/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:06:22,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:06:23,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:06:23,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:06:23,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:06:23,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:06:23,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:06:23,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:06:23,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:06:23,053 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:06:23,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:06:23,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:06:23,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:06:23,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:06:23,055 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:06:23,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:06:23,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:06:23,056 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:06:23,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:06:23,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:06:23,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:06:23,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:06:23,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:06:23,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:06:23,058 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:06:23,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:06:23,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:06:23,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:06:23,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:06:23,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:06:23,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:06:23,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:06:23,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:06:23,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:06:23,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:06:23,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:06:23,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:06:23,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:06:23,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:06:23,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:06:23,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:06:23,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:06:23,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:06:23,066 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:06:23,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:06:23,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:06:23,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:06:23,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:06:23,373 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:06:23,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2023-12-16 01:06:24,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:06:24,784 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:06:24,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2023-12-16 01:06:24,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5a1f377/5b23c6716c534f9a8e810744bf0c5719/FLAG08503b614 [2023-12-16 01:06:24,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5a1f377/5b23c6716c534f9a8e810744bf0c5719 [2023-12-16 01:06:24,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:06:24,820 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:06:24,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:06:24,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:06:24,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:06:24,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:06:24" (1/1) ... [2023-12-16 01:06:24,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9e25c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:24, skipping insertion in model container [2023-12-16 01:06:24,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:06:24" (1/1) ... [2023-12-16 01:06:24,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:06:25,028 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.05.cil-2.c[913,926] [2023-12-16 01:06:25,069 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.05.cil-2.c[5977,5990] [2023-12-16 01:06:25,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:06:25,135 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:06:25,154 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.05.cil-2.c[913,926] [2023-12-16 01:06:25,173 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.05.cil-2.c[5977,5990] [2023-12-16 01:06:25,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:06:25,238 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:06:25,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25 WrapperNode [2023-12-16 01:06:25,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:06:25,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:06:25,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:06:25,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:06:25,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,308 INFO L138 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 669 [2023-12-16 01:06:25,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:06:25,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:06:25,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:06:25,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:06:25,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,328 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,346 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 01:06:25,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:06:25,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:06:25,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:06:25,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:06:25,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (1/1) ... [2023-12-16 01:06:25,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:06:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:25,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 01:06:25,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 01:06:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:06:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 01:06:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 01:06:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-16 01:06:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-16 01:06:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 01:06:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 01:06:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 01:06:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 01:06:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 01:06:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 01:06:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 01:06:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 01:06:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 01:06:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 01:06:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:06:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 01:06:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 01:06:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:06:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:06:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 01:06:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 01:06:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 01:06:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 01:06:25,604 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:06:25,609 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:06:26,255 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:06:26,306 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:06:26,306 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-16 01:06:26,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:06:26 BoogieIcfgContainer [2023-12-16 01:06:26,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:06:26,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:06:26,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:06:26,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:06:26,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:06:24" (1/3) ... [2023-12-16 01:06:26,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aa676e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:06:26, skipping insertion in model container [2023-12-16 01:06:26,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:06:25" (2/3) ... [2023-12-16 01:06:26,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aa676e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:06:26, skipping insertion in model container [2023-12-16 01:06:26,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:06:26" (3/3) ... [2023-12-16 01:06:26,314 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2023-12-16 01:06:26,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:06:26,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:06:26,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:06:26,408 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;@11533a99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:06:26,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:06:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 218 states have (on average 1.6972477064220184) internal successors, (370), 225 states have internal predecessors, (370), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 01:06:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 01:06:26,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:26,427 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] [2023-12-16 01:06:26,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:26,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1842572142, now seen corresponding path program 1 times [2023-12-16 01:06:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:26,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560918610] [2023-12-16 01:06:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560918610] [2023-12-16 01:06:26,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560918610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:26,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:26,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231007772] [2023-12-16 01:06:26,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:26,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:26,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:26,838 INFO L87 Difference]: Start difference. First operand has 258 states, 218 states have (on average 1.6972477064220184) internal successors, (370), 225 states have internal predecessors, (370), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) 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) [2023-12-16 01:06:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:27,319 INFO L93 Difference]: Finished difference Result 563 states and 926 transitions. [2023-12-16 01:06:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:27,322 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 [2023-12-16 01:06:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:27,332 INFO L225 Difference]: With dead ends: 563 [2023-12-16 01:06:27,332 INFO L226 Difference]: Without dead ends: 315 [2023-12-16 01:06:27,336 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 [2023-12-16 01:06:27,339 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 500 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:27,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 486 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:06:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-16 01:06:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 309. [2023-12-16 01:06:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 270 states have internal predecessors, (409), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2023-12-16 01:06:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 473 transitions. [2023-12-16 01:06:27,396 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 473 transitions. Word has length 37 [2023-12-16 01:06:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:27,396 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 473 transitions. [2023-12-16 01:06:27,397 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) [2023-12-16 01:06:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 473 transitions. [2023-12-16 01:06:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 01:06:27,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:27,399 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] [2023-12-16 01:06:27,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:06:27,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:27,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash -425398402, now seen corresponding path program 1 times [2023-12-16 01:06:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235587048] [2023-12-16 01:06:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 01:06:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:27,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235587048] [2023-12-16 01:06:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235587048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:27,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381813873] [2023-12-16 01:06:27,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:27,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:27,498 INFO L87 Difference]: Start difference. First operand 309 states and 473 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) [2023-12-16 01:06:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:27,834 INFO L93 Difference]: Finished difference Result 543 states and 817 transitions. [2023-12-16 01:06:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:27,835 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 [2023-12-16 01:06:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:27,843 INFO L225 Difference]: With dead ends: 543 [2023-12-16 01:06:27,843 INFO L226 Difference]: Without dead ends: 432 [2023-12-16 01:06:27,845 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 [2023-12-16 01:06:27,846 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 513 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:27,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 479 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:06:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-16 01:06:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 409. [2023-12-16 01:06:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 352 states have (on average 1.4971590909090908) internal successors, (527), 358 states have internal predecessors, (527), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (47), 35 states have call predecessors, (47), 35 states have call successors, (47) [2023-12-16 01:06:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 613 transitions. [2023-12-16 01:06:27,899 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 613 transitions. Word has length 38 [2023-12-16 01:06:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:27,899 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 613 transitions. [2023-12-16 01:06:27,900 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) [2023-12-16 01:06:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 613 transitions. [2023-12-16 01:06:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 01:06:27,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:27,908 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] [2023-12-16 01:06:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:06:27,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:27,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash 522643096, now seen corresponding path program 1 times [2023-12-16 01:06:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:27,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517815931] [2023-12-16 01:06:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-16 01:06:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517815931] [2023-12-16 01:06:27,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517815931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:27,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:27,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901719983] [2023-12-16 01:06:27,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:27,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:27,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:27,996 INFO L87 Difference]: Start difference. First operand 409 states and 613 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) [2023-12-16 01:06:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:28,356 INFO L93 Difference]: Finished difference Result 829 states and 1194 transitions. [2023-12-16 01:06:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:28,357 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 [2023-12-16 01:06:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:28,360 INFO L225 Difference]: With dead ends: 829 [2023-12-16 01:06:28,360 INFO L226 Difference]: Without dead ends: 618 [2023-12-16 01:06:28,361 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 [2023-12-16 01:06:28,362 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 214 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:28,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 661 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:06:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-16 01:06:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 514. [2023-12-16 01:06:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 445 states have (on average 1.4741573033707864) internal successors, (656), 453 states have internal predecessors, (656), 45 states have call successors, (45), 22 states have call predecessors, (45), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2023-12-16 01:06:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 754 transitions. [2023-12-16 01:06:28,391 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 754 transitions. Word has length 39 [2023-12-16 01:06:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:28,392 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 754 transitions. [2023-12-16 01:06:28,392 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) [2023-12-16 01:06:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 754 transitions. [2023-12-16 01:06:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 01:06:28,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:28,394 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] [2023-12-16 01:06:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:06:28,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1026612791, now seen corresponding path program 1 times [2023-12-16 01:06:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213074434] [2023-12-16 01:06:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-16 01:06:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:06:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:06:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213074434] [2023-12-16 01:06:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213074434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122505054] [2023-12-16 01:06:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:28,474 INFO L87 Difference]: Start difference. First operand 514 states and 754 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) [2023-12-16 01:06:28,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:28,802 INFO L93 Difference]: Finished difference Result 1030 states and 1471 transitions. [2023-12-16 01:06:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:28,803 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 [2023-12-16 01:06:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:28,807 INFO L225 Difference]: With dead ends: 1030 [2023-12-16 01:06:28,808 INFO L226 Difference]: Without dead ends: 714 [2023-12-16 01:06:28,810 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 [2023-12-16 01:06:28,816 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 199 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:28,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 708 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:06:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-12-16 01:06:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 680. [2023-12-16 01:06:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 587 states have (on average 1.4173764906303237) internal successors, (832), 597 states have internal predecessors, (832), 59 states have call successors, (59), 30 states have call predecessors, (59), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2023-12-16 01:06:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 968 transitions. [2023-12-16 01:06:28,860 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 968 transitions. Word has length 54 [2023-12-16 01:06:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:28,862 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 968 transitions. [2023-12-16 01:06:28,862 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) [2023-12-16 01:06:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 968 transitions. [2023-12-16 01:06:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:06:28,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:28,864 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] [2023-12-16 01:06:28,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:06:28,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:28,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash -169003874, now seen corresponding path program 1 times [2023-12-16 01:06:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233896265] [2023-12-16 01:06:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:06:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:06:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 01:06:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233896265] [2023-12-16 01:06:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233896265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:28,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785661693] [2023-12-16 01:06:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:28,956 INFO L87 Difference]: Start difference. First operand 680 states and 968 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) [2023-12-16 01:06:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:29,217 INFO L93 Difference]: Finished difference Result 1259 states and 1747 transitions. [2023-12-16 01:06:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:29,218 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 [2023-12-16 01:06:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:29,222 INFO L225 Difference]: With dead ends: 1259 [2023-12-16 01:06:29,222 INFO L226 Difference]: Without dead ends: 857 [2023-12-16 01:06:29,223 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 [2023-12-16 01:06:29,224 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 499 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:29,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 491 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:06:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-16 01:06:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 808. [2023-12-16 01:06:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 699 states have (on average 1.3834048640915593) internal successors, (967), 711 states have internal predecessors, (967), 67 states have call successors, (67), 36 states have call predecessors, (67), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2023-12-16 01:06:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1125 transitions. [2023-12-16 01:06:29,259 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1125 transitions. Word has length 59 [2023-12-16 01:06:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:29,260 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1125 transitions. [2023-12-16 01:06:29,260 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) [2023-12-16 01:06:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1125 transitions. [2023-12-16 01:06:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 01:06:29,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:29,262 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] [2023-12-16 01:06:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:06:29,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:29,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 208415176, now seen corresponding path program 1 times [2023-12-16 01:06:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460213758] [2023-12-16 01:06:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:06:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:06:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460213758] [2023-12-16 01:06:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460213758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:29,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:29,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:06:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787650352] [2023-12-16 01:06:29,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:06:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:06:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:06:29,345 INFO L87 Difference]: Start difference. First operand 808 states and 1125 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) [2023-12-16 01:06:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:29,707 INFO L93 Difference]: Finished difference Result 1294 states and 1787 transitions. [2023-12-16 01:06:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:06:29,708 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 [2023-12-16 01:06:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:29,711 INFO L225 Difference]: With dead ends: 1294 [2023-12-16 01:06:29,712 INFO L226 Difference]: Without dead ends: 756 [2023-12-16 01:06:29,713 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 [2023-12-16 01:06:29,713 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 151 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:29,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 853 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:06:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-16 01:06:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 683. [2023-12-16 01:06:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 591 states have (on average 1.3874788494077834) internal successors, (820), 602 states have internal predecessors, (820), 57 states have call successors, (57), 30 states have call predecessors, (57), 33 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-16 01:06:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 950 transitions. [2023-12-16 01:06:29,741 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 950 transitions. Word has length 60 [2023-12-16 01:06:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:29,742 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 950 transitions. [2023-12-16 01:06:29,742 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) [2023-12-16 01:06:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 950 transitions. [2023-12-16 01:06:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 01:06:29,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:29,745 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] [2023-12-16 01:06:29,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:06:29,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:29,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2006054792, now seen corresponding path program 1 times [2023-12-16 01:06:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247982356] [2023-12-16 01:06:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:06:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:06:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247982356] [2023-12-16 01:06:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247982356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191724322] [2023-12-16 01:06:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:29,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:29,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:06:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:06:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:29,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 01:06:29,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:06:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:30,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:06:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:06:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191724322] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:30,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 01:06:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-16 01:06:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405992749] [2023-12-16 01:06:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:30,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:30,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:30,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:30,087 INFO L87 Difference]: Start difference. First operand 683 states and 950 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) [2023-12-16 01:06:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:30,226 INFO L93 Difference]: Finished difference Result 732 states and 1011 transitions. [2023-12-16 01:06:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:06:30,226 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 [2023-12-16 01:06:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:30,230 INFO L225 Difference]: With dead ends: 732 [2023-12-16 01:06:30,230 INFO L226 Difference]: Without dead ends: 729 [2023-12-16 01:06:30,230 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 [2023-12-16 01:06:30,231 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 682 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:30,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 431 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:06:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-16 01:06:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 682. [2023-12-16 01:06:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 591 states have (on average 1.3840947546531304) internal successors, (818), 601 states have internal predecessors, (818), 56 states have call successors, (56), 30 states have call predecessors, (56), 33 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-16 01:06:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 947 transitions. [2023-12-16 01:06:30,263 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 947 transitions. Word has length 60 [2023-12-16 01:06:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:30,264 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 947 transitions. [2023-12-16 01:06:30,264 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) [2023-12-16 01:06:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 947 transitions. [2023-12-16 01:06:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 01:06:30,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:30,266 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] [2023-12-16 01:06:30,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:06:30,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:30,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:30,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2057243361, now seen corresponding path program 1 times [2023-12-16 01:06:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342701485] [2023-12-16 01:06:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:06:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:06:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342701485] [2023-12-16 01:06:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342701485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022926781] [2023-12-16 01:06:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:30,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:30,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:06:30,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:06:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:30,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 01:06:30,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:06:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:30,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:06:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:06:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022926781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:06:30,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:06:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-16 01:06:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319650168] [2023-12-16 01:06:30,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:06:30,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:06:30,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:06:30,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:06:30,968 INFO L87 Difference]: Start difference. First operand 682 states and 947 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) [2023-12-16 01:06:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:31,885 INFO L93 Difference]: Finished difference Result 1918 states and 2599 transitions. [2023-12-16 01:06:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 01:06:31,886 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 [2023-12-16 01:06:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:31,891 INFO L225 Difference]: With dead ends: 1918 [2023-12-16 01:06:31,891 INFO L226 Difference]: Without dead ends: 1520 [2023-12-16 01:06:31,893 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 [2023-12-16 01:06:31,894 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 687 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 2011 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:06:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2023-12-16 01:06:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1011. [2023-12-16 01:06:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 883 states have (on average 1.349943374858437) internal successors, (1192), 900 states have internal predecessors, (1192), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (104), 68 states have call predecessors, (104), 72 states have call successors, (104) [2023-12-16 01:06:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1371 transitions. [2023-12-16 01:06:31,955 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1371 transitions. Word has length 61 [2023-12-16 01:06:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:31,955 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1371 transitions. [2023-12-16 01:06:31,955 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) [2023-12-16 01:06:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1371 transitions. [2023-12-16 01:06:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:06:31,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:31,958 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] [2023-12-16 01:06:31,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:06:32,163 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,SelfDestructingSolverStorable7 [2023-12-16 01:06:32,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:32,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash -401503642, now seen corresponding path program 1 times [2023-12-16 01:06:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:32,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701300528] [2023-12-16 01:06:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:06:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-16 01:06:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:06:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701300528] [2023-12-16 01:06:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701300528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:32,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:32,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:06:32,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703393952] [2023-12-16 01:06:32,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:06:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:06:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:06:32,215 INFO L87 Difference]: Start difference. First operand 1011 states and 1371 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) [2023-12-16 01:06:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:32,476 INFO L93 Difference]: Finished difference Result 1645 states and 2194 transitions. [2023-12-16 01:06:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:06:32,476 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 [2023-12-16 01:06:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:32,480 INFO L225 Difference]: With dead ends: 1645 [2023-12-16 01:06:32,480 INFO L226 Difference]: Without dead ends: 980 [2023-12-16 01:06:32,481 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 [2023-12-16 01:06:32,482 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 512 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:32,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 507 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:06:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-12-16 01:06:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 903. [2023-12-16 01:06:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 788 states have (on average 1.350253807106599) internal successors, (1064), 805 states have internal predecessors, (1064), 68 states have call successors, (68), 38 states have call predecessors, (68), 45 states have return successors, (93), 60 states have call predecessors, (93), 65 states have call successors, (93) [2023-12-16 01:06:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1225 transitions. [2023-12-16 01:06:32,540 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1225 transitions. Word has length 78 [2023-12-16 01:06:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:32,540 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1225 transitions. [2023-12-16 01:06:32,540 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) [2023-12-16 01:06:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1225 transitions. [2023-12-16 01:06:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:32,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:32,543 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] [2023-12-16 01:06:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:06:32,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:32,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash -43566558, now seen corresponding path program 1 times [2023-12-16 01:06:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242393190] [2023-12-16 01:06:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:06:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:06:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 01:06:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 01:06:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 01:06:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 01:06:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242393190] [2023-12-16 01:06:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242393190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758265567] [2023-12-16 01:06:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:32,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:32,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:06:32,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:06:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:32,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:06:32,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:06:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:06:32,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:06:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758265567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:32,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:06:32,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 01:06:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763370765] [2023-12-16 01:06:32,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:32,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:06:32,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:06:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:06:32,749 INFO L87 Difference]: Start difference. First operand 903 states and 1225 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) [2023-12-16 01:06:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:32,825 INFO L93 Difference]: Finished difference Result 1188 states and 1583 transitions. [2023-12-16 01:06:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:06:32,825 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 [2023-12-16 01:06:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:32,827 INFO L225 Difference]: With dead ends: 1188 [2023-12-16 01:06:32,827 INFO L226 Difference]: Without dead ends: 193 [2023-12-16 01:06:32,829 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 [2023-12-16 01:06:32,829 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 55 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:32,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 728 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:06:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-16 01:06:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-12-16 01:06:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 165 states have (on average 1.6) internal successors, (264), 167 states have internal predecessors, (264), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-16 01:06:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 304 transitions. [2023-12-16 01:06:32,839 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 304 transitions. Word has length 92 [2023-12-16 01:06:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:32,839 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 304 transitions. [2023-12-16 01:06:32,840 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) [2023-12-16 01:06:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 304 transitions. [2023-12-16 01:06:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:32,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:32,841 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] [2023-12-16 01:06:32,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:06:33,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:33,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:33,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1427183430, now seen corresponding path program 1 times [2023-12-16 01:06:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593379949] [2023-12-16 01:06:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593379949] [2023-12-16 01:06:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593379949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279227005] [2023-12-16 01:06:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:33,214 INFO L87 Difference]: Start difference. First operand 193 states and 304 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:34,982 INFO L93 Difference]: Finished difference Result 691 states and 1121 transitions. [2023-12-16 01:06:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:06:34,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:34,986 INFO L225 Difference]: With dead ends: 691 [2023-12-16 01:06:34,986 INFO L226 Difference]: Without dead ends: 510 [2023-12-16 01:06:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:06:34,987 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 694 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:34,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1163 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 01:06:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-16 01:06:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 381. [2023-12-16 01:06:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 329 states have (on average 1.6109422492401215) internal successors, (530), 333 states have internal predecessors, (530), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 35 states have call successors, (42) [2023-12-16 01:06:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 609 transitions. [2023-12-16 01:06:35,012 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 609 transitions. Word has length 92 [2023-12-16 01:06:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:35,012 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 609 transitions. [2023-12-16 01:06:35,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 609 transitions. [2023-12-16 01:06:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:35,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:35,014 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] [2023-12-16 01:06:35,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:06:35,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:35,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1454249032, now seen corresponding path program 1 times [2023-12-16 01:06:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395258252] [2023-12-16 01:06:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395258252] [2023-12-16 01:06:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395258252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:35,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547303171] [2023-12-16 01:06:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:35,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:35,140 INFO L87 Difference]: Start difference. First operand 381 states and 609 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:36,701 INFO L93 Difference]: Finished difference Result 1319 states and 2136 transitions. [2023-12-16 01:06:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:06:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:36,707 INFO L225 Difference]: With dead ends: 1319 [2023-12-16 01:06:36,707 INFO L226 Difference]: Without dead ends: 952 [2023-12-16 01:06:36,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:06:36,709 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 698 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:36,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1082 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:06:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-16 01:06:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 725. [2023-12-16 01:06:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 631 states have (on average 1.6022187004754358) internal successors, (1011), 637 states have internal predecessors, (1011), 65 states have call successors, (65), 25 states have call predecessors, (65), 28 states have return successors, (80), 66 states have call predecessors, (80), 63 states have call successors, (80) [2023-12-16 01:06:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1156 transitions. [2023-12-16 01:06:36,755 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1156 transitions. Word has length 92 [2023-12-16 01:06:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:36,756 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1156 transitions. [2023-12-16 01:06:36,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1156 transitions. [2023-12-16 01:06:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:36,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:36,758 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] [2023-12-16 01:06:36,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:06:36,758 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:36,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -623087866, now seen corresponding path program 1 times [2023-12-16 01:06:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459758874] [2023-12-16 01:06:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:36,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:36,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459758874] [2023-12-16 01:06:36,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459758874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:36,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:36,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636238228] [2023-12-16 01:06:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:36,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:36,910 INFO L87 Difference]: Start difference. First operand 725 states and 1156 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:37,707 INFO L93 Difference]: Finished difference Result 1666 states and 2702 transitions. [2023-12-16 01:06:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:06:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:37,714 INFO L225 Difference]: With dead ends: 1666 [2023-12-16 01:06:37,714 INFO L226 Difference]: Without dead ends: 953 [2023-12-16 01:06:37,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:06:37,718 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 539 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:37,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 582 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:06:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2023-12-16 01:06:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 725. [2023-12-16 01:06:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 631 states have (on average 1.5942947702060222) internal successors, (1006), 637 states have internal predecessors, (1006), 65 states have call successors, (65), 25 states have call predecessors, (65), 28 states have return successors, (80), 66 states have call predecessors, (80), 63 states have call successors, (80) [2023-12-16 01:06:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1151 transitions. [2023-12-16 01:06:37,804 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1151 transitions. Word has length 92 [2023-12-16 01:06:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:37,804 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1151 transitions. [2023-12-16 01:06:37,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1151 transitions. [2023-12-16 01:06:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:37,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:37,806 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] [2023-12-16 01:06:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:06:37,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:37,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1111016584, now seen corresponding path program 1 times [2023-12-16 01:06:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:37,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722085225] [2023-12-16 01:06:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:37,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722085225] [2023-12-16 01:06:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722085225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:37,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286265703] [2023-12-16 01:06:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:37,951 INFO L87 Difference]: Start difference. First operand 725 states and 1151 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:38,746 INFO L93 Difference]: Finished difference Result 1662 states and 2681 transitions. [2023-12-16 01:06:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:06:38,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:38,752 INFO L225 Difference]: With dead ends: 1662 [2023-12-16 01:06:38,752 INFO L226 Difference]: Without dead ends: 949 [2023-12-16 01:06:38,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:06:38,755 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 612 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:38,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 486 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:06:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-16 01:06:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 725. [2023-12-16 01:06:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 631 states have (on average 1.5863708399366085) internal successors, (1001), 637 states have internal predecessors, (1001), 65 states have call successors, (65), 25 states have call predecessors, (65), 28 states have return successors, (80), 66 states have call predecessors, (80), 63 states have call successors, (80) [2023-12-16 01:06:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1146 transitions. [2023-12-16 01:06:38,809 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1146 transitions. Word has length 92 [2023-12-16 01:06:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:38,809 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1146 transitions. [2023-12-16 01:06:38,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1146 transitions. [2023-12-16 01:06:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:38,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:38,816 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] [2023-12-16 01:06:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:06:38,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:38,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1998239430, now seen corresponding path program 1 times [2023-12-16 01:06:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696602893] [2023-12-16 01:06:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696602893] [2023-12-16 01:06:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696602893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694672454] [2023-12-16 01:06:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:38,949 INFO L87 Difference]: Start difference. First operand 725 states and 1146 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:39,722 INFO L93 Difference]: Finished difference Result 1657 states and 2658 transitions. [2023-12-16 01:06:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:06:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:39,727 INFO L225 Difference]: With dead ends: 1657 [2023-12-16 01:06:39,727 INFO L226 Difference]: Without dead ends: 944 [2023-12-16 01:06:39,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:06:39,731 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 610 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:39,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 486 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:06:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-16 01:06:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 725. [2023-12-16 01:06:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 631 states have (on average 1.578446909667195) internal successors, (996), 637 states have internal predecessors, (996), 65 states have call successors, (65), 25 states have call predecessors, (65), 28 states have return successors, (80), 66 states have call predecessors, (80), 63 states have call successors, (80) [2023-12-16 01:06:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1141 transitions. [2023-12-16 01:06:39,781 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1141 transitions. Word has length 92 [2023-12-16 01:06:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:39,781 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1141 transitions. [2023-12-16 01:06:39,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1141 transitions. [2023-12-16 01:06:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:39,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:39,783 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] [2023-12-16 01:06:39,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:06:39,783 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:39,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash 87196872, now seen corresponding path program 1 times [2023-12-16 01:06:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817656128] [2023-12-16 01:06:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:39,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:39,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817656128] [2023-12-16 01:06:39,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817656128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:39,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:39,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365615492] [2023-12-16 01:06:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:39,930 INFO L87 Difference]: Start difference. First operand 725 states and 1141 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:41,555 INFO L93 Difference]: Finished difference Result 2800 states and 4451 transitions. [2023-12-16 01:06:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:06:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:41,567 INFO L225 Difference]: With dead ends: 2800 [2023-12-16 01:06:41,567 INFO L226 Difference]: Without dead ends: 2089 [2023-12-16 01:06:41,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:06:41,570 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 880 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:41,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1078 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:06:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2023-12-16 01:06:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1416. [2023-12-16 01:06:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1242 states have (on average 1.5724637681159421) internal successors, (1953), 1252 states have internal predecessors, (1953), 117 states have call successors, (117), 49 states have call predecessors, (117), 56 states have return successors, (158), 122 states have call predecessors, (158), 115 states have call successors, (158) [2023-12-16 01:06:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2228 transitions. [2023-12-16 01:06:41,662 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2228 transitions. Word has length 92 [2023-12-16 01:06:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:41,663 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2228 transitions. [2023-12-16 01:06:41,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2228 transitions. [2023-12-16 01:06:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:41,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:41,665 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] [2023-12-16 01:06:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:06:41,665 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:41,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 164097670, now seen corresponding path program 1 times [2023-12-16 01:06:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598351698] [2023-12-16 01:06:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598351698] [2023-12-16 01:06:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598351698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673491490] [2023-12-16 01:06:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:41,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:41,821 INFO L87 Difference]: Start difference. First operand 1416 states and 2228 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:43,481 INFO L93 Difference]: Finished difference Result 5403 states and 8594 transitions. [2023-12-16 01:06:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:06:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:43,506 INFO L225 Difference]: With dead ends: 5403 [2023-12-16 01:06:43,507 INFO L226 Difference]: Without dead ends: 4001 [2023-12-16 01:06:43,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:06:43,514 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 739 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:43,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1108 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:06:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2023-12-16 01:06:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2717. [2023-12-16 01:06:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2387 states have (on average 1.5622119815668203) internal successors, (3729), 2405 states have internal predecessors, (3729), 217 states have call successors, (217), 97 states have call predecessors, (217), 112 states have return successors, (328), 230 states have call predecessors, (328), 215 states have call successors, (328) [2023-12-16 01:06:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4274 transitions. [2023-12-16 01:06:43,693 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4274 transitions. Word has length 92 [2023-12-16 01:06:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:43,693 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 4274 transitions. [2023-12-16 01:06:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4274 transitions. [2023-12-16 01:06:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:43,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:43,697 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] [2023-12-16 01:06:43,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:06:43,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:43,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -803252984, now seen corresponding path program 1 times [2023-12-16 01:06:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627150518] [2023-12-16 01:06:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:43,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:43,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627150518] [2023-12-16 01:06:43,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627150518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:43,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:43,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319182471] [2023-12-16 01:06:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:43,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:43,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:43,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:43,829 INFO L87 Difference]: Start difference. First operand 2717 states and 4274 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:45,602 INFO L93 Difference]: Finished difference Result 10050 states and 15996 transitions. [2023-12-16 01:06:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:06:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:45,646 INFO L225 Difference]: With dead ends: 10050 [2023-12-16 01:06:45,646 INFO L226 Difference]: Without dead ends: 7347 [2023-12-16 01:06:45,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:06:45,656 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 724 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:45,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1118 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:06:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2023-12-16 01:06:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 5414. [2023-12-16 01:06:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 4780 states have (on average 1.5629707112970712) internal successors, (7471), 4814 states have internal predecessors, (7471), 409 states have call successors, (409), 193 states have call predecessors, (409), 224 states have return successors, (714), 438 states have call predecessors, (714), 407 states have call successors, (714) [2023-12-16 01:06:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8594 transitions. [2023-12-16 01:06:45,998 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8594 transitions. Word has length 92 [2023-12-16 01:06:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:45,998 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8594 transitions. [2023-12-16 01:06:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8594 transitions. [2023-12-16 01:06:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:46,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:46,004 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] [2023-12-16 01:06:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:06:46,004 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:46,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1295879158, now seen corresponding path program 1 times [2023-12-16 01:06:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608879930] [2023-12-16 01:06:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608879930] [2023-12-16 01:06:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608879930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:46,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300722711] [2023-12-16 01:06:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:46,152 INFO L87 Difference]: Start difference. First operand 5414 states and 8594 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:48,043 INFO L93 Difference]: Finished difference Result 19549 states and 31358 transitions. [2023-12-16 01:06:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:06:48,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:48,109 INFO L225 Difference]: With dead ends: 19549 [2023-12-16 01:06:48,110 INFO L226 Difference]: Without dead ends: 14149 [2023-12-16 01:06:48,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:06:48,133 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 756 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:48,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1118 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:06:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14149 states. [2023-12-16 01:06:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14149 to 10808. [2023-12-16 01:06:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10808 states, 9582 states have (on average 1.5640784804842414) internal successors, (14987), 9648 states have internal predecessors, (14987), 777 states have call successors, (777), 385 states have call predecessors, (777), 448 states have return successors, (1632), 838 states have call predecessors, (1632), 775 states have call successors, (1632) [2023-12-16 01:06:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10808 states to 10808 states and 17396 transitions. [2023-12-16 01:06:48,918 INFO L78 Accepts]: Start accepts. Automaton has 10808 states and 17396 transitions. Word has length 92 [2023-12-16 01:06:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:48,918 INFO L495 AbstractCegarLoop]: Abstraction has 10808 states and 17396 transitions. [2023-12-16 01:06:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10808 states and 17396 transitions. [2023-12-16 01:06:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:48,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:48,929 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] [2023-12-16 01:06:48,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:06:48,930 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:48,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash -341939000, now seen corresponding path program 1 times [2023-12-16 01:06:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5382787] [2023-12-16 01:06:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:48,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5382787] [2023-12-16 01:06:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5382787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160674795] [2023-12-16 01:06:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:49,056 INFO L87 Difference]: Start difference. First operand 10808 states and 17396 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:50,152 INFO L93 Difference]: Finished difference Result 24193 states and 39587 transitions. [2023-12-16 01:06:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:06:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:50,203 INFO L225 Difference]: With dead ends: 24193 [2023-12-16 01:06:50,204 INFO L226 Difference]: Without dead ends: 13397 [2023-12-16 01:06:50,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:06:50,236 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 536 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:50,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 581 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:06:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13397 states. [2023-12-16 01:06:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13397 to 10808. [2023-12-16 01:06:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10808 states, 9582 states have (on average 1.5572949279899813) internal successors, (14922), 9648 states have internal predecessors, (14922), 777 states have call successors, (777), 385 states have call predecessors, (777), 448 states have return successors, (1632), 838 states have call predecessors, (1632), 775 states have call successors, (1632) [2023-12-16 01:06:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10808 states to 10808 states and 17331 transitions. [2023-12-16 01:06:50,963 INFO L78 Accepts]: Start accepts. Automaton has 10808 states and 17331 transitions. Word has length 92 [2023-12-16 01:06:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:50,964 INFO L495 AbstractCegarLoop]: Abstraction has 10808 states and 17331 transitions. [2023-12-16 01:06:50,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 10808 states and 17331 transitions. [2023-12-16 01:06:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:06:50,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:50,974 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] [2023-12-16 01:06:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:06:50,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:50,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1558092726, now seen corresponding path program 1 times [2023-12-16 01:06:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686179123] [2023-12-16 01:06:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:06:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686179123] [2023-12-16 01:06:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686179123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:51,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:06:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:06:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126096966] [2023-12-16 01:06:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:51,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:06:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:06:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:51,081 INFO L87 Difference]: Start difference. First operand 10808 states and 17331 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:53,309 INFO L93 Difference]: Finished difference Result 32304 states and 51758 transitions. [2023-12-16 01:06:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 01:06:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 01:06:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:53,400 INFO L225 Difference]: With dead ends: 32304 [2023-12-16 01:06:53,401 INFO L226 Difference]: Without dead ends: 21510 [2023-12-16 01:06:53,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-16 01:06:53,433 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 794 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:53,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 776 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:06:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21510 states. [2023-12-16 01:06:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21510 to 16235. [2023-12-16 01:06:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 14384 states have (on average 1.5401140155728588) internal successors, (22153), 14514 states have internal predecessors, (22153), 1178 states have call successors, (1178), 577 states have call predecessors, (1178), 672 states have return successors, (2307), 1207 states have call predecessors, (2307), 1176 states have call successors, (2307) [2023-12-16 01:06:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 25638 transitions. [2023-12-16 01:06:54,310 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 25638 transitions. Word has length 92 [2023-12-16 01:06:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:54,310 INFO L495 AbstractCegarLoop]: Abstraction has 16235 states and 25638 transitions. [2023-12-16 01:06:54,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:06:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 25638 transitions. [2023-12-16 01:06:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 01:06:54,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:54,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:06:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 01:06:54,349 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:54,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1775951093, now seen corresponding path program 1 times [2023-12-16 01:06:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339402402] [2023-12-16 01:06:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 01:06:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 01:06:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 01:06:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:06:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339402402] [2023-12-16 01:06:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339402402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269524414] [2023-12-16 01:06:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:54,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:06:54,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 01:06:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:54,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:06:54,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:06:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:06:54,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:06:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269524414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:54,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:06:54,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 01:06:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723342296] [2023-12-16 01:06:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:54,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:06:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:54,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:06:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:54,720 INFO L87 Difference]: Start difference. First operand 16235 states and 25638 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:06:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:06:56,514 INFO L93 Difference]: Finished difference Result 48387 states and 76912 transitions. [2023-12-16 01:06:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:06:56,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 01:06:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:06:56,643 INFO L225 Difference]: With dead ends: 48387 [2023-12-16 01:06:56,643 INFO L226 Difference]: Without dead ends: 32166 [2023-12-16 01:06:56,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:56,680 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 251 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:06:56,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 523 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:06:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32166 states. [2023-12-16 01:06:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32166 to 32066. [2023-12-16 01:06:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32066 states, 28421 states have (on average 1.5363639562295486) internal successors, (43665), 28679 states have internal predecessors, (43665), 2300 states have call successors, (2300), 1153 states have call predecessors, (2300), 1344 states have return successors, (4495), 2297 states have call predecessors, (4495), 2298 states have call successors, (4495) [2023-12-16 01:06:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32066 states to 32066 states and 50460 transitions. [2023-12-16 01:06:58,355 INFO L78 Accepts]: Start accepts. Automaton has 32066 states and 50460 transitions. Word has length 148 [2023-12-16 01:06:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:06:58,355 INFO L495 AbstractCegarLoop]: Abstraction has 32066 states and 50460 transitions. [2023-12-16 01:06:58,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:06:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 32066 states and 50460 transitions. [2023-12-16 01:06:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 01:06:58,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:06:58,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:06:58,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 01:06:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:58,630 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:06:58,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:06:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 21187955, now seen corresponding path program 1 times [2023-12-16 01:06:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:06:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352088481] [2023-12-16 01:06:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:06:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:06:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:06:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:06:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:06:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:06:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 01:06:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 01:06:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 01:06:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 01:06:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:06:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352088481] [2023-12-16 01:06:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352088481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:06:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050566886] [2023-12-16 01:06:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:06:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:06:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:06:58,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:06:58,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 01:06:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:06:58,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:06:58,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:06:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 01:06:58,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:06:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050566886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:06:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:06:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 01:06:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370561396] [2023-12-16 01:06:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:06:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:06:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:06:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:06:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:06:58,961 INFO L87 Difference]: Start difference. First operand 32066 states and 50460 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:07:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:01,941 INFO L93 Difference]: Finished difference Result 95400 states and 151060 transitions. [2023-12-16 01:07:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:07:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 01:07:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:02,235 INFO L225 Difference]: With dead ends: 95400 [2023-12-16 01:07:02,236 INFO L226 Difference]: Without dead ends: 63348 [2023-12-16 01:07:02,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:02,314 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 241 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:02,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 523 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:07:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63348 states. [2023-12-16 01:07:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63348 to 63152. [2023-12-16 01:07:05,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63152 states, 56063 states have (on average 1.5334355992365731) internal successors, (85969), 56577 states have internal predecessors, (85969), 4400 states have call successors, (4400), 2305 states have call predecessors, (4400), 2688 states have return successors, (8727), 4333 states have call predecessors, (8727), 4398 states have call successors, (8727) [2023-12-16 01:07:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63152 states to 63152 states and 99096 transitions. [2023-12-16 01:07:05,813 INFO L78 Accepts]: Start accepts. Automaton has 63152 states and 99096 transitions. Word has length 148 [2023-12-16 01:07:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:05,813 INFO L495 AbstractCegarLoop]: Abstraction has 63152 states and 99096 transitions. [2023-12-16 01:07:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:07:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 63152 states and 99096 transitions. [2023-12-16 01:07:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 01:07:05,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:05,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:05,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 01:07:06,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-16 01:07:06,116 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:06,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 682140529, now seen corresponding path program 1 times [2023-12-16 01:07:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153287240] [2023-12-16 01:07:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 01:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 01:07:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 01:07:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:07:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 01:07:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 01:07:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 01:07:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 01:07:06,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:06,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153287240] [2023-12-16 01:07:06,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153287240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:07:06,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314318816] [2023-12-16 01:07:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:06,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:07:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:07:06,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:07:06,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 01:07:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:06,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:07:06,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:07:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 01:07:06,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:07:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314318816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:06,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:07:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 01:07:06,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246950312] [2023-12-16 01:07:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:07:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:07:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:06,490 INFO L87 Difference]: Start difference. First operand 63152 states and 99096 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 01:07:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:11,658 INFO L93 Difference]: Finished difference Result 188274 states and 297340 transitions. [2023-12-16 01:07:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:07:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-16 01:07:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:12,330 INFO L225 Difference]: With dead ends: 188274 [2023-12-16 01:07:12,331 INFO L226 Difference]: Without dead ends: 125136 [2023-12-16 01:07:12,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:12,473 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 236 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:12,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 523 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:07:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125136 states. Received shutdown request... [2023-12-16 01:07:15,653 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:07:15,659 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:07:16,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 01:07:16,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 01:07:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125136 to 124748. [2023-12-16 01:07:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124748 states, 110771 states have (on average 1.5295068203771744) internal successors, (169425), 111797 states have internal predecessors, (169425), 8600 states have call successors, (8600), 4609 states have call predecessors, (8600), 5376 states have return successors, (17191), 8405 states have call predecessors, (17191), 8598 states have call successors, (17191) [2023-12-16 01:07:18,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 01:07:18,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 01:07:18,488 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 01:07:18,492 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 01:07:18,517 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] [2023-12-16 01:07:18,520 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:07:18,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:07:18 BoogieIcfgContainer [2023-12-16 01:07:18,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:07:18,522 INFO L158 Benchmark]: Toolchain (without parser) took 53702.32ms. Allocated memory was 381.7MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 334.7MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-16 01:07:18,522 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 220.2MB. Free memory is still 167.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:07:18,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.78ms. Allocated memory is still 381.7MB. Free memory was 334.2MB in the beginning and 314.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 01:07:18,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.23ms. Allocated memory is still 381.7MB. Free memory was 313.8MB in the beginning and 310.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 01:07:18,523 INFO L158 Benchmark]: Boogie Preprocessor took 83.85ms. Allocated memory is still 381.7MB. Free memory was 310.6MB in the beginning and 306.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 01:07:18,523 INFO L158 Benchmark]: RCFGBuilder took 913.31ms. Allocated memory is still 381.7MB. Free memory was 306.4MB in the beginning and 262.4MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-16 01:07:18,523 INFO L158 Benchmark]: TraceAbstraction took 52212.65ms. Allocated memory was 381.7MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 261.8MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 01:07:18,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 220.2MB. Free memory is still 167.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 418.78ms. Allocated memory is still 381.7MB. Free memory was 334.2MB in the beginning and 314.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.23ms. Allocated memory is still 381.7MB. Free memory was 313.8MB in the beginning and 310.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 83.85ms. Allocated memory is still 381.7MB. Free memory was 310.6MB in the beginning and 306.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 913.31ms. Allocated memory is still 381.7MB. Free memory was 306.4MB in the beginning and 262.4MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 52212.65ms. Allocated memory was 381.7MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 261.8MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.7GB. 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 ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 258 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 52.1s, OverallIterations: 24, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 31.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12583 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12322 mSDsluCounter, 18502 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12499 mSDsCounter, 1101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19696 IncrementalHoareTripleChecker+Invalid, 20797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1101 mSolverCounterUnsat, 6003 mSDtfsCounter, 19696 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1271 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63152occurred in iteration=23, InterpolantAutomatonStates: 214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 24 MinimizatonAttempts, 17340 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2691 NumberOfCodeBlocks, 2691 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2780 ConstructedInterpolants, 0 QuantifiedInterpolants, 6062 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2959 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 32 InterpolantComputations, 23 PerfectInterpolantSequences, 398/529 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