/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:31:44,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:31:44,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:31:44,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:31:44,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:31:44,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:31:44,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:31:44,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:31:44,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:31:44,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:31:44,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:31:44,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:31:44,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:31:44,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:31:44,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:31:44,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:31:44,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:31:44,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:31:44,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:31:44,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:31:44,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:31:45,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:31:45,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:31:45,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:31:45,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:31:45,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:31:45,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:31:45,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:31:45,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:31:45,026 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:31:45,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:31:45,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:31:45,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:31:45,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:31:45,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:31:45,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:31:45,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:31:45,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:31:45,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:31:45,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:31:45,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:31:45,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:31:45,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:31:45,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:31:45,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:31:45,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:31:45,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:31:45,329 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:31:45,330 INFO L432 ainManager$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 [2022-01-10 02:31:45,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df2d9b2/21401065920745e3bda8eaee5167977f/FLAG4334346c4 [2022-01-10 02:31:45,761 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:31:45,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-10 02:31:45,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df2d9b2/21401065920745e3bda8eaee5167977f/FLAG4334346c4 [2022-01-10 02:31:45,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df2d9b2/21401065920745e3bda8eaee5167977f [2022-01-10 02:31:45,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:31:45,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:31:45,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:31:45,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:31:45,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:31:45,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:45" (1/1) ... [2022-01-10 02:31:45,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ff5a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:45, skipping insertion in model container [2022-01-10 02:31:45,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:45" (1/1) ... [2022-01-10 02:31:45,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:31:45,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:31:46,001 WARN L230 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] [2022-01-10 02:31:46,090 WARN L230 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] [2022-01-10 02:31:46,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:31:46,144 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:31:46,152 WARN L230 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] [2022-01-10 02:31:46,164 WARN L230 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] [2022-01-10 02:31:46,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:31:46,232 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:31:46,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46 WrapperNode [2022-01-10 02:31:46,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:31:46,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:31:46,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:31:46,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:31:46,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,275 INFO L137 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 654 [2022-01-10 02:31:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:31:46,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:31:46,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:31:46,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:31:46,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:31:46,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:31:46,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:31:46,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:31:46,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (1/1) ... [2022-01-10 02:31:46,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:31:46,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:31:46,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:31:46,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:31:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:31:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:31:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-01-10 02:31:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:31:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:31:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:31:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:31:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:31:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:31:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:31:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:31:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:31:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:31:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:31:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:31:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:31:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:31:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 02:31:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 02:31:46,442 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:31:46,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:31:46,911 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:31:46,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:31:46,917 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-10 02:31:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:46 BoogieIcfgContainer [2022-01-10 02:31:46,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:31:46,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:31:46,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:31:46,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:31:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:31:45" (1/3) ... [2022-01-10 02:31:46,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b5ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:46, skipping insertion in model container [2022-01-10 02:31:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:46" (2/3) ... [2022-01-10 02:31:46,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b5ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:46, skipping insertion in model container [2022-01-10 02:31:46,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:46" (3/3) ... [2022-01-10 02:31:46,926 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-10 02:31:46,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:31:46,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:31:46,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:31:46,982 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:31:46,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:31:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 247 states have (on average 1.6153846153846154) internal successors, (399), 254 states have internal predecessors, (399), 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) [2022-01-10 02:31:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:31:47,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:47,020 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:31:47,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -335189264, now seen corresponding path program 1 times [2022-01-10 02:31:47,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:47,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764708248] [2022-01-10 02:31:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:47,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 02:31:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:47,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:47,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764708248] [2022-01-10 02:31:47,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764708248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:47,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:47,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:31:47,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177008469] [2022-01-10 02:31:47,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:47,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:47,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:31:47,192 INFO L87 Difference]: Start difference. First operand has 287 states, 247 states have (on average 1.6153846153846154) internal successors, (399), 254 states have internal predecessors, (399), 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 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-01-10 02:31:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:47,451 INFO L93 Difference]: Finished difference Result 625 states and 988 transitions. [2022-01-10 02:31:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:31:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 44 [2022-01-10 02:31:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:47,462 INFO L225 Difference]: With dead ends: 625 [2022-01-10 02:31:47,463 INFO L226 Difference]: Without dead ends: 346 [2022-01-10 02:31:47,466 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:47,468 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 537 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:47,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 728 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:31:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-10 02:31:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2022-01-10 02:31:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 301 states have internal predecessors, (440), 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) [2022-01-10 02:31:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 504 transitions. [2022-01-10 02:31:47,525 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 504 transitions. Word has length 44 [2022-01-10 02:31:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:47,525 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 504 transitions. [2022-01-10 02:31:47,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-01-10 02:31:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 504 transitions. [2022-01-10 02:31:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:31:47,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:47,528 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:31:47,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:31:47,528 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1892579596, now seen corresponding path program 1 times [2022-01-10 02:31:47,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:47,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700013877] [2022-01-10 02:31:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:47,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:31:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:47,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:47,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700013877] [2022-01-10 02:31:47,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700013877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:47,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:47,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:31:47,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261887793] [2022-01-10 02:31:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:47,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:47,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:47,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:31:47,599 INFO L87 Difference]: Start difference. First operand 340 states and 504 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-01-10 02:31:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:47,842 INFO L93 Difference]: Finished difference Result 588 states and 844 transitions. [2022-01-10 02:31:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:31:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 45 [2022-01-10 02:31:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:47,857 INFO L225 Difference]: With dead ends: 588 [2022-01-10 02:31:47,857 INFO L226 Difference]: Without dead ends: 464 [2022-01-10 02:31:47,858 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:47,859 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 229 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:47,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 920 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:31:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-10 02:31:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 407. [2022-01-10 02:31:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 357 states have (on average 1.4677871148459383) internal successors, (524), 362 states have internal predecessors, (524), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-01-10 02:31:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2022-01-10 02:31:47,896 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 45 [2022-01-10 02:31:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:47,897 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2022-01-10 02:31:47,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-01-10 02:31:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2022-01-10 02:31:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:31:47,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:47,903 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:31:47,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:31:47,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1118030239, now seen corresponding path program 1 times [2022-01-10 02:31:47,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:47,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018850102] [2022-01-10 02:31:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:47,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:31:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:47,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018850102] [2022-01-10 02:31:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018850102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:47,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:47,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:31:47,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420173522] [2022-01-10 02:31:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:47,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:47,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:31:47,996 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-01-10 02:31:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:48,149 INFO L93 Difference]: Finished difference Result 815 states and 1153 transitions. [2022-01-10 02:31:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:31:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 45 [2022-01-10 02:31:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:48,153 INFO L225 Difference]: With dead ends: 815 [2022-01-10 02:31:48,153 INFO L226 Difference]: Without dead ends: 624 [2022-01-10 02:31:48,156 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:48,158 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 546 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:48,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 723 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:31:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-01-10 02:31:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 572. [2022-01-10 02:31:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 503 states have (on average 1.41948310139165) internal successors, (714), 511 states have internal predecessors, (714), 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) [2022-01-10 02:31:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 812 transitions. [2022-01-10 02:31:48,193 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 812 transitions. Word has length 45 [2022-01-10 02:31:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:48,193 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 812 transitions. [2022-01-10 02:31:48,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-01-10 02:31:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 812 transitions. [2022-01-10 02:31:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 02:31:48,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:48,194 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:31:48,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:31:48,195 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1874322656, now seen corresponding path program 1 times [2022-01-10 02:31:48,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102979418] [2022-01-10 02:31:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:48,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:31:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:31:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:31:48,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:48,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102979418] [2022-01-10 02:31:48,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102979418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:48,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:48,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:31:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425696920] [2022-01-10 02:31:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:48,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:31:48,274 INFO L87 Difference]: Start difference. First operand 572 states and 812 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-01-10 02:31:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:48,477 INFO L93 Difference]: Finished difference Result 1156 states and 1597 transitions. [2022-01-10 02:31:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:31:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 62 [2022-01-10 02:31:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:48,482 INFO L225 Difference]: With dead ends: 1156 [2022-01-10 02:31:48,482 INFO L226 Difference]: Without dead ends: 800 [2022-01-10 02:31:48,483 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:48,491 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 213 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:48,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 975 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:31:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-01-10 02:31:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 762. [2022-01-10 02:31:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 669 states have (on average 1.3662182361733932) internal successors, (914), 679 states have internal predecessors, (914), 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) [2022-01-10 02:31:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1050 transitions. [2022-01-10 02:31:48,520 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1050 transitions. Word has length 62 [2022-01-10 02:31:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:48,521 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1050 transitions. [2022-01-10 02:31:48,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-01-10 02:31:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1050 transitions. [2022-01-10 02:31:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:31:48,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:48,524 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:31:48,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:31:48,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:48,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1000568822, now seen corresponding path program 1 times [2022-01-10 02:31:48,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:48,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058700219] [2022-01-10 02:31:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:48,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-10 02:31:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:31:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:31:48,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:48,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058700219] [2022-01-10 02:31:48,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058700219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:48,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:48,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:31:48,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572276904] [2022-01-10 02:31:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:48,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:48,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:31:48,588 INFO L87 Difference]: Start difference. First operand 762 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-01-10 02:31:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:48,693 INFO L93 Difference]: Finished difference Result 1415 states and 1903 transitions. [2022-01-10 02:31:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:31:48,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 67 [2022-01-10 02:31:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:48,696 INFO L225 Difference]: With dead ends: 1415 [2022-01-10 02:31:48,696 INFO L226 Difference]: Without dead ends: 961 [2022-01-10 02:31:48,697 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:48,698 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 533 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:48,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 720 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:31:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-01-10 02:31:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 906. [2022-01-10 02:31:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 797 states have (on average 1.3362609786700126) internal successors, (1065), 809 states have internal predecessors, (1065), 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) [2022-01-10 02:31:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1223 transitions. [2022-01-10 02:31:48,724 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1223 transitions. Word has length 67 [2022-01-10 02:31:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:48,724 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1223 transitions. [2022-01-10 02:31:48,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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) [2022-01-10 02:31:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1223 transitions. [2022-01-10 02:31:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:31:48,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:48,725 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:48,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:31:48,726 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2083316816, now seen corresponding path program 1 times [2022-01-10 02:31:48,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:48,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194201648] [2022-01-10 02:31:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:48,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:31:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:31:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:31:48,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194201648] [2022-01-10 02:31:48,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194201648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:31:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830595371] [2022-01-10 02:31:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:48,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:31:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:31:48,831 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) [2022-01-10 02:31:48,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:31:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:48,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:31:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:31:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:49,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:31:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:31:49,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830595371] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 02:31:49,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:31:49,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-01-10 02:31:49,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811485592] [2022-01-10 02:31:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:49,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:31:49,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:31:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:31:49,139 INFO L87 Difference]: Start difference. First operand 906 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-01-10 02:31:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:49,254 INFO L93 Difference]: Finished difference Result 962 states and 1291 transitions. [2022-01-10 02:31:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:31:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 68 [2022-01-10 02:31:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:49,258 INFO L225 Difference]: With dead ends: 962 [2022-01-10 02:31:49,258 INFO L226 Difference]: Without dead ends: 959 [2022-01-10 02:31:49,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:31:49,259 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 733 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:49,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 505 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:31:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-01-10 02:31:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 905. [2022-01-10 02:31:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 797 states have (on average 1.3337515683814303) internal successors, (1063), 808 states have internal predecessors, (1063), 66 states have call successors, (66), 36 states have call predecessors, (66), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-01-10 02:31:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1220 transitions. [2022-01-10 02:31:49,284 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1220 transitions. Word has length 68 [2022-01-10 02:31:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1220 transitions. [2022-01-10 02:31:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-01-10 02:31:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1220 transitions. [2022-01-10 02:31:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 02:31:49,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:49,286 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:49,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:31:49,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 02:31:49,503 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -159219143, now seen corresponding path program 1 times [2022-01-10 02:31:49,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395799405] [2022-01-10 02:31:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:49,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:49,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:31:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:31:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:31:49,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:49,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395799405] [2022-01-10 02:31:49,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395799405] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:31:49,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197710265] [2022-01-10 02:31:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:49,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:31:49,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:31:49,577 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) [2022-01-10 02:31:49,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 02:31:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:49,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:31:49,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:31:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:49,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:31:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:31:49,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197710265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:31:49,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:31:49,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-01-10 02:31:49,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944626765] [2022-01-10 02:31:49,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:31:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:31:49,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:31:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:31:49,999 INFO L87 Difference]: Start difference. First operand 905 states and 1220 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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) [2022-01-10 02:31:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:50,977 INFO L93 Difference]: Finished difference Result 2605 states and 3440 transitions. [2022-01-10 02:31:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-10 02:31:50,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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 69 [2022-01-10 02:31:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:50,984 INFO L225 Difference]: With dead ends: 2605 [2022-01-10 02:31:50,984 INFO L226 Difference]: Without dead ends: 2061 [2022-01-10 02:31:50,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 02:31:50,987 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 890 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:50,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 3038 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:31:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2022-01-10 02:31:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1294. [2022-01-10 02:31:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1147 states have (on average 1.3051438535309503) internal successors, (1497), 1166 states have internal predecessors, (1497), 86 states have call successors, (86), 50 states have call predecessors, (86), 59 states have return successors, (125), 78 states have call predecessors, (125), 83 states have call successors, (125) [2022-01-10 02:31:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1708 transitions. [2022-01-10 02:31:51,044 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1708 transitions. Word has length 69 [2022-01-10 02:31:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:51,044 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 1708 transitions. [2022-01-10 02:31:51,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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) [2022-01-10 02:31:51,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1708 transitions. [2022-01-10 02:31:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 02:31:51,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:51,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2022-01-10 02:31:51,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 02:31:51,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-10 02:31:51,266 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1275467893, now seen corresponding path program 1 times [2022-01-10 02:31:51,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:51,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400867656] [2022-01-10 02:31:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:51,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:31:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:31:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:31:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 02:31:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 02:31:51,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:51,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400867656] [2022-01-10 02:31:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400867656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:31:51,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249192525] [2022-01-10 02:31:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:51,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:31:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:31:51,384 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) [2022-01-10 02:31:51,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 02:31:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:31:51,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:31:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:31:51,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:31:51,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249192525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:51,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:31:51,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 02:31:51,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224391695] [2022-01-10 02:31:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:31:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:31:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:51,552 INFO L87 Difference]: Start difference. First operand 1294 states and 1708 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:31:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:51,607 INFO L93 Difference]: Finished difference Result 2017 states and 2646 transitions. [2022-01-10 02:31:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:31:51,608 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-01-10 02:31:51,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:51,611 INFO L225 Difference]: With dead ends: 2017 [2022-01-10 02:31:51,611 INFO L226 Difference]: Without dead ends: 1172 [2022-01-10 02:31:51,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:51,613 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 373 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:51,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 519 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:31:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-10 02:31:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1157. [2022-01-10 02:31:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1026 states have (on average 1.3050682261208577) internal successors, (1339), 1044 states have internal predecessors, (1339), 78 states have call successors, (78), 44 states have call predecessors, (78), 51 states have return successors, (111), 69 states have call predecessors, (111), 75 states have call successors, (111) [2022-01-10 02:31:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1528 transitions. [2022-01-10 02:31:51,654 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1528 transitions. Word has length 88 [2022-01-10 02:31:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:51,654 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1528 transitions. [2022-01-10 02:31:51,654 INFO L471 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:31:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1528 transitions. [2022-01-10 02:31:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:51,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:51,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:51,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 02:31:51,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:31:51,877 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash -118977572, now seen corresponding path program 1 times [2022-01-10 02:31:51,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:51,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625475089] [2022-01-10 02:31:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:51,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625475089] [2022-01-10 02:31:51,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625475089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:51,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:51,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:51,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425851573] [2022-01-10 02:31:51,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:51,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:51,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:51,948 INFO L87 Difference]: Start difference. First operand 1157 states and 1528 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:53,162 INFO L93 Difference]: Finished difference Result 1694 states and 2384 transitions. [2022-01-10 02:31:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:31:53,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:31:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:53,167 INFO L225 Difference]: With dead ends: 1694 [2022-01-10 02:31:53,167 INFO L226 Difference]: Without dead ends: 1498 [2022-01-10 02:31:53,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:31:53,168 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 866 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:53,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1900 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:31:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-01-10 02:31:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1359. [2022-01-10 02:31:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1204 states have (on average 1.3446843853820598) internal successors, (1619), 1224 states have internal predecessors, (1619), 94 states have call successors, (94), 50 states have call predecessors, (94), 59 states have return successors, (134), 86 states have call predecessors, (134), 91 states have call successors, (134) [2022-01-10 02:31:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1847 transitions. [2022-01-10 02:31:53,218 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1847 transitions. Word has length 102 [2022-01-10 02:31:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:53,218 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1847 transitions. [2022-01-10 02:31:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1847 transitions. [2022-01-10 02:31:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:53,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:53,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:53,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:31:53,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:53,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1757505246, now seen corresponding path program 1 times [2022-01-10 02:31:53,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:53,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473653403] [2022-01-10 02:31:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:53,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:53,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473653403] [2022-01-10 02:31:53,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473653403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:53,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:53,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:53,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031799788] [2022-01-10 02:31:53,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:53,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:53,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:53,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:53,282 INFO L87 Difference]: Start difference. First operand 1359 states and 1847 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:54,556 INFO L93 Difference]: Finished difference Result 2374 states and 3451 transitions. [2022-01-10 02:31:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:31:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:31:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:54,563 INFO L225 Difference]: With dead ends: 2374 [2022-01-10 02:31:54,563 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 02:31:54,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:31:54,564 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 868 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:54,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1811 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:31:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 02:31:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1731. [2022-01-10 02:31:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1534 states have (on average 1.3872229465449804) internal successors, (2128), 1556 states have internal predecessors, (2128), 122 states have call successors, (122), 62 states have call predecessors, (122), 73 states have return successors, (172), 116 states have call predecessors, (172), 119 states have call successors, (172) [2022-01-10 02:31:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2422 transitions. [2022-01-10 02:31:54,630 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2422 transitions. Word has length 102 [2022-01-10 02:31:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:54,630 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 2422 transitions. [2022-01-10 02:31:54,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2422 transitions. [2022-01-10 02:31:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:54,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:54,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:54,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:31:54,633 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash -121625700, now seen corresponding path program 1 times [2022-01-10 02:31:54,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:54,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551779721] [2022-01-10 02:31:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:54,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:54,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:54,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551779721] [2022-01-10 02:31:54,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551779721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:54,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:54,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:54,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503284427] [2022-01-10 02:31:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:54,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:54,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:54,699 INFO L87 Difference]: Start difference. First operand 1731 states and 2422 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:55,263 INFO L93 Difference]: Finished difference Result 2749 states and 4045 transitions. [2022-01-10 02:31:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:31:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:31:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:55,269 INFO L225 Difference]: With dead ends: 2749 [2022-01-10 02:31:55,269 INFO L226 Difference]: Without dead ends: 1979 [2022-01-10 02:31:55,271 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:31:55,271 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 816 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:55,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 978 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:31:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2022-01-10 02:31:55,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1731. [2022-01-10 02:31:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1534 states have (on average 1.3839634941329857) internal successors, (2123), 1556 states have internal predecessors, (2123), 122 states have call successors, (122), 62 states have call predecessors, (122), 73 states have return successors, (172), 116 states have call predecessors, (172), 119 states have call successors, (172) [2022-01-10 02:31:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2417 transitions. [2022-01-10 02:31:55,335 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2417 transitions. Word has length 102 [2022-01-10 02:31:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:55,336 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 2417 transitions. [2022-01-10 02:31:55,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2417 transitions. [2022-01-10 02:31:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:55,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:55,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:55,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:31:55,338 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1203230494, now seen corresponding path program 1 times [2022-01-10 02:31:55,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848222347] [2022-01-10 02:31:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:55,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:55,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:55,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848222347] [2022-01-10 02:31:55,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848222347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:55,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502734456] [2022-01-10 02:31:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:55,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:55,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:55,398 INFO L87 Difference]: Start difference. First operand 1731 states and 2417 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:56,617 INFO L93 Difference]: Finished difference Result 3699 states and 5504 transitions. [2022-01-10 02:31:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:31:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:31:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:56,642 INFO L225 Difference]: With dead ends: 3699 [2022-01-10 02:31:56,642 INFO L226 Difference]: Without dead ends: 2931 [2022-01-10 02:31:56,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:31:56,649 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 865 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:56,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1802 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:31:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2022-01-10 02:31:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2480. [2022-01-10 02:31:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2199 states have (on average 1.428831286948613) internal successors, (3142), 2225 states have internal predecessors, (3142), 178 states have call successors, (178), 86 states have call predecessors, (178), 101 states have return successors, (254), 176 states have call predecessors, (254), 175 states have call successors, (254) [2022-01-10 02:31:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3574 transitions. [2022-01-10 02:31:56,767 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3574 transitions. Word has length 102 [2022-01-10 02:31:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3574 transitions. [2022-01-10 02:31:56,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3574 transitions. [2022-01-10 02:31:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:56,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:56,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:56,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:31:56,770 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1524978852, now seen corresponding path program 1 times [2022-01-10 02:31:56,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:56,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649515417] [2022-01-10 02:31:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:56,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:56,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:56,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649515417] [2022-01-10 02:31:56,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649515417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:56,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:56,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:56,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628411858] [2022-01-10 02:31:56,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:56,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:56,845 INFO L87 Difference]: Start difference. First operand 2480 states and 3574 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:58,062 INFO L93 Difference]: Finished difference Result 6356 states and 9661 transitions. [2022-01-10 02:31:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:31:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:31:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:58,109 INFO L225 Difference]: With dead ends: 6356 [2022-01-10 02:31:58,109 INFO L226 Difference]: Without dead ends: 4839 [2022-01-10 02:31:58,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:31:58,116 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 865 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:58,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1799 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:31:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2022-01-10 02:31:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 3985. [2022-01-10 02:31:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3536 states have (on average 1.467760180995475) internal successors, (5190), 3570 states have internal predecessors, (5190), 290 states have call successors, (290), 134 states have call predecessors, (290), 157 states have return successors, (436), 296 states have call predecessors, (436), 287 states have call successors, (436) [2022-01-10 02:31:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5916 transitions. [2022-01-10 02:31:58,325 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5916 transitions. Word has length 102 [2022-01-10 02:31:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:58,325 INFO L470 AbstractCegarLoop]: Abstraction has 3985 states and 5916 transitions. [2022-01-10 02:31:58,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:31:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5916 transitions. [2022-01-10 02:31:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:31:58,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:58,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:58,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:31:58,329 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1712150366, now seen corresponding path program 1 times [2022-01-10 02:31:58,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:58,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815710344] [2022-01-10 02:31:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:58,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:31:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:31:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:31:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:31:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:31:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:31:58,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815710344] [2022-01-10 02:31:58,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815710344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:58,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:58,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:31:58,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746310873] [2022-01-10 02:31:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:58,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:31:58,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:31:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:31:58,406 INFO L87 Difference]: Start difference. First operand 3985 states and 5916 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:00,038 INFO L93 Difference]: Finished difference Result 12933 states and 19923 transitions. [2022-01-10 02:32:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:00,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:00,083 INFO L225 Difference]: With dead ends: 12933 [2022-01-10 02:32:00,083 INFO L226 Difference]: Without dead ends: 9911 [2022-01-10 02:32:00,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:00,092 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1080 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:00,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 1790 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:32:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9911 states. [2022-01-10 02:32:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9911 to 6962. [2022-01-10 02:32:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6193 states have (on average 1.4978201194897465) internal successors, (9276), 6243 states have internal predecessors, (9276), 498 states have call successors, (498), 230 states have call predecessors, (498), 269 states have return successors, (838), 520 states have call predecessors, (838), 495 states have call successors, (838) [2022-01-10 02:32:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 10612 transitions. [2022-01-10 02:32:00,482 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 10612 transitions. Word has length 102 [2022-01-10 02:32:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:00,483 INFO L470 AbstractCegarLoop]: Abstraction has 6962 states and 10612 transitions. [2022-01-10 02:32:00,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 10612 transitions. [2022-01-10 02:32:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:32:00,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:00,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:00,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:32:00,491 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:00,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 569647900, now seen corresponding path program 1 times [2022-01-10 02:32:00,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995522821] [2022-01-10 02:32:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:00,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:00,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:00,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995522821] [2022-01-10 02:32:00,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995522821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:00,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:00,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:00,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200822161] [2022-01-10 02:32:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:00,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:00,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:00,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:00,563 INFO L87 Difference]: Start difference. First operand 6962 states and 10612 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:01,501 INFO L93 Difference]: Finished difference Result 14664 states and 22986 transitions. [2022-01-10 02:32:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:32:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:01,528 INFO L225 Difference]: With dead ends: 14664 [2022-01-10 02:32:01,528 INFO L226 Difference]: Without dead ends: 8663 [2022-01-10 02:32:01,542 INFO L932 BasicCegarLoop]: 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 [2022-01-10 02:32:01,543 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 818 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:01,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 961 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:32:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8663 states. [2022-01-10 02:32:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8663 to 6962. [2022-01-10 02:32:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6193 states have (on average 1.4924915226869047) internal successors, (9243), 6243 states have internal predecessors, (9243), 498 states have call successors, (498), 230 states have call predecessors, (498), 269 states have return successors, (838), 520 states have call predecessors, (838), 495 states have call successors, (838) [2022-01-10 02:32:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 10579 transitions. [2022-01-10 02:32:01,914 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 10579 transitions. Word has length 102 [2022-01-10 02:32:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:01,915 INFO L470 AbstractCegarLoop]: Abstraction has 6962 states and 10579 transitions. [2022-01-10 02:32:01,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 10579 transitions. [2022-01-10 02:32:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:32:01,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:01,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:01,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:32:01,922 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash 809887646, now seen corresponding path program 1 times [2022-01-10 02:32:01,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:01,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399879656] [2022-01-10 02:32:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:01,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:01,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399879656] [2022-01-10 02:32:01,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399879656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:01,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:01,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:01,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074055867] [2022-01-10 02:32:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:01,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:01,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:01,990 INFO L87 Difference]: Start difference. First operand 6962 states and 10579 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:04,110 INFO L93 Difference]: Finished difference Result 23366 states and 36411 transitions. [2022-01-10 02:32:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:04,196 INFO L225 Difference]: With dead ends: 23366 [2022-01-10 02:32:04,211 INFO L226 Difference]: Without dead ends: 17367 [2022-01-10 02:32:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:04,250 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 896 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:04,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 1818 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:32:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17367 states. [2022-01-10 02:32:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17367 to 12962. [2022-01-10 02:32:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 11569 states have (on average 1.5119716483706458) internal successors, (17492), 11651 states have internal predecessors, (17492), 898 states have call successors, (898), 422 states have call predecessors, (898), 493 states have return successors, (1788), 952 states have call predecessors, (1788), 895 states have call successors, (1788) [2022-01-10 02:32:05,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 20178 transitions. [2022-01-10 02:32:05,156 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 20178 transitions. Word has length 102 [2022-01-10 02:32:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:05,156 INFO L470 AbstractCegarLoop]: Abstraction has 12962 states and 20178 transitions. [2022-01-10 02:32:05,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 20178 transitions. [2022-01-10 02:32:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:32:05,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:05,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:05,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:32:05,166 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:05,166 INFO L85 PathProgramCache]: Analyzing trace with hash 836953248, now seen corresponding path program 1 times [2022-01-10 02:32:05,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:05,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12278557] [2022-01-10 02:32:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:05,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:05,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:05,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12278557] [2022-01-10 02:32:05,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12278557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:05,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:05,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:05,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268198600] [2022-01-10 02:32:05,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:05,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:05,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:05,227 INFO L87 Difference]: Start difference. First operand 12962 states and 20178 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:08,412 INFO L93 Difference]: Finished difference Result 44566 states and 70622 transitions. [2022-01-10 02:32:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:08,522 INFO L225 Difference]: With dead ends: 44566 [2022-01-10 02:32:08,522 INFO L226 Difference]: Without dead ends: 32567 [2022-01-10 02:32:08,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:08,556 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 933 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:08,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 1769 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:32:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32567 states. [2022-01-10 02:32:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32567 to 24930. [2022-01-10 02:32:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24930 states, 22321 states have (on average 1.5242148649254066) internal successors, (34022), 22467 states have internal predecessors, (34022), 1666 states have call successors, (1666), 806 states have call predecessors, (1666), 941 states have return successors, (4142), 1784 states have call predecessors, (4142), 1663 states have call successors, (4142) [2022-01-10 02:32:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24930 states to 24930 states and 39830 transitions. [2022-01-10 02:32:09,928 INFO L78 Accepts]: Start accepts. Automaton has 24930 states and 39830 transitions. Word has length 102 [2022-01-10 02:32:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:09,929 INFO L470 AbstractCegarLoop]: Abstraction has 24930 states and 39830 transitions. [2022-01-10 02:32:09,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 24930 states and 39830 transitions. [2022-01-10 02:32:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:32:09,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:09,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:09,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:32:09,945 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:09,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1240383650, now seen corresponding path program 1 times [2022-01-10 02:32:09,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:09,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709413251] [2022-01-10 02:32:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:09,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:10,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:10,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709413251] [2022-01-10 02:32:10,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709413251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:10,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:10,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:10,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940736019] [2022-01-10 02:32:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:10,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:10,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:10,009 INFO L87 Difference]: Start difference. First operand 24930 states and 39830 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:14,595 INFO L93 Difference]: Finished difference Result 85782 states and 139100 transitions. [2022-01-10 02:32:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:14,823 INFO L225 Difference]: With dead ends: 85782 [2022-01-10 02:32:14,823 INFO L226 Difference]: Without dead ends: 61815 [2022-01-10 02:32:14,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:14,884 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 895 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:14,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 1765 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:32:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61815 states. [2022-01-10 02:32:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61815 to 48802. [2022-01-10 02:32:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48802 states, 43825 states have (on average 1.5321391899600685) internal successors, (67146), 44099 states have internal predecessors, (67146), 3138 states have call successors, (3138), 1574 states have call predecessors, (3138), 1837 states have return successors, (10244), 3384 states have call predecessors, (10244), 3135 states have call successors, (10244) [2022-01-10 02:32:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48802 states to 48802 states and 80528 transitions. [2022-01-10 02:32:18,024 INFO L78 Accepts]: Start accepts. Automaton has 48802 states and 80528 transitions. Word has length 102 [2022-01-10 02:32:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:18,025 INFO L470 AbstractCegarLoop]: Abstraction has 48802 states and 80528 transitions. [2022-01-10 02:32:18,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 02:32:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48802 states and 80528 transitions. [2022-01-10 02:32:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 02:32:18,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:18,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:18,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:32:18,053 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash 493720800, now seen corresponding path program 1 times [2022-01-10 02:32:18,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397366318] [2022-01-10 02:32:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:18,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:32:18,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:18,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397366318] [2022-01-10 02:32:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397366318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:18,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:32:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294865365] [2022-01-10 02:32:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:18,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:32:18,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:32:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:32:18,111 INFO L87 Difference]: Start difference. First operand 48802 states and 80528 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-01-10 02:32:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:26,037 INFO L93 Difference]: Finished difference Result 163812 states and 267994 transitions. [2022-01-10 02:32:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:32:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-01-10 02:32:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:26,492 INFO L225 Difference]: With dead ends: 163812 [2022-01-10 02:32:26,492 INFO L226 Difference]: Without dead ends: 115973 [2022-01-10 02:32:26,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:32:26,586 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1113 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:26,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1518 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:32:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115973 states. [2022-01-10 02:32:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115973 to 94075. [2022-01-10 02:32:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94075 states, 84233 states have (on average 1.517683093324469) internal successors, (127839), 85019 states have internal predecessors, (127839), 6211 states have call successors, (6211), 3110 states have call predecessors, (6211), 3629 states have return successors, (20133), 6201 states have call predecessors, (20133), 6208 states have call successors, (20133) [2022-01-10 02:32:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94075 states to 94075 states and 154183 transitions. [2022-01-10 02:32:32,749 INFO L78 Accepts]: Start accepts. Automaton has 94075 states and 154183 transitions. Word has length 102 [2022-01-10 02:32:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:32,759 INFO L470 AbstractCegarLoop]: Abstraction has 94075 states and 154183 transitions. [2022-01-10 02:32:32,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-01-10 02:32:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 94075 states and 154183 transitions. [2022-01-10 02:32:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 02:32:32,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:32,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 02:32:32,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:32:32,865 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1031380781, now seen corresponding path program 1 times [2022-01-10 02:32:32,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:32,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884222972] [2022-01-10 02:32:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:32,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:32:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 02:32:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:32:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 02:32:32,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884222972] [2022-01-10 02:32:32,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884222972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:32,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813213979] [2022-01-10 02:32:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:32,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:32,947 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) [2022-01-10 02:32:32,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 02:32:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:33,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:32:33,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:32:33,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:33,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813213979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:33,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:33,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 02:32:33,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720695423] [2022-01-10 02:32:33,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:33,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:33,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:33,201 INFO L87 Difference]: Start difference. First operand 94075 states and 154183 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 02:32:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:37,314 INFO L93 Difference]: Finished difference Result 94454 states and 154651 transitions. [2022-01-10 02:32:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:32:37,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 103 [2022-01-10 02:32:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:37,783 INFO L225 Difference]: With dead ends: 94454 [2022-01-10 02:32:37,783 INFO L226 Difference]: Without dead ends: 93128 [2022-01-10 02:32:37,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:37,828 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 62 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:37,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 842 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2022-01-10 02:32:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 93128. [2022-01-10 02:32:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93128 states, 83389 states have (on average 1.5203564019235152) internal successors, (126781), 84159 states have internal predecessors, (126781), 6154 states have call successors, (6154), 3073 states have call predecessors, (6154), 3584 states have return successors, (20041), 6151 states have call predecessors, (20041), 6152 states have call successors, (20041) [2022-01-10 02:32:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93128 states to 93128 states and 152976 transitions. [2022-01-10 02:32:43,561 INFO L78 Accepts]: Start accepts. Automaton has 93128 states and 152976 transitions. Word has length 103 [2022-01-10 02:32:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:43,561 INFO L470 AbstractCegarLoop]: Abstraction has 93128 states and 152976 transitions. [2022-01-10 02:32:43,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 02:32:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 93128 states and 152976 transitions. [2022-01-10 02:32:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 02:32:43,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:43,716 INFO L514 BasicCegarLoop]: 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, 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, 1, 1, 1] [2022-01-10 02:32:43,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:43,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:43,935 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1230757169, now seen corresponding path program 1 times [2022-01-10 02:32:43,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:43,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824853826] [2022-01-10 02:32:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:43,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 02:32:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 02:32:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 02:32:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 02:32:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:32:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:32:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:32:44,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:44,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824853826] [2022-01-10 02:32:44,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824853826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:44,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832624653] [2022-01-10 02:32:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:44,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:44,052 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) [2022-01-10 02:32:44,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 02:32:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:32:44,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 02:32:44,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:44,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832624653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:44,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:44,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-01-10 02:32:44,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773475167] [2022-01-10 02:32:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:44,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:44,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:44,384 INFO L87 Difference]: Start difference. First operand 93128 states and 152976 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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)