/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:44:37,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:44:37,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:44:37,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:44:37,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:44:37,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:44:37,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:44:37,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:44:37,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:44:37,799 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:44:37,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:44:37,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:44:37,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:44:37,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:44:37,801 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:44:37,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:44:37,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:44:37,801 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:44:37,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:44:37,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:44:37,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:44:37,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:44:37,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:44:37,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:44:37,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:44:37,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:44:37,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:44:37,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:44:37,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:44:37,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:44:37,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:44:37,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:44:37,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:44:37,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:44:37,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:44:37,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:44:37,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:44:37,822 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:44:37,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:44:37,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:44:37,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:44:37,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:44:37,998 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:44:37,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.08.cil-2.c [2023-12-20 11:44:38,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:44:39,439 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:44:39,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.08.cil-2.c [2023-12-20 11:44:39,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970878e98/6d9680e22f664eff86356efe4aca1f00/FLAG486799eaf [2023-12-20 11:44:39,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970878e98/6d9680e22f664eff86356efe4aca1f00 [2023-12-20 11:44:39,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:44:39,502 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:44:39,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:44:39,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:44:39,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:44:39,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:44:39" (1/1) ... [2023-12-20 11:44:39,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b22086f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:39, skipping insertion in model container [2023-12-20 11:44:39,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:44:39" (1/1) ... [2023-12-20 11:44:39,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:44:40,844 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_label49+token_ring.08.cil-2.c[380593,380606] [2023-12-20 11:44:40,865 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_label49+token_ring.08.cil-2.c[383339,383352] [2023-12-20 11:44:41,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:44:41,067 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:44:41,670 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_label49+token_ring.08.cil-2.c[380593,380606] [2023-12-20 11:44:41,673 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_label49+token_ring.08.cil-2.c[383339,383352] [2023-12-20 11:44:41,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:44:41,737 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:44:41,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41 WrapperNode [2023-12-20 11:44:41,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:44:41,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:44:41,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:44:41,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:44:41,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:41,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,143 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12999 [2023-12-20 11:44:42,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:44:42,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:44:42,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:44:42,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:44:42,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,301 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 11:44:42,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:44:42,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:44:42,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:44:42,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:44:42,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (1/1) ... [2023-12-20 11:44:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:44:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:44:42,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 11:44:42,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 11:44:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:44:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:44:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:44:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:44:42,649 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:44:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:44:42,649 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:44:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:44:42,649 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:44:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:44:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:44:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:44:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:44:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:44:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:44:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:44:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:44:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:44:42,753 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:44:42,755 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:44:48,495 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:44:48,557 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:44:48,558 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-20 11:44:48,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:44:48 BoogieIcfgContainer [2023-12-20 11:44:48,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:44:48,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:44:48,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:44:48,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:44:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:44:39" (1/3) ... [2023-12-20 11:44:48,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:44:48, skipping insertion in model container [2023-12-20 11:44:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:41" (2/3) ... [2023-12-20 11:44:48,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:44:48, skipping insertion in model container [2023-12-20 11:44:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:44:48" (3/3) ... [2023-12-20 11:44:48,564 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.08.cil-2.c [2023-12-20 11:44:48,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:44:48,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:44:48,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:44:48,645 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;@3a3028c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:44:48,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:44:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 11:44:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:48,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:48,674 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] [2023-12-20 11:44:48,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:48,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:48,679 INFO L85 PathProgramCache]: Analyzing trace with hash 947459073, now seen corresponding path program 1 times [2023-12-20 11:44:48,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157529322] [2023-12-20 11:44:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:49,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:49,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157529322] [2023-12-20 11:44:49,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157529322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:49,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:49,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:44:49,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406314676] [2023-12-20 11:44:49,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:44:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:44:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:44:49,067 INFO L87 Difference]: Start difference. First operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:50,188 INFO L93 Difference]: Finished difference Result 4859 states and 9094 transitions. [2023-12-20 11:44:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:44:50,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:44:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:50,210 INFO L225 Difference]: With dead ends: 4859 [2023-12-20 11:44:50,211 INFO L226 Difference]: Without dead ends: 2472 [2023-12-20 11:44:50,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:44:50,223 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 709 mSDsluCounter, 12134 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:50,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 16326 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:44:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-12-20 11:44:50,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2382. [2023-12-20 11:44:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2350 states have (on average 1.8429787234042554) internal successors, (4331), 2353 states have internal predecessors, (4331), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-20 11:44:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4377 transitions. [2023-12-20 11:44:50,336 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4377 transitions. Word has length 122 [2023-12-20 11:44:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:50,337 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4377 transitions. [2023-12-20 11:44:50,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4377 transitions. [2023-12-20 11:44:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:50,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:50,343 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] [2023-12-20 11:44:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:44:50,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:50,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -981473153, now seen corresponding path program 1 times [2023-12-20 11:44:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835479809] [2023-12-20 11:44:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:50,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:50,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835479809] [2023-12-20 11:44:50,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835479809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:50,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:44:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251175898] [2023-12-20 11:44:50,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:50,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:44:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:44:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:44:50,556 INFO L87 Difference]: Start difference. First operand 2382 states and 4377 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:52,295 INFO L93 Difference]: Finished difference Result 3067 states and 5511 transitions. [2023-12-20 11:44:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:44:52,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:44:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:52,307 INFO L225 Difference]: With dead ends: 3067 [2023-12-20 11:44:52,307 INFO L226 Difference]: Without dead ends: 2820 [2023-12-20 11:44:52,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:52,309 INFO L413 NwaCegarLoop]: 4165 mSDtfsCounter, 5014 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16648 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:52,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16648 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:44:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2023-12-20 11:44:52,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2639. [2023-12-20 11:44:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2583 states have (on average 1.8246225319396052) internal successors, (4713), 2587 states have internal predecessors, (4713), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-20 11:44:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 4796 transitions. [2023-12-20 11:44:52,371 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 4796 transitions. Word has length 122 [2023-12-20 11:44:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:52,372 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 4796 transitions. [2023-12-20 11:44:52,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 4796 transitions. [2023-12-20 11:44:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:52,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:52,375 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] [2023-12-20 11:44:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:44:52,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:52,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1257398465, now seen corresponding path program 1 times [2023-12-20 11:44:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221866668] [2023-12-20 11:44:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:52,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:52,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:52,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221866668] [2023-12-20 11:44:52,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221866668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:52,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244470729] [2023-12-20 11:44:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:52,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:52,585 INFO L87 Difference]: Start difference. First operand 2639 states and 4796 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:54,888 INFO L93 Difference]: Finished difference Result 3682 states and 6521 transitions. [2023-12-20 11:44:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:44:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:44:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:54,898 INFO L225 Difference]: With dead ends: 3682 [2023-12-20 11:44:54,898 INFO L226 Difference]: Without dead ends: 3178 [2023-12-20 11:44:54,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:44:54,900 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 5033 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5048 SdHoareTripleChecker+Valid, 21346 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5048 Valid, 21346 Invalid, 2710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:44:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2023-12-20 11:44:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2877. [2023-12-20 11:44:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2797 states have (on average 1.8080085806220951) internal successors, (5057), 2802 states have internal predecessors, (5057), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-20 11:44:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 5176 transitions. [2023-12-20 11:44:54,970 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 5176 transitions. Word has length 122 [2023-12-20 11:44:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:54,970 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 5176 transitions. [2023-12-20 11:44:54,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 5176 transitions. [2023-12-20 11:44:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:54,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:54,972 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] [2023-12-20 11:44:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:44:54,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:54,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 131895549, now seen corresponding path program 1 times [2023-12-20 11:44:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160825970] [2023-12-20 11:44:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:55,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160825970] [2023-12-20 11:44:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160825970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:55,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95631954] [2023-12-20 11:44:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:55,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:55,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:55,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:55,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:55,191 INFO L87 Difference]: Start difference. First operand 2877 states and 5176 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:57,378 INFO L93 Difference]: Finished difference Result 4583 states and 7993 transitions. [2023-12-20 11:44:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:44:57,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:44:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:57,392 INFO L225 Difference]: With dead ends: 4583 [2023-12-20 11:44:57,392 INFO L226 Difference]: Without dead ends: 3841 [2023-12-20 11:44:57,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:44:57,395 INFO L413 NwaCegarLoop]: 4174 mSDtfsCounter, 5113 mSDsluCounter, 16625 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 20799 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:57,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 20799 Invalid, 2287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:44:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2023-12-20 11:44:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3354. [2023-12-20 11:44:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7811531308121513) internal successors, (5746), 3233 states have internal predecessors, (5746), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:44:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5941 transitions. [2023-12-20 11:44:57,496 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5941 transitions. Word has length 122 [2023-12-20 11:44:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:57,497 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5941 transitions. [2023-12-20 11:44:57,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5941 transitions. [2023-12-20 11:44:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:57,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:57,499 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] [2023-12-20 11:44:57,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:44:57,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:57,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1901498497, now seen corresponding path program 1 times [2023-12-20 11:44:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980149201] [2023-12-20 11:44:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980149201] [2023-12-20 11:44:57,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980149201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:57,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:57,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786071616] [2023-12-20 11:44:57,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:57,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:57,716 INFO L87 Difference]: Start difference. First operand 3354 states and 5941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:59,028 INFO L93 Difference]: Finished difference Result 5048 states and 8749 transitions. [2023-12-20 11:44:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:44:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:44:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:59,041 INFO L225 Difference]: With dead ends: 5048 [2023-12-20 11:44:59,041 INFO L226 Difference]: Without dead ends: 3829 [2023-12-20 11:44:59,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:59,048 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4742 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:59,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 20576 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:44:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2023-12-20 11:44:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3354. [2023-12-20 11:44:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7796032238065715) internal successors, (5741), 3233 states have internal predecessors, (5741), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:44:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5936 transitions. [2023-12-20 11:44:59,139 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5936 transitions. Word has length 122 [2023-12-20 11:44:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:59,139 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5936 transitions. [2023-12-20 11:44:59,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:44:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5936 transitions. [2023-12-20 11:44:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:44:59,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:59,141 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] [2023-12-20 11:44:59,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:44:59,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:59,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash 526760125, now seen corresponding path program 1 times [2023-12-20 11:44:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906952423] [2023-12-20 11:44:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:44:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:44:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:44:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:44:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906952423] [2023-12-20 11:44:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906952423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:59,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461134718] [2023-12-20 11:44:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:59,311 INFO L87 Difference]: Start difference. First operand 3354 states and 5936 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:00,392 INFO L93 Difference]: Finished difference Result 5037 states and 8713 transitions. [2023-12-20 11:45:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:00,404 INFO L225 Difference]: With dead ends: 5037 [2023-12-20 11:45:00,404 INFO L226 Difference]: Without dead ends: 3818 [2023-12-20 11:45:00,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:00,411 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4848 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:00,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 16491 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:45:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2023-12-20 11:45:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3354. [2023-12-20 11:45:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.778053316800992) internal successors, (5736), 3233 states have internal predecessors, (5736), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:45:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5931 transitions. [2023-12-20 11:45:00,485 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5931 transitions. Word has length 122 [2023-12-20 11:45:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:00,485 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5931 transitions. [2023-12-20 11:45:00,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5931 transitions. [2023-12-20 11:45:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:00,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:00,487 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] [2023-12-20 11:45:00,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:45:00,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:00,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1870710405, now seen corresponding path program 1 times [2023-12-20 11:45:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:00,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434809785] [2023-12-20 11:45:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434809785] [2023-12-20 11:45:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434809785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958320853] [2023-12-20 11:45:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:00,645 INFO L87 Difference]: Start difference. First operand 3354 states and 5931 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:02,900 INFO L93 Difference]: Finished difference Result 6295 states and 10728 transitions. [2023-12-20 11:45:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:02,932 INFO L225 Difference]: With dead ends: 6295 [2023-12-20 11:45:02,932 INFO L226 Difference]: Without dead ends: 5076 [2023-12-20 11:45:02,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:02,938 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5016 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5031 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:02,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5031 Valid, 21344 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:45:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2023-12-20 11:45:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4323. [2023-12-20 11:45:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.738716760185411) internal successors, (7127), 4110 states have internal predecessors, (7127), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-20 11:45:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7480 transitions. [2023-12-20 11:45:03,070 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7480 transitions. Word has length 122 [2023-12-20 11:45:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7480 transitions. [2023-12-20 11:45:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7480 transitions. [2023-12-20 11:45:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:03,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:03,074 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] [2023-12-20 11:45:03,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:45:03,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:03,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -839669507, now seen corresponding path program 1 times [2023-12-20 11:45:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834536322] [2023-12-20 11:45:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:03,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:03,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834536322] [2023-12-20 11:45:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834536322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:03,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734855190] [2023-12-20 11:45:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:03,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:03,240 INFO L87 Difference]: Start difference. First operand 4323 states and 7480 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:04,443 INFO L93 Difference]: Finished difference Result 7271 states and 12318 transitions. [2023-12-20 11:45:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:45:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:04,455 INFO L225 Difference]: With dead ends: 7271 [2023-12-20 11:45:04,456 INFO L226 Difference]: Without dead ends: 5083 [2023-12-20 11:45:04,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:45:04,462 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4738 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 20576 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:45:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2023-12-20 11:45:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 4323. [2023-12-20 11:45:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.7365211027079777) internal successors, (7118), 4110 states have internal predecessors, (7118), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-20 11:45:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7471 transitions. [2023-12-20 11:45:04,566 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7471 transitions. Word has length 122 [2023-12-20 11:45:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:04,566 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7471 transitions. [2023-12-20 11:45:04,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7471 transitions. [2023-12-20 11:45:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:04,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:04,568 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] [2023-12-20 11:45:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:45:04,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1548894523, now seen corresponding path program 1 times [2023-12-20 11:45:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147135376] [2023-12-20 11:45:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147135376] [2023-12-20 11:45:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147135376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:04,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544157914] [2023-12-20 11:45:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:04,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:04,719 INFO L87 Difference]: Start difference. First operand 4323 states and 7471 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:07,106 INFO L93 Difference]: Finished difference Result 9746 states and 16269 transitions. [2023-12-20 11:45:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:45:07,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:07,123 INFO L225 Difference]: With dead ends: 9746 [2023-12-20 11:45:07,124 INFO L226 Difference]: Without dead ends: 7558 [2023-12-20 11:45:07,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:45:07,131 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5008 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5023 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:07,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5023 Valid, 21344 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:45:07,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2023-12-20 11:45:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 6271. [2023-12-20 11:45:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5855 states have (on average 1.690862510674637) internal successors, (9900), 5874 states have internal predecessors, (9900), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-20 11:45:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 10587 transitions. [2023-12-20 11:45:07,333 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 10587 transitions. Word has length 122 [2023-12-20 11:45:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:07,334 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 10587 transitions. [2023-12-20 11:45:07,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 10587 transitions. [2023-12-20 11:45:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:07,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:07,337 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] [2023-12-20 11:45:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:45:07,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:07,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1145001667, now seen corresponding path program 1 times [2023-12-20 11:45:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862058960] [2023-12-20 11:45:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862058960] [2023-12-20 11:45:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862058960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:07,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462380989] [2023-12-20 11:45:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:07,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:07,493 INFO L87 Difference]: Start difference. First operand 6271 states and 10587 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:10,067 INFO L93 Difference]: Finished difference Result 18328 states and 30157 transitions. [2023-12-20 11:45:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:10,103 INFO L225 Difference]: With dead ends: 18328 [2023-12-20 11:45:10,104 INFO L226 Difference]: Without dead ends: 14192 [2023-12-20 11:45:10,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:10,123 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5301 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:10,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5325 Valid, 21337 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:45:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2023-12-20 11:45:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 10148. [2023-12-20 11:45:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 9364 states have (on average 1.6516445963263562) internal successors, (15466), 9399 states have internal predecessors, (15466), 552 states have call successors, (552), 199 states have call predecessors, (552), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-20 11:45:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 16843 transitions. [2023-12-20 11:45:10,506 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 16843 transitions. Word has length 122 [2023-12-20 11:45:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:10,507 INFO L495 AbstractCegarLoop]: Abstraction has 10148 states and 16843 transitions. [2023-12-20 11:45:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 16843 transitions. [2023-12-20 11:45:10,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:10,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:10,512 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] [2023-12-20 11:45:10,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:45:10,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:10,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2093234427, now seen corresponding path program 1 times [2023-12-20 11:45:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866786610] [2023-12-20 11:45:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866786610] [2023-12-20 11:45:10,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866786610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:10,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:10,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935982069] [2023-12-20 11:45:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:10,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:10,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:10,667 INFO L87 Difference]: Start difference. First operand 10148 states and 16843 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:13,417 INFO L93 Difference]: Finished difference Result 33379 states and 54727 transitions. [2023-12-20 11:45:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:13,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:13,496 INFO L225 Difference]: With dead ends: 33379 [2023-12-20 11:45:13,497 INFO L226 Difference]: Without dead ends: 25366 [2023-12-20 11:45:13,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:13,531 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 5136 mSDsluCounter, 16647 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 20847 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 20847 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:45:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25366 states. [2023-12-20 11:45:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25366 to 17581. [2023-12-20 11:45:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17581 states, 16077 states have (on average 1.620451576786714) internal successors, (26052), 16144 states have internal predecessors, (26052), 1048 states have call successors, (1048), 391 states have call predecessors, (1048), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-20 11:45:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17581 states to 17581 states and 28939 transitions. [2023-12-20 11:45:14,254 INFO L78 Accepts]: Start accepts. Automaton has 17581 states and 28939 transitions. Word has length 122 [2023-12-20 11:45:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:14,254 INFO L495 AbstractCegarLoop]: Abstraction has 17581 states and 28939 transitions. [2023-12-20 11:45:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 17581 states and 28939 transitions. [2023-12-20 11:45:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:14,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:14,263 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] [2023-12-20 11:45:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:45:14,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash -850347651, now seen corresponding path program 1 times [2023-12-20 11:45:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461223827] [2023-12-20 11:45:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461223827] [2023-12-20 11:45:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461223827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483378938] [2023-12-20 11:45:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:14,399 INFO L87 Difference]: Start difference. First operand 17581 states and 28939 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:17,622 INFO L93 Difference]: Finished difference Result 62074 states and 101957 transitions. [2023-12-20 11:45:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:17,723 INFO L225 Difference]: With dead ends: 62074 [2023-12-20 11:45:17,724 INFO L226 Difference]: Without dead ends: 46628 [2023-12-20 11:45:17,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:17,755 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5235 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:17,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5259 Valid, 21337 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:45:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46628 states. [2023-12-20 11:45:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46628 to 32766. [2023-12-20 11:45:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32766 states, 29854 states have (on average 1.603202250954646) internal successors, (47862), 29985 states have internal predecessors, (47862), 2008 states have call successors, (2008), 775 states have call predecessors, (2008), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-20 11:45:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32766 states to 32766 states and 54191 transitions. [2023-12-20 11:45:19,109 INFO L78 Accepts]: Start accepts. Automaton has 32766 states and 54191 transitions. Word has length 122 [2023-12-20 11:45:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:19,110 INFO L495 AbstractCegarLoop]: Abstraction has 32766 states and 54191 transitions. [2023-12-20 11:45:19,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 32766 states and 54191 transitions. [2023-12-20 11:45:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:19,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:19,126 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] [2023-12-20 11:45:19,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:45:19,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:19,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1825644731, now seen corresponding path program 1 times [2023-12-20 11:45:19,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:19,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670057002] [2023-12-20 11:45:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:19,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:19,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670057002] [2023-12-20 11:45:19,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670057002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:19,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:19,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896826700] [2023-12-20 11:45:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:19,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:19,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:19,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:19,259 INFO L87 Difference]: Start difference. First operand 32766 states and 54191 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:23,454 INFO L93 Difference]: Finished difference Result 117735 states and 195799 transitions. [2023-12-20 11:45:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:23,679 INFO L225 Difference]: With dead ends: 117735 [2023-12-20 11:45:23,679 INFO L226 Difference]: Without dead ends: 87104 [2023-12-20 11:45:23,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:23,737 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5044 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:23,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 21337 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:45:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87104 states. [2023-12-20 11:45:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87104 to 63264. [2023-12-20 11:45:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63264 states, 57600 states have (on average 1.5948958333333334) internal successors, (91866), 57859 states have internal predecessors, (91866), 3864 states have call successors, (3864), 1543 states have call predecessors, (3864), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-20 11:45:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63264 states to 63264 states and 106409 transitions. [2023-12-20 11:45:26,324 INFO L78 Accepts]: Start accepts. Automaton has 63264 states and 106409 transitions. Word has length 122 [2023-12-20 11:45:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:26,325 INFO L495 AbstractCegarLoop]: Abstraction has 63264 states and 106409 transitions. [2023-12-20 11:45:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 63264 states and 106409 transitions. [2023-12-20 11:45:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:26,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:26,356 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] [2023-12-20 11:45:26,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:45:26,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:26,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1797144441, now seen corresponding path program 1 times [2023-12-20 11:45:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445753016] [2023-12-20 11:45:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:26,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445753016] [2023-12-20 11:45:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445753016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706631557] [2023-12-20 11:45:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:26,482 INFO L87 Difference]: Start difference. First operand 63264 states and 106409 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:32,100 INFO L93 Difference]: Finished difference Result 228935 states and 388815 transitions. [2023-12-20 11:45:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:32,793 INFO L225 Difference]: With dead ends: 228935 [2023-12-20 11:45:32,793 INFO L226 Difference]: Without dead ends: 167806 [2023-12-20 11:45:33,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:33,154 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5124 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:33,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 21337 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:45:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167806 states. [2023-12-20 11:45:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167806 to 124257. [2023-12-20 11:45:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124257 states, 113217 states have (on average 1.5909624879655881) internal successors, (180124), 113732 states have internal predecessors, (180124), 7448 states have call successors, (7448), 3079 states have call predecessors, (7448), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-20 11:45:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124257 states to 124257 states and 215213 transitions. [2023-12-20 11:45:38,868 INFO L78 Accepts]: Start accepts. Automaton has 124257 states and 215213 transitions. Word has length 122 [2023-12-20 11:45:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:38,868 INFO L495 AbstractCegarLoop]: Abstraction has 124257 states and 215213 transitions. [2023-12-20 11:45:38,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 124257 states and 215213 transitions. [2023-12-20 11:45:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:45:38,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:38,939 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] [2023-12-20 11:45:38,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:45:38,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:38,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash -143437573, now seen corresponding path program 1 times [2023-12-20 11:45:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918085408] [2023-12-20 11:45:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:45:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:45:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:45:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:45:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:39,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:39,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918085408] [2023-12-20 11:45:39,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918085408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:39,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:39,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:39,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811046484] [2023-12-20 11:45:39,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:39,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:39,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:39,074 INFO L87 Difference]: Start difference. First operand 124257 states and 215213 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:45:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:48,982 INFO L93 Difference]: Finished difference Result 447494 states and 785685 transitions. [2023-12-20 11:45:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:48,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:45:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:50,788 INFO L225 Difference]: With dead ends: 447494 [2023-12-20 11:45:50,788 INFO L226 Difference]: Without dead ends: 325372 [2023-12-20 11:45:51,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:51,169 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5024 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:51,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5038 Valid, 21337 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:45:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325372 states. [2023-12-20 11:46:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325372 to 246242. [2023-12-20 11:46:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246242 states, 224706 states have (on average 1.5894101626124804) internal successors, (357150), 225733 states have internal predecessors, (357150), 14360 states have call successors, (14360), 6151 states have call predecessors, (14360), 7174 states have return successors, (74431), 15381 states have call predecessors, (74431), 14358 states have call successors, (74431) [2023-12-20 11:46:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246242 states to 246242 states and 445941 transitions. [2023-12-20 11:46:03,417 INFO L78 Accepts]: Start accepts. Automaton has 246242 states and 445941 transitions. Word has length 122 [2023-12-20 11:46:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:46:03,417 INFO L495 AbstractCegarLoop]: Abstraction has 246242 states and 445941 transitions. [2023-12-20 11:46:03,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:46:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 246242 states and 445941 transitions. [2023-12-20 11:46:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:46:03,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:46:03,547 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] [2023-12-20 11:46:03,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:46:03,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:46:03,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:46:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1733625657, now seen corresponding path program 1 times [2023-12-20 11:46:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:46:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903373659] [2023-12-20 11:46:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:46:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:46:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:46:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:46:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:46:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:46:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:46:03,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:46:03,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903373659] [2023-12-20 11:46:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903373659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:46:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:46:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:46:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898815788] [2023-12-20 11:46:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:46:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:46:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:46:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:46:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:03,691 INFO L87 Difference]: Start difference. First operand 246242 states and 445941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:46:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:21,784 INFO L93 Difference]: Finished difference Result 876933 states and 1618603 transitions. [2023-12-20 11:46:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:46:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-12-20 11:46:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:24,943 INFO L225 Difference]: With dead ends: 876933 [2023-12-20 11:46:24,944 INFO L226 Difference]: Without dead ends: 632826 [2023-12-20 11:46:25,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:46:25,864 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5052 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:25,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 21337 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 11:46:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632826 states.