/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:05:27,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:05:27,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:05:27,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:05:27,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:05:27,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:05:27,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:05:27,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:05:27,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:05:27,640 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:05:27,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:05:27,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:05:27,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:05:27,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:05:27,642 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:05:27,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:05:27,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:05:27,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:05:27,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:05:27,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:05:27,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:05:27,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:05:27,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:05:27,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:05:27,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:05:27,645 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:05:27,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:05:27,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:05:27,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:05:27,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:05:27,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:05:27,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:05:27,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:05:27,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:05:27,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:05:27,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:05:27,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:05:27,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:05:27,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:05:27,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:05:27,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:05:27,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:05:27,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:05:27,902 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:05:27,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-15 18:05:28,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:05:29,203 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:05:29,204 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-15 18:05:29,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76b7bbec/d1d3f8d3920745afb49348347ab59ab2/FLAG8e61b6975 [2023-12-15 18:05:29,230 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76b7bbec/d1d3f8d3920745afb49348347ab59ab2 [2023-12-15 18:05:29,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:05:29,233 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:05:29,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:05:29,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:05:29,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:05:29,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689e4ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29, skipping insertion in model container [2023-12-15 18:05:29,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:05:29,467 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2023-12-15 18:05:29,521 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2023-12-15 18:05:29,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:05:29,654 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:05:29,663 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2023-12-15 18:05:29,674 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2023-12-15 18:05:29,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:05:29,754 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:05:29,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29 WrapperNode [2023-12-15 18:05:29,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:05:29,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:05:29,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:05:29,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:05:29,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,832 INFO L138 Inliner]: procedures = 74, calls = 87, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1143 [2023-12-15 18:05:29,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:05:29,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:05:29,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:05:29,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:05:29,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,870 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:05:29,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:05:29,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:05:29,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:05:29,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:05:29,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (1/1) ... [2023-12-15 18:05:29,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:05:29,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:29,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:05:29,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:05:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:05:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:05:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:05:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:05:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:05:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:05:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:05:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:05:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:05:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:05:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:05:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:05:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:05:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:05:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:05:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:05:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:05:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:05:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:05:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:05:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:05:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:05:30,130 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:05:30,133 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:05:30,992 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:05:31,065 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:05:31,066 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-15 18:05:31,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:05:31 BoogieIcfgContainer [2023-12-15 18:05:31,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:05:31,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:05:31,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:05:31,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:05:31,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:05:29" (1/3) ... [2023-12-15 18:05:31,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dac0228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:05:31, skipping insertion in model container [2023-12-15 18:05:31,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:29" (2/3) ... [2023-12-15 18:05:31,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dac0228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:05:31, skipping insertion in model container [2023-12-15 18:05:31,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:05:31" (3/3) ... [2023-12-15 18:05:31,074 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-15 18:05:31,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:05:31,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:05:31,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:05:31,153 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;@270b2791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:05:31,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:05:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 389 states have (on average 1.7275064267352185) internal successors, (672), 394 states have internal predecessors, (672), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 18:05:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:05:31,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:31,168 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] [2023-12-15 18:05:31,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:31,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash -995552835, now seen corresponding path program 1 times [2023-12-15 18:05:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11330668] [2023-12-15 18:05:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11330668] [2023-12-15 18:05:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11330668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:31,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563196717] [2023-12-15 18:05:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:31,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:31,515 INFO L87 Difference]: Start difference. First operand has 434 states, 389 states have (on average 1.7275064267352185) internal successors, (672), 394 states have internal predecessors, (672), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:05:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:32,322 INFO L93 Difference]: Finished difference Result 853 states and 1444 transitions. [2023-12-15 18:05:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-15 18:05:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:32,345 INFO L225 Difference]: With dead ends: 853 [2023-12-15 18:05:32,345 INFO L226 Difference]: Without dead ends: 437 [2023-12-15 18:05:32,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:32,356 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 381 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:32,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 942 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:05:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-15 18:05:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 429. [2023-12-15 18:05:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 386 states have (on average 1.616580310880829) internal successors, (624), 389 states have internal predecessors, (624), 33 states have call successors, (33), 9 states have call predecessors, (33), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 18:05:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 688 transitions. [2023-12-15 18:05:32,435 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 688 transitions. Word has length 37 [2023-12-15 18:05:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:32,436 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 688 transitions. [2023-12-15 18:05:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:05:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 688 transitions. [2023-12-15 18:05:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:05:32,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:32,438 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] [2023-12-15 18:05:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:05:32,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:32,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1248430463, now seen corresponding path program 1 times [2023-12-15 18:05:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601868010] [2023-12-15 18:05:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:32,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601868010] [2023-12-15 18:05:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601868010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:32,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418037409] [2023-12-15 18:05:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:32,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:32,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:32,555 INFO L87 Difference]: Start difference. First operand 429 states and 688 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:33,049 INFO L93 Difference]: Finished difference Result 548 states and 860 transitions. [2023-12-15 18:05:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-15 18:05:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:33,053 INFO L225 Difference]: With dead ends: 548 [2023-12-15 18:05:33,053 INFO L226 Difference]: Without dead ends: 492 [2023-12-15 18:05:33,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:33,055 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 937 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:33,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 723 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-15 18:05:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 486. [2023-12-15 18:05:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 436 states have (on average 1.5894495412844036) internal successors, (693), 440 states have internal predecessors, (693), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-12-15 18:05:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 771 transitions. [2023-12-15 18:05:33,098 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 771 transitions. Word has length 37 [2023-12-15 18:05:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:33,098 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 771 transitions. [2023-12-15 18:05:33,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 771 transitions. [2023-12-15 18:05:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:05:33,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:33,105 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] [2023-12-15 18:05:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:05:33,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:33,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -987178231, now seen corresponding path program 1 times [2023-12-15 18:05:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:33,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993373305] [2023-12-15 18:05:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:33,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993373305] [2023-12-15 18:05:33,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993373305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:33,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809859905] [2023-12-15 18:05:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:33,206 INFO L87 Difference]: Start difference. First operand 486 states and 771 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:33,700 INFO L93 Difference]: Finished difference Result 720 states and 1115 transitions. [2023-12-15 18:05:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-15 18:05:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:33,705 INFO L225 Difference]: With dead ends: 720 [2023-12-15 18:05:33,706 INFO L226 Difference]: Without dead ends: 609 [2023-12-15 18:05:33,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:33,709 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 955 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:33,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 730 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-15 18:05:33,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 586. [2023-12-15 18:05:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 523 states have (on average 1.5506692160611855) internal successors, (811), 528 states have internal predecessors, (811), 45 states have call successors, (45), 15 states have call predecessors, (45), 16 states have return successors, (55), 43 states have call predecessors, (55), 43 states have call successors, (55) [2023-12-15 18:05:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 911 transitions. [2023-12-15 18:05:33,740 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 911 transitions. Word has length 38 [2023-12-15 18:05:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:33,740 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 911 transitions. [2023-12-15 18:05:33,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 911 transitions. [2023-12-15 18:05:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:05:33,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:33,741 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] [2023-12-15 18:05:33,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:05:33,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:33,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2057625110, now seen corresponding path program 1 times [2023-12-15 18:05:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:33,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093087618] [2023-12-15 18:05:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:05:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:33,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:33,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093087618] [2023-12-15 18:05:33,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093087618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:33,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:33,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752478669] [2023-12-15 18:05:33,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:33,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:33,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:33,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:33,804 INFO L87 Difference]: Start difference. First operand 586 states and 911 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:34,378 INFO L93 Difference]: Finished difference Result 1006 states and 1492 transitions. [2023-12-15 18:05:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-15 18:05:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:34,384 INFO L225 Difference]: With dead ends: 1006 [2023-12-15 18:05:34,384 INFO L226 Difference]: Without dead ends: 795 [2023-12-15 18:05:34,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:34,390 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 364 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:34,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1037 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:05:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-15 18:05:34,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 691. [2023-12-15 18:05:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 616 states have (on average 1.525974025974026) internal successors, (940), 623 states have internal predecessors, (940), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-15 18:05:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1052 transitions. [2023-12-15 18:05:34,446 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1052 transitions. Word has length 39 [2023-12-15 18:05:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:34,446 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1052 transitions. [2023-12-15 18:05:34,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:05:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1052 transitions. [2023-12-15 18:05:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:05:34,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:34,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:34,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:05:34,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:34,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash -961012926, now seen corresponding path program 1 times [2023-12-15 18:05:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:34,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083247537] [2023-12-15 18:05:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:05:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:05:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083247537] [2023-12-15 18:05:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083247537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790612225] [2023-12-15 18:05:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:34,526 INFO L87 Difference]: Start difference. First operand 691 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:05:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:35,146 INFO L93 Difference]: Finished difference Result 996 states and 1474 transitions. [2023-12-15 18:05:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:35,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-15 18:05:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:35,151 INFO L225 Difference]: With dead ends: 996 [2023-12-15 18:05:35,151 INFO L226 Difference]: Without dead ends: 785 [2023-12-15 18:05:35,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:35,152 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 349 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:35,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1082 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:05:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-15 18:05:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 751. [2023-12-15 18:05:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 667 states have (on average 1.5007496251874064) internal successors, (1001), 675 states have internal predecessors, (1001), 56 states have call successors, (56), 24 states have call predecessors, (56), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-15 18:05:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1127 transitions. [2023-12-15 18:05:35,189 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1127 transitions. Word has length 54 [2023-12-15 18:05:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:35,191 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1127 transitions. [2023-12-15 18:05:35,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:05:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1127 transitions. [2023-12-15 18:05:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:05:35,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:35,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:05:35,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:35,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -691278202, now seen corresponding path program 1 times [2023-12-15 18:05:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386729796] [2023-12-15 18:05:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:05:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:05:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:05:35,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386729796] [2023-12-15 18:05:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386729796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:35,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:35,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:35,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758750443] [2023-12-15 18:05:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:35,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:35,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:35,261 INFO L87 Difference]: Start difference. First operand 751 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:05:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:35,763 INFO L93 Difference]: Finished difference Result 1240 states and 1787 transitions. [2023-12-15 18:05:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-15 18:05:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:35,768 INFO L225 Difference]: With dead ends: 1240 [2023-12-15 18:05:35,769 INFO L226 Difference]: Without dead ends: 905 [2023-12-15 18:05:35,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:35,770 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 941 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:35,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 742 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-15 18:05:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 856. [2023-12-15 18:05:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 759 states have (on average 1.4677206851119895) internal successors, (1114), 768 states have internal predecessors, (1114), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-15 18:05:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1258 transitions. [2023-12-15 18:05:35,809 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1258 transitions. Word has length 59 [2023-12-15 18:05:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:35,810 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1258 transitions. [2023-12-15 18:05:35,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:05:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1258 transitions. [2023-12-15 18:05:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:05:35,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:35,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:35,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:05:35,812 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:35,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash -286134322, now seen corresponding path program 1 times [2023-12-15 18:05:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857329645] [2023-12-15 18:05:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:35,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857329645] [2023-12-15 18:05:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857329645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:05:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318649402] [2023-12-15 18:05:35,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:35,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:05:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:05:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:35,932 INFO L87 Difference]: Start difference. First operand 856 states and 1258 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:05:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:36,662 INFO L93 Difference]: Finished difference Result 1328 states and 1904 transitions. [2023-12-15 18:05:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-15 18:05:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:36,667 INFO L225 Difference]: With dead ends: 1328 [2023-12-15 18:05:36,667 INFO L226 Difference]: Without dead ends: 933 [2023-12-15 18:05:36,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:36,670 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 302 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:36,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1352 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:05:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-15 18:05:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 860. [2023-12-15 18:05:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 762 states have (on average 1.4514435695538057) internal successors, (1106), 772 states have internal predecessors, (1106), 63 states have call successors, (63), 29 states have call predecessors, (63), 33 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-15 18:05:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1250 transitions. [2023-12-15 18:05:36,704 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1250 transitions. Word has length 60 [2023-12-15 18:05:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:36,705 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1250 transitions. [2023-12-15 18:05:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:05:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1250 transitions. [2023-12-15 18:05:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:05:36,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:36,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:05:36,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:36,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1511505294, now seen corresponding path program 1 times [2023-12-15 18:05:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804179802] [2023-12-15 18:05:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:36,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:05:36,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804179802] [2023-12-15 18:05:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804179802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156241124] [2023-12-15 18:05:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:36,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:36,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:36,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:36,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:05:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:05:36,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:37,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:05:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156241124] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:37,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:05:37,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:05:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348752814] [2023-12-15 18:05:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:37,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:37,073 INFO L87 Difference]: Start difference. First operand 860 states and 1250 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:05:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:37,278 INFO L93 Difference]: Finished difference Result 909 states and 1311 transitions. [2023-12-15 18:05:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:05:37,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-15 18:05:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:37,284 INFO L225 Difference]: With dead ends: 909 [2023-12-15 18:05:37,284 INFO L226 Difference]: Without dead ends: 906 [2023-12-15 18:05:37,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:05:37,286 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1254 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:37,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 707 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:05:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-15 18:05:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 859. [2023-12-15 18:05:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 762 states have (on average 1.4488188976377954) internal successors, (1104), 771 states have internal predecessors, (1104), 62 states have call successors, (62), 29 states have call predecessors, (62), 33 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-15 18:05:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1247 transitions. [2023-12-15 18:05:37,322 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1247 transitions. Word has length 60 [2023-12-15 18:05:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:37,322 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1247 transitions. [2023-12-15 18:05:37,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:05:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1247 transitions. [2023-12-15 18:05:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:05:37,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:37,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:37,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:37,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:37,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -389456119, now seen corresponding path program 1 times [2023-12-15 18:05:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489499170] [2023-12-15 18:05:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:37,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:05:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489499170] [2023-12-15 18:05:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489499170] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701188593] [2023-12-15 18:05:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:37,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:37,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:37,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:37,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:05:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:37,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:05:37,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:37,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:05:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:38,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701188593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:05:38,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:05:38,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:05:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056843531] [2023-12-15 18:05:38,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:05:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:05:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:05:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:05:38,016 INFO L87 Difference]: Start difference. First operand 859 states and 1247 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:05:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:39,444 INFO L93 Difference]: Finished difference Result 2095 states and 2899 transitions. [2023-12-15 18:05:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:05:39,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-15 18:05:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:39,452 INFO L225 Difference]: With dead ends: 2095 [2023-12-15 18:05:39,452 INFO L226 Difference]: Without dead ends: 1697 [2023-12-15 18:05:39,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:05:39,455 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1130 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:39,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2868 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:05:39,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-15 18:05:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1188. [2023-12-15 18:05:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1054 states have (on average 1.4022770398481974) internal successors, (1478), 1070 states have internal predecessors, (1478), 81 states have call successors, (81), 42 states have call predecessors, (81), 51 states have return successors, (112), 76 states have call predecessors, (112), 80 states have call successors, (112) [2023-12-15 18:05:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1671 transitions. [2023-12-15 18:05:39,529 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1671 transitions. Word has length 61 [2023-12-15 18:05:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:39,529 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1671 transitions. [2023-12-15 18:05:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:05:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1671 transitions. [2023-12-15 18:05:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:05:39,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:39,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:39,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:05:39,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-15 18:05:39,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:39,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash -855987006, now seen corresponding path program 1 times [2023-12-15 18:05:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793449804] [2023-12-15 18:05:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:05:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:05:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793449804] [2023-12-15 18:05:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793449804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:39,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:39,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614720936] [2023-12-15 18:05:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:39,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:39,814 INFO L87 Difference]: Start difference. First operand 1188 states and 1671 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:05:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:40,346 INFO L93 Difference]: Finished difference Result 1822 states and 2494 transitions. [2023-12-15 18:05:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:40,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-15 18:05:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:40,352 INFO L225 Difference]: With dead ends: 1822 [2023-12-15 18:05:40,352 INFO L226 Difference]: Without dead ends: 1157 [2023-12-15 18:05:40,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:40,354 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 955 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:40,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 759 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:05:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-15 18:05:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1080. [2023-12-15 18:05:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 959 states have (on average 1.407716371220021) internal successors, (1350), 975 states have internal predecessors, (1350), 74 states have call successors, (74), 37 states have call predecessors, (74), 45 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-15 18:05:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1525 transitions. [2023-12-15 18:05:40,402 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1525 transitions. Word has length 78 [2023-12-15 18:05:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:40,402 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1525 transitions. [2023-12-15 18:05:40,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:05:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1525 transitions. [2023-12-15 18:05:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:05:40,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:40,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:40,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:05:40,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:40,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash -147214036, now seen corresponding path program 1 times [2023-12-15 18:05:40,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044663418] [2023-12-15 18:05:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:05:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:05:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:05:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:05:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044663418] [2023-12-15 18:05:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044663418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5645529] [2023-12-15 18:05:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:40,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:40,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:40,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:40,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:05:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:05:40,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:05:40,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:40,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5645529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:40,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:40,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:05:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671437662] [2023-12-15 18:05:40,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:40,655 INFO L87 Difference]: Start difference. First operand 1080 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:05:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:40,755 INFO L93 Difference]: Finished difference Result 1365 states and 1883 transitions. [2023-12-15 18:05:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-15 18:05:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:40,757 INFO L225 Difference]: With dead ends: 1365 [2023-12-15 18:05:40,758 INFO L226 Difference]: Without dead ends: 370 [2023-12-15 18:05:40,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:40,760 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 55 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:40,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1280 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:05:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-15 18:05:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-12-15 18:05:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 336 states have (on average 1.6369047619047619) internal successors, (550), 337 states have internal predecessors, (550), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:05:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 604 transitions. [2023-12-15 18:05:40,774 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 604 transitions. Word has length 92 [2023-12-15 18:05:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:40,774 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 604 transitions. [2023-12-15 18:05:40,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:05:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 604 transitions. [2023-12-15 18:05:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:40,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:40,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:40,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:40,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:40,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:40,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1809885346, now seen corresponding path program 1 times [2023-12-15 18:05:40,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:40,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045436316] [2023-12-15 18:05:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:40,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045436316] [2023-12-15 18:05:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045436316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:41,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534952602] [2023-12-15 18:05:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:41,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:41,275 INFO L87 Difference]: Start difference. First operand 370 states and 604 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:43,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:43,987 INFO L93 Difference]: Finished difference Result 903 states and 1513 transitions. [2023-12-15 18:05:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:05:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:43,991 INFO L225 Difference]: With dead ends: 903 [2023-12-15 18:05:43,991 INFO L226 Difference]: Without dead ends: 540 [2023-12-15 18:05:43,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-15 18:05:43,993 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1164 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:43,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1201 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:05:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-15 18:05:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 372. [2023-12-15 18:05:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.6301775147928994) internal successors, (551), 339 states have internal predecessors, (551), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:05:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 605 transitions. [2023-12-15 18:05:44,033 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 605 transitions. Word has length 171 [2023-12-15 18:05:44,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:44,033 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 605 transitions. [2023-12-15 18:05:44,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 605 transitions. [2023-12-15 18:05:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:44,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:44,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:44,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:05:44,035 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:44,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1493898974, now seen corresponding path program 1 times [2023-12-15 18:05:44,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069826565] [2023-12-15 18:05:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:44,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069826565] [2023-12-15 18:05:44,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069826565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:44,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:44,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:05:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173920893] [2023-12-15 18:05:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:05:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:05:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:44,258 INFO L87 Difference]: Start difference. First operand 372 states and 605 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:45,929 INFO L93 Difference]: Finished difference Result 871 states and 1437 transitions. [2023-12-15 18:05:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:05:45,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:45,932 INFO L225 Difference]: With dead ends: 871 [2023-12-15 18:05:45,932 INFO L226 Difference]: Without dead ends: 514 [2023-12-15 18:05:45,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:05:45,934 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1037 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:45,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 661 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:05:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-15 18:05:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 372. [2023-12-15 18:05:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.6272189349112427) internal successors, (550), 339 states have internal predecessors, (550), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:05:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 604 transitions. [2023-12-15 18:05:45,952 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 604 transitions. Word has length 171 [2023-12-15 18:05:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:45,953 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 604 transitions. [2023-12-15 18:05:45,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 604 transitions. [2023-12-15 18:05:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:45,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:45,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:05:45,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1031596708, now seen corresponding path program 1 times [2023-12-15 18:05:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132062312] [2023-12-15 18:05:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132062312] [2023-12-15 18:05:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132062312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:46,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:05:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799323344] [2023-12-15 18:05:46,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:05:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:05:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:46,213 INFO L87 Difference]: Start difference. First operand 372 states and 604 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:49,223 INFO L93 Difference]: Finished difference Result 1381 states and 2292 transitions. [2023-12-15 18:05:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:05:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:49,229 INFO L225 Difference]: With dead ends: 1381 [2023-12-15 18:05:49,229 INFO L226 Difference]: Without dead ends: 1029 [2023-12-15 18:05:49,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:49,231 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1585 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:49,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1284 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:05:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-12-15 18:05:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 746. [2023-12-15 18:05:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 683 states have (on average 1.638360175695461) internal successors, (1119), 685 states have internal predecessors, (1119), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-15 18:05:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1220 transitions. [2023-12-15 18:05:49,274 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1220 transitions. Word has length 171 [2023-12-15 18:05:49,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:49,274 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1220 transitions. [2023-12-15 18:05:49,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1220 transitions. [2023-12-15 18:05:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:49,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:49,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:49,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:05:49,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:49,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 247752032, now seen corresponding path program 1 times [2023-12-15 18:05:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861919891] [2023-12-15 18:05:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:49,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:49,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:49,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861919891] [2023-12-15 18:05:49,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861919891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:49,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:49,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553559069] [2023-12-15 18:05:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:49,607 INFO L87 Difference]: Start difference. First operand 746 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:53,809 INFO L93 Difference]: Finished difference Result 2292 states and 3808 transitions. [2023-12-15 18:05:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:05:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:53,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:53,816 INFO L225 Difference]: With dead ends: 2292 [2023-12-15 18:05:53,816 INFO L226 Difference]: Without dead ends: 1566 [2023-12-15 18:05:53,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:05:53,819 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1636 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2127 Invalid, 4053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:05:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-12-15 18:05:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1091. [2023-12-15 18:05:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6316316316316317) internal successors, (1630), 1002 states have internal predecessors, (1630), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-15 18:05:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1777 transitions. [2023-12-15 18:05:53,873 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1777 transitions. Word has length 171 [2023-12-15 18:05:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:53,873 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1777 transitions. [2023-12-15 18:05:53,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1777 transitions. [2023-12-15 18:05:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:53,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:53,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:05:53,876 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:53,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash -16895458, now seen corresponding path program 1 times [2023-12-15 18:05:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:53,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280391466] [2023-12-15 18:05:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280391466] [2023-12-15 18:05:54,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280391466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:54,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:54,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580787133] [2023-12-15 18:05:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:54,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:54,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:54,174 INFO L87 Difference]: Start difference. First operand 1091 states and 1777 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:56,212 INFO L93 Difference]: Finished difference Result 2657 states and 4411 transitions. [2023-12-15 18:05:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:56,219 INFO L225 Difference]: With dead ends: 2657 [2023-12-15 18:05:56,219 INFO L226 Difference]: Without dead ends: 1586 [2023-12-15 18:05:56,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:56,222 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1158 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:56,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1095 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:05:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-15 18:05:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1091. [2023-12-15 18:05:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6286286286286287) internal successors, (1627), 1002 states have internal predecessors, (1627), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-15 18:05:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1774 transitions. [2023-12-15 18:05:56,277 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1774 transitions. Word has length 171 [2023-12-15 18:05:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:56,277 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1774 transitions. [2023-12-15 18:05:56,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1774 transitions. [2023-12-15 18:05:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:56,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:56,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:56,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:05:56,279 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:56,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1340074404, now seen corresponding path program 1 times [2023-12-15 18:05:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860852827] [2023-12-15 18:05:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860852827] [2023-12-15 18:05:56,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860852827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:56,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:56,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:56,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703415459] [2023-12-15 18:05:56,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:56,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:56,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:56,527 INFO L87 Difference]: Start difference. First operand 1091 states and 1774 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:58,530 INFO L93 Difference]: Finished difference Result 2653 states and 4394 transitions. [2023-12-15 18:05:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:05:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:58,540 INFO L225 Difference]: With dead ends: 2653 [2023-12-15 18:05:58,541 INFO L226 Difference]: Without dead ends: 1582 [2023-12-15 18:05:58,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:58,544 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1156 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:58,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1095 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:05:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-12-15 18:05:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1091. [2023-12-15 18:05:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6256256256256256) internal successors, (1624), 1002 states have internal predecessors, (1624), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-15 18:05:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1771 transitions. [2023-12-15 18:05:58,606 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1771 transitions. Word has length 171 [2023-12-15 18:05:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:58,606 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1771 transitions. [2023-12-15 18:05:58,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1771 transitions. [2023-12-15 18:05:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:05:58,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:58,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:05:58,608 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:58,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 556905054, now seen corresponding path program 1 times [2023-12-15 18:05:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732195890] [2023-12-15 18:05:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:05:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:05:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:05:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732195890] [2023-12-15 18:05:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732195890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:58,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481640754] [2023-12-15 18:05:58,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:58,853 INFO L87 Difference]: Start difference. First operand 1091 states and 1771 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:00,627 INFO L93 Difference]: Finished difference Result 2649 states and 4377 transitions. [2023-12-15 18:06:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:00,633 INFO L225 Difference]: With dead ends: 2649 [2023-12-15 18:06:00,633 INFO L226 Difference]: Without dead ends: 1578 [2023-12-15 18:06:00,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:00,636 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1317 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:00,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 922 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:06:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-15 18:06:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1091. [2023-12-15 18:06:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6226226226226226) internal successors, (1621), 1002 states have internal predecessors, (1621), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-15 18:06:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1768 transitions. [2023-12-15 18:06:00,694 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1768 transitions. Word has length 171 [2023-12-15 18:06:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:00,694 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1768 transitions. [2023-12-15 18:06:00,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1768 transitions. [2023-12-15 18:06:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:00,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:00,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:06:00,697 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:00,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash 895192604, now seen corresponding path program 1 times [2023-12-15 18:06:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268257402] [2023-12-15 18:06:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268257402] [2023-12-15 18:06:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268257402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121325510] [2023-12-15 18:06:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:00,944 INFO L87 Difference]: Start difference. First operand 1091 states and 1768 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:04,863 INFO L93 Difference]: Finished difference Result 3615 states and 5949 transitions. [2023-12-15 18:06:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:04,872 INFO L225 Difference]: With dead ends: 3615 [2023-12-15 18:06:04,872 INFO L226 Difference]: Without dead ends: 2544 [2023-12-15 18:06:04,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:04,878 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1607 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:04,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 2125 Invalid, 3966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:06:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2023-12-15 18:06:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1794. [2023-12-15 18:06:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1644 states have (on average 1.6155717761557178) internal successors, (2656), 1649 states have internal predecessors, (2656), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-15 18:06:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2899 transitions. [2023-12-15 18:06:05,011 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2899 transitions. Word has length 171 [2023-12-15 18:06:05,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:05,011 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2899 transitions. [2023-12-15 18:06:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2899 transitions. [2023-12-15 18:06:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:05,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:05,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:05,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:06:05,015 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:05,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1321747102, now seen corresponding path program 1 times [2023-12-15 18:06:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146997006] [2023-12-15 18:06:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146997006] [2023-12-15 18:06:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146997006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:05,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715250414] [2023-12-15 18:06:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:05,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:05,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:05,255 INFO L87 Difference]: Start difference. First operand 1794 states and 2899 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:07,269 INFO L93 Difference]: Finished difference Result 4305 states and 7068 transitions. [2023-12-15 18:06:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:07,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:07,280 INFO L225 Difference]: With dead ends: 4305 [2023-12-15 18:06:07,280 INFO L226 Difference]: Without dead ends: 2531 [2023-12-15 18:06:07,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:07,285 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1153 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:07,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1095 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:06:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-12-15 18:06:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1794. [2023-12-15 18:06:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1644 states have (on average 1.612530413625304) internal successors, (2651), 1649 states have internal predecessors, (2651), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-15 18:06:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2894 transitions. [2023-12-15 18:06:07,390 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2894 transitions. Word has length 171 [2023-12-15 18:06:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:07,390 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2894 transitions. [2023-12-15 18:06:07,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2894 transitions. [2023-12-15 18:06:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:07,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:07,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:06:07,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:07,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 781317596, now seen corresponding path program 1 times [2023-12-15 18:06:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927496741] [2023-12-15 18:06:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927496741] [2023-12-15 18:06:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927496741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:07,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:07,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999701595] [2023-12-15 18:06:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:07,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:07,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:07,658 INFO L87 Difference]: Start difference. First operand 1794 states and 2894 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:11,476 INFO L93 Difference]: Finished difference Result 6176 states and 10096 transitions. [2023-12-15 18:06:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:11,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:11,496 INFO L225 Difference]: With dead ends: 6176 [2023-12-15 18:06:11,496 INFO L226 Difference]: Without dead ends: 4402 [2023-12-15 18:06:11,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:11,502 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1599 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3863 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:11,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2125 Invalid, 3928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3863 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:06:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2023-12-15 18:06:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 3200. [2023-12-15 18:06:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2934 states have (on average 1.6056578050443082) internal successors, (4711), 2943 states have internal predecessors, (4711), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-15 18:06:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5152 transitions. [2023-12-15 18:06:11,678 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5152 transitions. Word has length 171 [2023-12-15 18:06:11,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:11,679 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5152 transitions. [2023-12-15 18:06:11,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5152 transitions. [2023-12-15 18:06:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:11,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:11,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:06:11,682 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:11,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash 625337054, now seen corresponding path program 1 times [2023-12-15 18:06:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:11,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745545286] [2023-12-15 18:06:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745545286] [2023-12-15 18:06:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745545286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964590551] [2023-12-15 18:06:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:11,969 INFO L87 Difference]: Start difference. First operand 3200 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:15,983 INFO L93 Difference]: Finished difference Result 11304 states and 18444 transitions. [2023-12-15 18:06:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:15,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:16,024 INFO L225 Difference]: With dead ends: 11304 [2023-12-15 18:06:16,024 INFO L226 Difference]: Without dead ends: 8124 [2023-12-15 18:06:16,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:16,034 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1604 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:16,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 2125 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:06:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2023-12-15 18:06:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 6017. [2023-12-15 18:06:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.6011958688168146) internal successors, (8837), 5536 states have internal predecessors, (8837), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-15 18:06:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9692 transitions. [2023-12-15 18:06:16,410 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9692 transitions. Word has length 171 [2023-12-15 18:06:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:16,410 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9692 transitions. [2023-12-15 18:06:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9692 transitions. [2023-12-15 18:06:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:16,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:16,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:16,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:06:16,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:16,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1035947420, now seen corresponding path program 1 times [2023-12-15 18:06:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:16,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041754349] [2023-12-15 18:06:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:16,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:16,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041754349] [2023-12-15 18:06:16,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041754349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:16,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:16,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174131002] [2023-12-15 18:06:16,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:16,661 INFO L87 Difference]: Start difference. First operand 6017 states and 9692 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:18,761 INFO L93 Difference]: Finished difference Result 14195 states and 23201 transitions. [2023-12-15 18:06:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:18,782 INFO L225 Difference]: With dead ends: 14195 [2023-12-15 18:06:18,783 INFO L226 Difference]: Without dead ends: 8198 [2023-12-15 18:06:18,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:18,796 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1157 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:18,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1095 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:06:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-12-15 18:06:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 6017. [2023-12-15 18:06:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.598115600652292) internal successors, (8820), 5536 states have internal predecessors, (8820), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-15 18:06:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9675 transitions. [2023-12-15 18:06:19,199 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9675 transitions. Word has length 171 [2023-12-15 18:06:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:19,199 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9675 transitions. [2023-12-15 18:06:19,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9675 transitions. [2023-12-15 18:06:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:19,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:19,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:06:19,210 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:19,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1099935782, now seen corresponding path program 1 times [2023-12-15 18:06:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:19,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882934664] [2023-12-15 18:06:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:06:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:06:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:06:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882934664] [2023-12-15 18:06:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882934664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315331245] [2023-12-15 18:06:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:19,472 INFO L87 Difference]: Start difference. First operand 6017 states and 9675 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:21,481 INFO L93 Difference]: Finished difference Result 14177 states and 23114 transitions. [2023-12-15 18:06:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:21,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-15 18:06:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:21,553 INFO L225 Difference]: With dead ends: 14177 [2023-12-15 18:06:21,553 INFO L226 Difference]: Without dead ends: 8180 [2023-12-15 18:06:21,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:21,566 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1155 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:21,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1095 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:06:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2023-12-15 18:06:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 6017. [2023-12-15 18:06:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.5950353324877695) internal successors, (8803), 5536 states have internal predecessors, (8803), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-15 18:06:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9658 transitions. [2023-12-15 18:06:21,906 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9658 transitions. Word has length 171 [2023-12-15 18:06:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:21,906 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9658 transitions. [2023-12-15 18:06:21,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9658 transitions. [2023-12-15 18:06:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 18:06:21,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:21,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:21,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:06:21,912 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:21,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1030287908, now seen corresponding path program 1 times [2023-12-15 18:06:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224865233] [2023-12-15 18:06:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:06:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-15 18:06:22,160 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:06:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:06:22,160 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 172 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. [2023-12-15 18:06:22,163 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:06:22,166 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:22,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:06:22,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:06:22 BoogieIcfgContainer [2023-12-15 18:06:22,175 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:06:22,176 INFO L158 Benchmark]: Toolchain (without parser) took 52943.22ms. Allocated memory was 300.9MB in the beginning and 656.4MB in the end (delta: 355.5MB). Free memory was 249.4MB in the beginning and 563.0MB in the end (delta: -313.6MB). Peak memory consumption was 42.4MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,176 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory was 138.6MB in the beginning and 138.5MB in the end (delta: 153.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:06:22,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.52ms. Allocated memory is still 300.9MB. Free memory was 249.0MB in the beginning and 221.1MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.50ms. Allocated memory is still 300.9MB. Free memory was 221.1MB in the beginning and 215.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,176 INFO L158 Benchmark]: Boogie Preprocessor took 70.35ms. Allocated memory is still 300.9MB. Free memory was 215.9MB in the beginning and 210.0MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,177 INFO L158 Benchmark]: RCFGBuilder took 1157.59ms. Allocated memory is still 300.9MB. Free memory was 210.0MB in the beginning and 210.8MB in the end (delta: -788.4kB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,179 INFO L158 Benchmark]: TraceAbstraction took 51106.70ms. Allocated memory was 300.9MB in the beginning and 656.4MB in the end (delta: 355.5MB). Free memory was 209.8MB in the beginning and 563.0MB in the end (delta: -353.2MB). Peak memory consumption was 1.7MB. Max. memory is 8.0GB. [2023-12-15 18:06:22,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 18:06:22,190 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory was 138.6MB in the beginning and 138.5MB in the end (delta: 153.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 521.52ms. Allocated memory is still 300.9MB. Free memory was 249.0MB in the beginning and 221.1MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.50ms. Allocated memory is still 300.9MB. Free memory was 221.1MB in the beginning and 215.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.35ms. Allocated memory is still 300.9MB. Free memory was 215.9MB in the beginning and 210.0MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1157.59ms. Allocated memory is still 300.9MB. Free memory was 210.0MB in the beginning and 210.8MB in the end (delta: -788.4kB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. * TraceAbstraction took 51106.70ms. Allocated memory was 300.9MB in the beginning and 656.4MB in the end (delta: 355.5MB). Free memory was 209.8MB in the beginning and 563.0MB in the end (delta: -353.2MB). Peak memory consumption was 1.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while NwaCegarLoop was analyzing trace of length 172 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was analyzing trace of length 172 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 434 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 51.0s, OverallIterations: 25, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25380 SdHoareTripleChecker+Valid, 31.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24951 mSDsluCounter, 30267 SdHoareTripleChecker+Invalid, 27.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20854 mSDsCounter, 1392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41149 IncrementalHoareTripleChecker+Invalid, 42541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1392 mSolverCounterUnsat, 9413 mSDtfsCounter, 41149 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 788 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6017occurred in iteration=22, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 12611 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3051 NumberOfCodeBlocks, 3051 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3143 ConstructedInterpolants, 0 QuantifiedInterpolants, 8147 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1234 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 207/271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown