states, 5642 states have (on average 1.6267281105990783) internal successors, (9178), 5642 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 9178 transitions. [2023-12-15 17:35:47,120 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 9178 transitions. Word has length 1659 [2023-12-15 17:35:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:35:47,121 INFO L495 AbstractCegarLoop]: Abstraction has 5643 states and 9178 transitions. [2023-12-15 17:35:47,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:35:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 9178 transitions. [2023-12-15 17:35:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2023-12-15 17:35:47,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:35:47,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:35:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:35:47,149 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:35:47,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:35:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash 360289721, now seen corresponding path program 1 times [2023-12-15 17:35:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:35:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262050763] [2023-12-15 17:35:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:35:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:35:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:35:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:35:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:35:50,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262050763] [2023-12-15 17:35:50,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262050763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:35:50,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:35:50,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:35:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999576602] [2023-12-15 17:35:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:35:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:35:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:35:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:35:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:35:50,298 INFO L87 Difference]: Start difference. First operand 5643 states and 9178 transitions. Second operand has 4 states, 4 states have (on average 415.0) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 17:35:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:35:53,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:35:53,567 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1179 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 1436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 4922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1436 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:35:53,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 454 Invalid, 4922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1436 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 17:35:53,568 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:35:53,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:35:53,569 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5643states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (6610 states constructed, input type IntersectNwa). [2023-12-15 17:35:53,573 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:35:53,576 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] [2023-12-15 17:35:53,579 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:35:53,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:35:53 BoogieIcfgContainer [2023-12-15 17:35:53,581 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:35:53,582 INFO L158 Benchmark]: Toolchain (without parser) took 48373.77ms. Allocated memory was 309.3MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 215.5MB in the beginning and 685.2MB in the end (delta: -469.7MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 17:35:53,582 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 148.1MB in the beginning and 147.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:35:53,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2820.74ms. Allocated memory is still 309.3MB. Free memory was 215.5MB in the beginning and 168.6MB in the end (delta: 47.0MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 465.05ms. Allocated memory was 309.3MB in the beginning and 477.1MB in the end (delta: 167.8MB). Free memory was 168.6MB in the beginning and 332.7MB in the end (delta: -164.1MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,583 INFO L158 Benchmark]: Boogie Preprocessor took 632.58ms. Allocated memory is still 477.1MB. Free memory was 332.7MB in the beginning and 308.1MB in the end (delta: 24.6MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,584 INFO L158 Benchmark]: RCFGBuilder took 6770.40ms. Allocated memory was 477.1MB in the beginning and 1.3GB in the end (delta: 803.2MB). Free memory was 308.1MB in the beginning and 906.5MB in the end (delta: -598.4MB). Peak memory consumption was 389.3MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,587 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 [2023-12-15 17:35:53,588 INFO L158 Benchmark]: TraceAbstraction took 37676.82ms. Allocated memory was 1.3GB in the beginning and 1.9GB in the end (delta: 607.1MB). Free memory was 906.0MB in the beginning and 685.2MB in the end (delta: 220.8MB). Peak memory consumption was 827.9MB. Max. memory is 8.0GB. [2023-12-15 17:35:53,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 148.1MB in the beginning and 147.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2820.74ms. Allocated memory is still 309.3MB. Free memory was 215.5MB in the beginning and 168.6MB in the end (delta: 47.0MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 465.05ms. Allocated memory was 309.3MB in the beginning and 477.1MB in the end (delta: 167.8MB). Free memory was 168.6MB in the beginning and 332.7MB in the end (delta: -164.1MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 632.58ms. Allocated memory is still 477.1MB. Free memory was 332.7MB in the beginning and 308.1MB in the end (delta: 24.6MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. * RCFGBuilder took 6770.40ms. Allocated memory was 477.1MB in the beginning and 1.3GB in the end (delta: 803.2MB). Free memory was 308.1MB in the beginning and 906.5MB in the end (delta: -598.4MB). Peak memory consumption was 389.3MB. Max. memory is 8.0GB. * TraceAbstraction took 37676.82ms. Allocated memory was 1.3GB in the beginning and 1.9GB in the end (delta: 607.1MB). Free memory was 906.0MB in the beginning and 685.2MB in the end (delta: 220.8MB). Peak memory consumption was 827.9MB. 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: 11022]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11022). Cancelled while NwaCegarLoop was constructing difference of abstraction (5643states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (6610 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (5643states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (6610 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2218 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 37.6s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50034 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49938 mSDsluCounter, 197942 SdHoareTripleChecker+Invalid, 13.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130036 mSDsCounter, 5924 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18835 IncrementalHoareTripleChecker+Invalid, 24759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5924 mSolverCounterUnsat, 67906 mSDtfsCounter, 18835 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1603 GetRequests, 1471 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10105occurred in iteration=9, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 2881 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 7699 NumberOfCodeBlocks, 7699 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 7670 ConstructedInterpolants, 0 QuantifiedInterpolants, 51986 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4074 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 29 InterpolantComputations, 19 PerfectInterpolantSequences, 1247/1403 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