/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.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:32:06,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:32:06,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:32:06,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:32:06,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:32:06,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:32:06,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:32:06,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:32:06,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:32:06,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:32:06,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:32:06,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:32:06,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:32:06,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:32:06,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:32:06,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:32:06,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:32:06,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:32:06,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:32:06,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:32:06,874 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 02:32:06,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:32:06,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:32:06,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:32:06,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:32:06,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:32:06,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:32:06,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:32:06,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:32:06,903 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:32:06,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:32:06,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:32:06,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:32:06,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:32:06,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:32:06,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:32:06,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:32:06,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:32:06,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:32:06,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:32:06,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:32:06,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:32:06,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:32:06,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:32:06,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:32:06,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:32:07,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:32:07,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:32:07,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:32:07,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:32:07,106 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:32:07,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2022-01-10 02:32:07,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccbe7879/13e1549cc0ae4cf88b119a97146c6eef/FLAG61431f047 [2022-01-10 02:32:07,599 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:32:07,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2022-01-10 02:32:07,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccbe7879/13e1549cc0ae4cf88b119a97146c6eef/FLAG61431f047 [2022-01-10 02:32:07,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccbe7879/13e1549cc0ae4cf88b119a97146c6eef [2022-01-10 02:32:07,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:32:07,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:32:07,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:32:07,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:32:07,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:32:07,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:07" (1/1) ... [2022-01-10 02:32:07,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7768b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:07, skipping insertion in model container [2022-01-10 02:32:07,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:07" (1/1) ... [2022-01-10 02:32:07,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:32:08,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:32:08,147 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.07.cil-2.c[913,926] [2022-01-10 02:32:08,184 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.07.cil-2.c[5977,5990] [2022-01-10 02:32:08,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:32:08,266 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:32:08,277 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.07.cil-2.c[913,926] [2022-01-10 02:32:08,289 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.07.cil-2.c[5977,5990] [2022-01-10 02:32:08,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:32:08,349 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:32:08,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08 WrapperNode [2022-01-10 02:32:08,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:32:08,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:32:08,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:32:08,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:32:08,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,422 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 770 [2022-01-10 02:32:08,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:32:08,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:32:08,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:32:08,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:32:08,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:32:08,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:32:08,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:32:08,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:32:08,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (1/1) ... [2022-01-10 02:32:08,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:32:08,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:08,501 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 02:32:08,504 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 02:32:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:32:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:32:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:32:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-01-10 02:32:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-01-10 02:32:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:32:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:32:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:32:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:32:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:32:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:32:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:32:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:32:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:32:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:32:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:32:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:32:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:32:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:32:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:32:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:32:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:32:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 02:32:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 02:32:08,627 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:32:08,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:32:09,249 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:32:09,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:32:09,264 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 02:32:09,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:09 BoogieIcfgContainer [2022-01-10 02:32:09,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:32:09,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:32:09,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:32:09,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:32:09,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:32:07" (1/3) ... [2022-01-10 02:32:09,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e190866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:09, skipping insertion in model container [2022-01-10 02:32:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:08" (2/3) ... [2022-01-10 02:32:09,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e190866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:09, skipping insertion in model container [2022-01-10 02:32:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:09" (3/3) ... [2022-01-10 02:32:09,275 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2022-01-10 02:32:09,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:32:09,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:32:09,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:32:09,344 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 02:32:09,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:32:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 295 states have (on average 1.6305084745762712) internal successors, (481), 302 states have internal predecessors, (481), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 02:32:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:32:09,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:09,380 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 02:32:09,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:09,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1847499811, now seen corresponding path program 1 times [2022-01-10 02:32:09,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:09,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660470748] [2022-01-10 02:32:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:09,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 02:32:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:09,663 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 02:32:09,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660470748] [2022-01-10 02:32:09,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660470748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:09,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:09,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:09,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862800796] [2022-01-10 02:32:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:09,712 INFO L87 Difference]: Start difference. First operand has 337 states, 295 states have (on average 1.6305084745762712) internal successors, (481), 302 states have internal predecessors, (481), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) 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 02:32:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:10,015 INFO L93 Difference]: Finished difference Result 723 states and 1156 transitions. [2022-01-10 02:32:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:10,018 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 02:32:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:10,031 INFO L225 Difference]: With dead ends: 723 [2022-01-10 02:32:10,031 INFO L226 Difference]: Without dead ends: 396 [2022-01-10 02:32:10,037 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 02:32:10,040 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 657 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:10,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 854 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:32:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-10 02:32:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2022-01-10 02:32:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 344 states have (on average 1.505813953488372) internal successors, (518), 349 states have internal predecessors, (518), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2022-01-10 02:32:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 586 transitions. [2022-01-10 02:32:10,136 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 586 transitions. Word has length 44 [2022-01-10 02:32:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:10,137 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 586 transitions. [2022-01-10 02:32:10,138 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 02:32:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 586 transitions. [2022-01-10 02:32:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:32:10,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:10,145 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 02:32:10,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:32:10,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2047693479, now seen corresponding path program 1 times [2022-01-10 02:32:10,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:10,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918713570] [2022-01-10 02:32:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:10,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:32:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,219 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 02:32:10,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918713570] [2022-01-10 02:32:10,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918713570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:10,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:10,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:10,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789804251] [2022-01-10 02:32:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:10,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:10,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:10,223 INFO L87 Difference]: Start difference. First operand 390 states and 586 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 02:32:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:10,607 INFO L93 Difference]: Finished difference Result 638 states and 926 transitions. [2022-01-10 02:32:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:10,608 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 02:32:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:10,613 INFO L225 Difference]: With dead ends: 638 [2022-01-10 02:32:10,613 INFO L226 Difference]: Without dead ends: 514 [2022-01-10 02:32:10,614 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 02:32:10,616 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 279 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:10,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 1050 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:32:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-01-10 02:32:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 457. [2022-01-10 02:32:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 405 states have (on average 1.4864197530864198) internal successors, (602), 410 states have internal predecessors, (602), 36 states have call successors, (36), 15 states have call predecessors, (36), 14 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2022-01-10 02:32:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 676 transitions. [2022-01-10 02:32:10,646 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 676 transitions. Word has length 45 [2022-01-10 02:32:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:10,647 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 676 transitions. [2022-01-10 02:32:10,647 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 02:32:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 676 transitions. [2022-01-10 02:32:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:32:10,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:10,649 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 02:32:10,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:32:10,649 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 763336018, now seen corresponding path program 1 times [2022-01-10 02:32:10,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:10,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550290224] [2022-01-10 02:32:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:10,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 02:32:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:10,715 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 02:32:10,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550290224] [2022-01-10 02:32:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550290224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:10,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:10,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:10,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403167483] [2022-01-10 02:32:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:10,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:10,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:10,718 INFO L87 Difference]: Start difference. First operand 457 states and 676 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 02:32:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:10,869 INFO L93 Difference]: Finished difference Result 865 states and 1235 transitions. [2022-01-10 02:32:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:10,869 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 02:32:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:10,874 INFO L225 Difference]: With dead ends: 865 [2022-01-10 02:32:10,874 INFO L226 Difference]: Without dead ends: 674 [2022-01-10 02:32:10,875 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 02:32:10,876 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 673 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:10,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 826 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-01-10 02:32:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 622. [2022-01-10 02:32:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 551 states have (on average 1.4373865698729582) internal successors, (792), 559 states have internal predecessors, (792), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2022-01-10 02:32:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 894 transitions. [2022-01-10 02:32:10,915 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 894 transitions. Word has length 45 [2022-01-10 02:32:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:10,916 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 894 transitions. [2022-01-10 02:32:10,916 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 02:32:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 894 transitions. [2022-01-10 02:32:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 02:32:10,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:10,923 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 02:32:10,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:32:10,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 313583757, now seen corresponding path program 1 times [2022-01-10 02:32:10,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:10,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205017335] [2022-01-10 02:32:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:10,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:32:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:32:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,062 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 02:32:11,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205017335] [2022-01-10 02:32:11,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205017335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:11,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:11,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:11,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828016591] [2022-01-10 02:32:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:11,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:11,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:11,067 INFO L87 Difference]: Start difference. First operand 622 states and 894 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 02:32:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:11,373 INFO L93 Difference]: Finished difference Result 1206 states and 1679 transitions. [2022-01-10 02:32:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:11,373 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 02:32:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:11,379 INFO L225 Difference]: With dead ends: 1206 [2022-01-10 02:32:11,379 INFO L226 Difference]: Without dead ends: 850 [2022-01-10 02:32:11,381 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 02:32:11,389 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 263 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:11,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 1107 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:32:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-10 02:32:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 812. [2022-01-10 02:32:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 717 states have (on average 1.383542538354254) internal successors, (992), 727 states have internal predecessors, (992), 61 states have call successors, (61), 30 states have call predecessors, (61), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2022-01-10 02:32:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1132 transitions. [2022-01-10 02:32:11,431 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1132 transitions. Word has length 62 [2022-01-10 02:32:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:11,432 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1132 transitions. [2022-01-10 02:32:11,432 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 02:32:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1132 transitions. [2022-01-10 02:32:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:32:11,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:11,434 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 02:32:11,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:32:11,435 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 37906234, now seen corresponding path program 1 times [2022-01-10 02:32:11,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:11,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196061655] [2022-01-10 02:32:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:11,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-10 02:32:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:32:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,504 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 02:32:11,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:11,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196061655] [2022-01-10 02:32:11,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196061655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:11,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:11,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:11,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951171427] [2022-01-10 02:32:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:11,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:11,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:11,507 INFO L87 Difference]: Start difference. First operand 812 states and 1132 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 02:32:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:11,649 INFO L93 Difference]: Finished difference Result 1465 states and 1985 transitions. [2022-01-10 02:32:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:11,649 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 02:32:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:11,656 INFO L225 Difference]: With dead ends: 1465 [2022-01-10 02:32:11,656 INFO L226 Difference]: Without dead ends: 1011 [2022-01-10 02:32:11,658 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 02:32:11,660 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 663 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:11,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 820 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-01-10 02:32:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 956. [2022-01-10 02:32:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 845 states have (on average 1.352662721893491) internal successors, (1143), 857 states have internal predecessors, (1143), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2022-01-10 02:32:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1305 transitions. [2022-01-10 02:32:11,705 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1305 transitions. Word has length 67 [2022-01-10 02:32:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1305 transitions. [2022-01-10 02:32:11,706 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 02:32:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1305 transitions. [2022-01-10 02:32:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:32:11,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:11,708 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:32:11,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:32:11,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2022374513, now seen corresponding path program 1 times [2022-01-10 02:32:11,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:11,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029540601] [2022-01-10 02:32:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:11,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:32:11,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029540601] [2022-01-10 02:32:11,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029540601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070889729] [2022-01-10 02:32:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:11,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:11,807 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 02:32:11,831 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 02:32:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:11,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:32:11,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:32:12,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:12,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070889729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:12,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:12,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 02:32:12,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211119964] [2022-01-10 02:32:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:12,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:12,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:12,090 INFO L87 Difference]: Start difference. First operand 956 states and 1305 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:32:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:12,127 INFO L93 Difference]: Finished difference Result 1499 states and 2028 transitions. [2022-01-10 02:32:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:32:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-01-10 02:32:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:12,133 INFO L225 Difference]: With dead ends: 1499 [2022-01-10 02:32:12,133 INFO L226 Difference]: Without dead ends: 954 [2022-01-10 02:32:12,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 02:32:12,135 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 72 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:12,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1012 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-01-10 02:32:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 910. [2022-01-10 02:32:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 805 states have (on average 1.3391304347826087) internal successors, (1078), 817 states have internal predecessors, (1078), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2022-01-10 02:32:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1230 transitions. [2022-01-10 02:32:12,174 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1230 transitions. Word has length 68 [2022-01-10 02:32:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 1230 transitions. [2022-01-10 02:32:12,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:32:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1230 transitions. [2022-01-10 02:32:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:32:12,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:12,177 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 02:32:12,203 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 02:32:12,401 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 02:32:12,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:12,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 157597262, now seen corresponding path program 1 times [2022-01-10 02:32:12,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:12,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428503213] [2022-01-10 02:32:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:12,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:32:12,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428503213] [2022-01-10 02:32:12,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428503213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:12,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359785774] [2022-01-10 02:32:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:12,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:12,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:12,510 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 02:32:12,511 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 02:32:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 02:32:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:32:12,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:12,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359785774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:12,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:12,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-01-10 02:32:12,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700981336] [2022-01-10 02:32:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:12,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:32:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:32:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:32:12,783 INFO L87 Difference]: Start difference. First operand 910 states and 1230 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:32:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:12,841 INFO L93 Difference]: Finished difference Result 1404 states and 1879 transitions. [2022-01-10 02:32:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:12,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2022-01-10 02:32:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:12,846 INFO L225 Difference]: With dead ends: 1404 [2022-01-10 02:32:12,846 INFO L226 Difference]: Without dead ends: 1002 [2022-01-10 02:32:12,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:32:12,848 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 39 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:12,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1980 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-01-10 02:32:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 934. [2022-01-10 02:32:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 829 states have (on average 1.3293124246079615) internal successors, (1102), 841 states have internal predecessors, (1102), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2022-01-10 02:32:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1254 transitions. [2022-01-10 02:32:12,888 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1254 transitions. Word has length 68 [2022-01-10 02:32:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:12,888 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1254 transitions. [2022-01-10 02:32:12,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:32:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1254 transitions. [2022-01-10 02:32:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:32:12,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:12,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:12,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:13,107 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 02:32:13,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 744403276, now seen corresponding path program 1 times [2022-01-10 02:32:13,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:13,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299333486] [2022-01-10 02:32:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:13,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:32:13,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299333486] [2022-01-10 02:32:13,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299333486] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866382067] [2022-01-10 02:32:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:13,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:13,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:13,195 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 02:32:13,197 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 02:32:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:32:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:13,432 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 02:32:13,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:32:13,536 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 02:32:13,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866382067] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:13,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:32:13,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-01-10 02:32:13,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397177833] [2022-01-10 02:32:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:13,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:13,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:13,539 INFO L87 Difference]: Start difference. First operand 934 states and 1254 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 02:32:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:13,663 INFO L93 Difference]: Finished difference Result 986 states and 1316 transitions. [2022-01-10 02:32:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:32:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 02:32:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:13,668 INFO L225 Difference]: With dead ends: 986 [2022-01-10 02:32:13,668 INFO L226 Difference]: Without dead ends: 983 [2022-01-10 02:32:13,669 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 02:32:13,670 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 885 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:13,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 582 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-01-10 02:32:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 933. [2022-01-10 02:32:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 829 states have (on average 1.3268998793727382) internal successors, (1100), 840 states have internal predecessors, (1100), 64 states have call successors, (64), 34 states have call predecessors, (64), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2022-01-10 02:32:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1251 transitions. [2022-01-10 02:32:13,712 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1251 transitions. Word has length 68 [2022-01-10 02:32:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:13,712 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1251 transitions. [2022-01-10 02:32:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 02:32:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1251 transitions. [2022-01-10 02:32:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 02:32:13,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:13,715 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:32:13,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 02:32:13,940 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 02:32:13,940 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1600611039, now seen corresponding path program 1 times [2022-01-10 02:32:13,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998054082] [2022-01-10 02:32:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:13,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:32:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:32:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998054082] [2022-01-10 02:32:14,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998054082] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008780970] [2022-01-10 02:32:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:14,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:14,026 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 02:32:14,057 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 02:32:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:32:14,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:14,495 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 02:32:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:32:14,647 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 02:32:14,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008780970] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:32:14,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:32:14,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-01-10 02:32:14,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287363604] [2022-01-10 02:32:14,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:32:14,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:32:14,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:32:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:32:14,650 INFO L87 Difference]: Start difference. First operand 933 states and 1251 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 02:32:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:16,073 INFO L93 Difference]: Finished difference Result 2320 states and 3008 transitions. [2022-01-10 02:32:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-10 02:32:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 02:32:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:16,083 INFO L225 Difference]: With dead ends: 2320 [2022-01-10 02:32:16,083 INFO L226 Difference]: Without dead ends: 1683 [2022-01-10 02:32:16,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=460, Invalid=2402, Unknown=0, NotChecked=0, Total=2862 [2022-01-10 02:32:16,087 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1379 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:16,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 2737 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:32:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-01-10 02:32:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1133. [2022-01-10 02:32:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1009 states have (on average 1.3012884043607533) internal successors, (1313), 1026 states have internal predecessors, (1313), 73 states have call successors, (73), 41 states have call predecessors, (73), 49 states have return successors, (100), 66 states have call predecessors, (100), 70 states have call successors, (100) [2022-01-10 02:32:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1486 transitions. [2022-01-10 02:32:16,153 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1486 transitions. Word has length 69 [2022-01-10 02:32:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:16,153 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1486 transitions. [2022-01-10 02:32:16,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 02:32:16,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1486 transitions. [2022-01-10 02:32:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 02:32:16,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:16,158 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 02:32:16,185 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 02:32:16,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:16,372 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash 155816347, now seen corresponding path program 1 times [2022-01-10 02:32:16,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:16,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944348817] [2022-01-10 02:32:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:16,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:32:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 02:32:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 02:32:16,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:16,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944348817] [2022-01-10 02:32:16,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944348817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:16,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:16,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:32:16,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346037273] [2022-01-10 02:32:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:16,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:32:16,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:32:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:32:16,418 INFO L87 Difference]: Start difference. First operand 1133 states and 1486 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:32:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:16,613 INFO L93 Difference]: Finished difference Result 1851 states and 2368 transitions. [2022-01-10 02:32:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:32:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-01-10 02:32:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:16,619 INFO L225 Difference]: With dead ends: 1851 [2022-01-10 02:32:16,619 INFO L226 Difference]: Without dead ends: 1175 [2022-01-10 02:32:16,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:16,622 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 665 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:16,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 839 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:32:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-01-10 02:32:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1061. [2022-01-10 02:32:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 944 states have (on average 1.2944915254237288) internal successors, (1222), 961 states have internal predecessors, (1222), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (95), 62 states have call predecessors, (95), 67 states have call successors, (95) [2022-01-10 02:32:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1387 transitions. [2022-01-10 02:32:16,680 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1387 transitions. Word has length 88 [2022-01-10 02:32:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:16,681 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1387 transitions. [2022-01-10 02:32:16,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 02:32:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1387 transitions. [2022-01-10 02:32:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 02:32:16,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:16,684 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 02:32:16,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:32:16,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1428941089, now seen corresponding path program 1 times [2022-01-10 02:32:16,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:16,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385619232] [2022-01-10 02:32:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:16,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:32:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 02:32:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:32:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 02:32:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:32:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 02:32:16,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:16,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385619232] [2022-01-10 02:32:16,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385619232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:32:16,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930855068] [2022-01-10 02:32:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:16,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:32:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:32:16,752 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 02:32:16,777 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 02:32:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:16,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:32:16,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:32:17,011 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 02:32:17,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:32:17,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930855068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:17,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:32:17,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-10 02:32:17,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506440491] [2022-01-10 02:32:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:17,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:32:17,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:17,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:32:17,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:32:17,013 INFO L87 Difference]: Start difference. First operand 1061 states and 1387 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 02:32:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:17,064 INFO L93 Difference]: Finished difference Result 1385 states and 1781 transitions. [2022-01-10 02:32:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:32:17,064 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 02:32:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:17,066 INFO L225 Difference]: With dead ends: 1385 [2022-01-10 02:32:17,066 INFO L226 Difference]: Without dead ends: 260 [2022-01-10 02:32:17,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:32:17,070 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 60 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:17,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1005 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:32:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-10 02:32:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-01-10 02:32:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 230 states have (on average 1.5608695652173914) internal successors, (359), 232 states have internal predecessors, (359), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 02:32:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 403 transitions. [2022-01-10 02:32:17,081 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 403 transitions. Word has length 103 [2022-01-10 02:32:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:17,081 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 403 transitions. [2022-01-10 02:32:17,082 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 02:32:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 403 transitions. [2022-01-10 02:32:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:17,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:17,085 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, 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 02:32:17,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 02:32:17,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 02:32:17,300 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1566264591, now seen corresponding path program 1 times [2022-01-10 02:32:17,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89872466] [2022-01-10 02:32:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:17,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:17,404 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 02:32:17,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:17,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89872466] [2022-01-10 02:32:17,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89872466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:17,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:17,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:32:17,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668241784] [2022-01-10 02:32:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:17,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:32:17,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:32:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:32:17,407 INFO L87 Difference]: Start difference. First operand 260 states and 403 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:18,099 INFO L93 Difference]: Finished difference Result 595 states and 937 transitions. [2022-01-10 02:32:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:32:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-01-10 02:32:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:18,102 INFO L225 Difference]: With dead ends: 595 [2022-01-10 02:32:18,102 INFO L226 Difference]: Without dead ends: 347 [2022-01-10 02:32:18,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:32:18,103 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 664 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:18,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 719 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:32:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-10 02:32:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 260. [2022-01-10 02:32:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 230 states have (on average 1.5565217391304347) internal successors, (358), 232 states have internal predecessors, (358), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 02:32:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 402 transitions. [2022-01-10 02:32:18,118 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 402 transitions. Word has length 124 [2022-01-10 02:32:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:18,118 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 402 transitions. [2022-01-10 02:32:18,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:32:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 402 transitions. [2022-01-10 02:32:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:18,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:18,120 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, 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 02:32:18,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:32:18,120 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1081339763, now seen corresponding path program 1 times [2022-01-10 02:32:18,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:18,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245355781] [2022-01-10 02:32:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:18,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:18,239 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 02:32:18,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245355781] [2022-01-10 02:32:18,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245355781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:18,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:32:18,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70154216] [2022-01-10 02:32:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:18,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:32:18,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:32:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:32:18,241 INFO L87 Difference]: Start difference. First operand 260 states and 402 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 02:32:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:19,707 INFO L93 Difference]: Finished difference Result 930 states and 1473 transitions. [2022-01-10 02:32:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:32:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:19,715 INFO L225 Difference]: With dead ends: 930 [2022-01-10 02:32:19,715 INFO L226 Difference]: Without dead ends: 686 [2022-01-10 02:32:19,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:32:19,717 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 994 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:19,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1141 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:32:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-01-10 02:32:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 511. [2022-01-10 02:32:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 458 states have (on average 1.5698689956331877) internal successors, (719), 461 states have internal predecessors, (719), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-01-10 02:32:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 798 transitions. [2022-01-10 02:32:19,747 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 798 transitions. Word has length 124 [2022-01-10 02:32:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:19,747 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 798 transitions. [2022-01-10 02:32:19,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 02:32:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 798 transitions. [2022-01-10 02:32:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:19,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:19,748 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, 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 02:32:19,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:32:19,749 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2098988151, now seen corresponding path program 1 times [2022-01-10 02:32:19,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:19,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121129808] [2022-01-10 02:32:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:19,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:19,855 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 02:32:19,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:19,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121129808] [2022-01-10 02:32:19,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121129808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:19,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:19,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:19,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87178872] [2022-01-10 02:32:19,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:19,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:19,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:19,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:19,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:19,857 INFO L87 Difference]: Start difference. First operand 511 states and 798 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:21,772 INFO L93 Difference]: Finished difference Result 1528 states and 2422 transitions. [2022-01-10 02:32:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:32:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:21,778 INFO L225 Difference]: With dead ends: 1528 [2022-01-10 02:32:21,778 INFO L226 Difference]: Without dead ends: 1033 [2022-01-10 02:32:21,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:32:21,780 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1001 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:21,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1993 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:32:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-10 02:32:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 745. [2022-01-10 02:32:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 669 states have (on average 1.5635276532137519) internal successors, (1046), 673 states have internal predecessors, (1046), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-01-10 02:32:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1159 transitions. [2022-01-10 02:32:21,844 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1159 transitions. Word has length 124 [2022-01-10 02:32:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:21,844 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1159 transitions. [2022-01-10 02:32:21,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1159 transitions. [2022-01-10 02:32:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:21,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:21,846 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, 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 02:32:21,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:32:21,846 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1980546677, now seen corresponding path program 1 times [2022-01-10 02:32:21,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:21,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417351570] [2022-01-10 02:32:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:21,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:21,975 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 02:32:21,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:21,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417351570] [2022-01-10 02:32:21,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417351570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:21,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:21,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:21,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495089245] [2022-01-10 02:32:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:21,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:21,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:21,977 INFO L87 Difference]: Start difference. First operand 745 states and 1159 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:23,792 INFO L93 Difference]: Finished difference Result 2409 states and 3811 transitions. [2022-01-10 02:32:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:32:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:23,801 INFO L225 Difference]: With dead ends: 2409 [2022-01-10 02:32:23,801 INFO L226 Difference]: Without dead ends: 1680 [2022-01-10 02:32:23,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:32:23,805 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1001 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:23,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1983 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 02:32:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2022-01-10 02:32:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1214. [2022-01-10 02:32:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1092 states have (on average 1.5576923076923077) internal successors, (1701), 1098 states have internal predecessors, (1701), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-01-10 02:32:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1886 transitions. [2022-01-10 02:32:23,883 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1886 transitions. Word has length 124 [2022-01-10 02:32:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1886 transitions. [2022-01-10 02:32:23,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1886 transitions. [2022-01-10 02:32:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:23,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:23,885 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, 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 02:32:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:32:23,885 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -591252663, now seen corresponding path program 1 times [2022-01-10 02:32:23,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:23,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885960931] [2022-01-10 02:32:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:23,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:23,984 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 02:32:23,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:23,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885960931] [2022-01-10 02:32:23,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885960931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:23,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:23,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:23,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495512859] [2022-01-10 02:32:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:23,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:23,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:23,986 INFO L87 Difference]: Start difference. First operand 1214 states and 1886 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:24,815 INFO L93 Difference]: Finished difference Result 2862 states and 4521 transitions. [2022-01-10 02:32:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:32:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:24,824 INFO L225 Difference]: With dead ends: 2862 [2022-01-10 02:32:24,825 INFO L226 Difference]: Without dead ends: 1664 [2022-01-10 02:32:24,829 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 02:32:24,830 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 877 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:24,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 902 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:32:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-01-10 02:32:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1214. [2022-01-10 02:32:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1092 states have (on average 1.5531135531135531) internal successors, (1696), 1098 states have internal predecessors, (1696), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-01-10 02:32:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1881 transitions. [2022-01-10 02:32:24,935 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1881 transitions. Word has length 124 [2022-01-10 02:32:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:24,935 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1881 transitions. [2022-01-10 02:32:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1881 transitions. [2022-01-10 02:32:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:24,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:24,937 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, 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 02:32:24,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:32:24,937 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:24,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1837005959, now seen corresponding path program 1 times [2022-01-10 02:32:24,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:24,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813987415] [2022-01-10 02:32:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:24,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:25,062 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 02:32:25,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:25,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813987415] [2022-01-10 02:32:25,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813987415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:25,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:25,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394572805] [2022-01-10 02:32:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:25,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:25,064 INFO L87 Difference]: Start difference. First operand 1214 states and 1881 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:26,792 INFO L93 Difference]: Finished difference Result 4097 states and 6434 transitions. [2022-01-10 02:32:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:32:26,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:26,806 INFO L225 Difference]: With dead ends: 4097 [2022-01-10 02:32:26,807 INFO L226 Difference]: Without dead ends: 2899 [2022-01-10 02:32:26,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:32:26,811 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 989 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:26,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 1969 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:32:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2022-01-10 02:32:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2163. [2022-01-10 02:32:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1949 states have (on average 1.5484864032837353) internal successors, (3018), 1959 states have internal predecessors, (3018), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-01-10 02:32:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3353 transitions. [2022-01-10 02:32:26,972 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3353 transitions. Word has length 124 [2022-01-10 02:32:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:26,973 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3353 transitions. [2022-01-10 02:32:26,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3353 transitions. [2022-01-10 02:32:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:26,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:26,975 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, 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 02:32:26,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:32:26,975 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash 529863561, now seen corresponding path program 1 times [2022-01-10 02:32:26,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259057872] [2022-01-10 02:32:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:26,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:27,073 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 02:32:27,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259057872] [2022-01-10 02:32:27,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259057872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:27,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:27,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549825154] [2022-01-10 02:32:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:27,075 INFO L87 Difference]: Start difference. First operand 2163 states and 3353 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:28,141 INFO L93 Difference]: Finished difference Result 5052 states and 7944 transitions. [2022-01-10 02:32:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:32:28,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:28,154 INFO L225 Difference]: With dead ends: 5052 [2022-01-10 02:32:28,154 INFO L226 Difference]: Without dead ends: 2905 [2022-01-10 02:32:28,161 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 02:32:28,161 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 723 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:28,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1058 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:32:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-01-10 02:32:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2163. [2022-01-10 02:32:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1949 states have (on average 1.543868650590046) internal successors, (3009), 1959 states have internal predecessors, (3009), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-01-10 02:32:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3344 transitions. [2022-01-10 02:32:28,317 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3344 transitions. Word has length 124 [2022-01-10 02:32:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:28,318 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3344 transitions. [2022-01-10 02:32:28,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3344 transitions. [2022-01-10 02:32:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:28,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:28,320 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, 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 02:32:28,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:32:28,320 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1867606969, now seen corresponding path program 1 times [2022-01-10 02:32:28,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:28,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559091691] [2022-01-10 02:32:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:28,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:28,428 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 02:32:28,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559091691] [2022-01-10 02:32:28,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559091691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:28,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:28,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739231885] [2022-01-10 02:32:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:28,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:28,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:28,431 INFO L87 Difference]: Start difference. First operand 2163 states and 3344 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:30,419 INFO L93 Difference]: Finished difference Result 7486 states and 11700 transitions. [2022-01-10 02:32:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:32:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:30,452 INFO L225 Difference]: With dead ends: 7486 [2022-01-10 02:32:30,452 INFO L226 Difference]: Without dead ends: 5339 [2022-01-10 02:32:30,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:32:30,459 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 981 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:30,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1958 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:32:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2022-01-10 02:32:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 4073. [2022-01-10 02:32:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 3675 states have (on average 1.5393197278911566) internal successors, (5657), 3693 states have internal predecessors, (5657), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-01-10 02:32:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 6310 transitions. [2022-01-10 02:32:30,734 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 6310 transitions. Word has length 124 [2022-01-10 02:32:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:30,734 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 6310 transitions. [2022-01-10 02:32:30,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 6310 transitions. [2022-01-10 02:32:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:30,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:30,738 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, 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 02:32:30,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:32:30,738 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:30,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash -836566071, now seen corresponding path program 1 times [2022-01-10 02:32:30,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522233515] [2022-01-10 02:32:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:30,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:30,834 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 02:32:30,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522233515] [2022-01-10 02:32:30,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522233515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:30,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:30,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:30,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392923926] [2022-01-10 02:32:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:30,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:30,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:30,836 INFO L87 Difference]: Start difference. First operand 4073 states and 6310 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:31,963 INFO L93 Difference]: Finished difference Result 9428 states and 14799 transitions. [2022-01-10 02:32:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:32:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:31,982 INFO L225 Difference]: With dead ends: 9428 [2022-01-10 02:32:31,983 INFO L226 Difference]: Without dead ends: 5371 [2022-01-10 02:32:31,992 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 02:32:31,993 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 720 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:31,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 1049 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:32:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2022-01-10 02:32:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4073. [2022-01-10 02:32:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 3675 states have (on average 1.5346938775510204) internal successors, (5640), 3693 states have internal predecessors, (5640), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-01-10 02:32:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 6293 transitions. [2022-01-10 02:32:32,269 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 6293 transitions. Word has length 124 [2022-01-10 02:32:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:32,269 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 6293 transitions. [2022-01-10 02:32:32,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 6293 transitions. [2022-01-10 02:32:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:32,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:32,274 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, 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 02:32:32,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:32:32,274 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1551997959, now seen corresponding path program 1 times [2022-01-10 02:32:32,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:32,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364601939] [2022-01-10 02:32:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:32,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:32,412 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 02:32:32,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364601939] [2022-01-10 02:32:32,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364601939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:32,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:32,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:32,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658166838] [2022-01-10 02:32:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:32,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:32,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:32,414 INFO L87 Difference]: Start difference. First operand 4073 states and 6293 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:34,950 INFO L93 Difference]: Finished difference Result 15784 states and 24570 transitions. [2022-01-10 02:32:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:35,027 INFO L225 Difference]: With dead ends: 15784 [2022-01-10 02:32:35,027 INFO L226 Difference]: Without dead ends: 11727 [2022-01-10 02:32:35,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:35,059 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1035 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:35,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 2041 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 02:32:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11727 states. [2022-01-10 02:32:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11727 to 7715. [2022-01-10 02:32:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7715 states, 6965 states have (on average 1.5270638908829863) internal successors, (10636), 6999 states have internal predecessors, (10636), 519 states have call successors, (519), 199 states have call predecessors, (519), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2022-01-10 02:32:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7715 states to 7715 states and 11947 transitions. [2022-01-10 02:32:35,687 INFO L78 Accepts]: Start accepts. Automaton has 7715 states and 11947 transitions. Word has length 124 [2022-01-10 02:32:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:35,687 INFO L470 AbstractCegarLoop]: Abstraction has 7715 states and 11947 transitions. [2022-01-10 02:32:35,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7715 states and 11947 transitions. [2022-01-10 02:32:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:35,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:35,693 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, 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 02:32:35,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:32:35,693 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1141898231, now seen corresponding path program 1 times [2022-01-10 02:32:35,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:35,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484896230] [2022-01-10 02:32:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:35,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:35,804 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 02:32:35,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:35,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484896230] [2022-01-10 02:32:35,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484896230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:35,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:35,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:35,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211700978] [2022-01-10 02:32:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:35,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:35,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:35,806 INFO L87 Difference]: Start difference. First operand 7715 states and 11947 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:39,032 INFO L93 Difference]: Finished difference Result 29856 states and 46594 transitions. [2022-01-10 02:32:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:39,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:39,097 INFO L225 Difference]: With dead ends: 29856 [2022-01-10 02:32:39,098 INFO L226 Difference]: Without dead ends: 22157 [2022-01-10 02:32:39,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:39,120 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1188 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:39,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 1930 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 02:32:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22157 states. [2022-01-10 02:32:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22157 to 15140. [2022-01-10 02:32:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15140 states, 13702 states have (on average 1.527222303313385) internal successors, (20926), 13768 states have internal predecessors, (20926), 983 states have call successors, (983), 391 states have call predecessors, (983), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2022-01-10 02:32:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15140 states to 15140 states and 23683 transitions. [2022-01-10 02:32:40,299 INFO L78 Accepts]: Start accepts. Automaton has 15140 states and 23683 transitions. Word has length 124 [2022-01-10 02:32:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:40,299 INFO L470 AbstractCegarLoop]: Abstraction has 15140 states and 23683 transitions. [2022-01-10 02:32:40,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 15140 states and 23683 transitions. [2022-01-10 02:32:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:40,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:40,309 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, 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 02:32:40,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:32:40,309 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2096337863, now seen corresponding path program 1 times [2022-01-10 02:32:40,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:40,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882391898] [2022-01-10 02:32:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:40,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:40,404 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 02:32:40,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:40,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882391898] [2022-01-10 02:32:40,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882391898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:40,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:40,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:40,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897886563] [2022-01-10 02:32:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:40,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:40,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:40,406 INFO L87 Difference]: Start difference. First operand 15140 states and 23683 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:45,495 INFO L93 Difference]: Finished difference Result 56893 states and 89764 transitions. [2022-01-10 02:32:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:45,651 INFO L225 Difference]: With dead ends: 56893 [2022-01-10 02:32:45,651 INFO L226 Difference]: Without dead ends: 41769 [2022-01-10 02:32:45,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:45,707 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 1162 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:45,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 1331 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 02:32:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41769 states. [2022-01-10 02:32:47,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41769 to 30022. [2022-01-10 02:32:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30022 states, 27240 states have (on average 1.529588839941263) internal successors, (41666), 27370 states have internal predecessors, (41666), 1879 states have call successors, (1879), 775 states have call predecessors, (1879), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2022-01-10 02:32:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30022 states to 30022 states and 47737 transitions. [2022-01-10 02:32:48,040 INFO L78 Accepts]: Start accepts. Automaton has 30022 states and 47737 transitions. Word has length 124 [2022-01-10 02:32:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:32:48,041 INFO L470 AbstractCegarLoop]: Abstraction has 30022 states and 47737 transitions. [2022-01-10 02:32:48,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 30022 states and 47737 transitions. [2022-01-10 02:32:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:32:48,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:32:48,057 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, 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 02:32:48,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:32:48,057 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:32:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:32:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 477362949, now seen corresponding path program 1 times [2022-01-10 02:32:48,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:32:48,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796176773] [2022-01-10 02:32:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:32:48,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:32:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:32:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:32:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:32:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:32:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:32:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:32:48,148 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 02:32:48,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:32:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796176773] [2022-01-10 02:32:48,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796176773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:32:48,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:32:48,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:32:48,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195402499] [2022-01-10 02:32:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:32:48,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:32:48,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:32:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:32:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:32:48,150 INFO L87 Difference]: Start difference. First operand 30022 states and 47737 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:32:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:32:56,304 INFO L93 Difference]: Finished difference Result 110813 states and 177708 transitions. [2022-01-10 02:32:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:32:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-01-10 02:32:56,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:32:56,643 INFO L225 Difference]: With dead ends: 110813 [2022-01-10 02:32:56,643 INFO L226 Difference]: Without dead ends: 80807 [2022-01-10 02:32:56,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:32:56,745 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1065 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:32:56,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 1916 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:32:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80807 states. [2022-01-10 02:33:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80807 to 59719. [2022-01-10 02:33:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59719 states, 54313 states have (on average 1.5319352641172463) internal successors, (83204), 54571 states have internal predecessors, (83204), 3607 states have call successors, (3607), 1543 states have call predecessors, (3607), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2022-01-10 02:33:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59719 states to 59719 states and 97233 transitions. [2022-01-10 02:33:01,810 INFO L78 Accepts]: Start accepts. Automaton has 59719 states and 97233 transitions. Word has length 124 [2022-01-10 02:33:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:01,810 INFO L470 AbstractCegarLoop]: Abstraction has 59719 states and 97233 transitions. [2022-01-10 02:33:01,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 02:33:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 59719 states and 97233 transitions. [2022-01-10 02:33:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 02:33:01,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:01,837 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, 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 02:33:01,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:33:01,837 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -406146041, now seen corresponding path program 1 times [2022-01-10 02:33:01,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:01,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881297580] [2022-01-10 02:33:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:01,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 02:33:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:33:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:33:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:01,934 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 02:33:01,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881297580] [2022-01-10 02:33:01,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881297580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:01,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:01,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:01,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281061270] [2022-01-10 02:33:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:01,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:01,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:01,936 INFO L87 Difference]: Start difference. First operand 59719 states and 97233 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)