/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/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:04:11,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:04:11,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:04:11,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:04:11,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:04:11,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:04:11,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:04:11,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:04:11,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:04:11,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:04:11,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:04:11,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:04:11,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:04:11,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:04:11,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:04:11,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:04:11,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:04:11,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:04:11,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:04:11,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:04:11,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:04:11,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:04:11,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:04:11,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:04:11,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:04:11,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:04:11,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:04:11,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:04:11,672 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 01:04:11,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:04:11,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:04:11,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:04:11,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:04:11,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:04:11,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:04:11,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:04:11,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:04:11,690 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:04:11,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:04:11,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:04:11,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:04:11,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:04:11,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:04:11,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:04:11,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:11,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:04:11,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:04:11,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:04:11,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:04:11,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:04:11,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:04:11,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:04:11,878 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:04:11,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2022-01-10 01:04:11,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d2f4cee/3bb3ee0dd0ec4a4186cf13a200a87653/FLAG4725575df [2022-01-10 01:04:12,352 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:04:12,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2022-01-10 01:04:12,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d2f4cee/3bb3ee0dd0ec4a4186cf13a200a87653/FLAG4725575df [2022-01-10 01:04:12,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d2f4cee/3bb3ee0dd0ec4a4186cf13a200a87653 [2022-01-10 01:04:12,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:04:12,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:04:12,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:12,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:04:12,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:04:12,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c1f24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12, skipping insertion in model container [2022-01-10 01:04:12,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:04:12,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:04:12,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-01-10 01:04:12,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:12,763 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:04:12,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-01-10 01:04:12,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:12,837 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:04:12,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12 WrapperNode [2022-01-10 01:04:12,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:12,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:12,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:04:12,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:04:12,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,907 INFO L137 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-01-10 01:04:12,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:12,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:04:12,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:04:12,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:04:12,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:04:12,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:04:12,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:04:12,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:04:12,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (1/1) ... [2022-01-10 01:04:12,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:12,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:12,988 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 01:04:13,004 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 01:04:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-01-10 01:04:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-01-10 01:04:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-01-10 01:04:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:04:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-01-10 01:04:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-01-10 01:04:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-01-10 01:04:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-01-10 01:04:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-01-10 01:04:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-01-10 01:04:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:04:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-01-10 01:04:13,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-01-10 01:04:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-01-10 01:04:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:04:13,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:04:13,172 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:04:13,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:04:13,579 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:04:13,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:04:13,586 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:04:13,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:13 BoogieIcfgContainer [2022-01-10 01:04:13,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:04:13,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:04:13,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:04:13,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:04:13,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:12" (1/3) ... [2022-01-10 01:04:13,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1493af90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:13, skipping insertion in model container [2022-01-10 01:04:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:12" (2/3) ... [2022-01-10 01:04:13,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1493af90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:13, skipping insertion in model container [2022-01-10 01:04:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:13" (3/3) ... [2022-01-10 01:04:13,596 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-01-10 01:04:13,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:04:13,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:04:13,641 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:04:13,648 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 01:04:13,648 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:04:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 94 states have internal predecessors, (123), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 01:04:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 01:04:13,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:13,689 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] [2022-01-10 01:04:13,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:13,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 710755723, now seen corresponding path program 1 times [2022-01-10 01:04:13,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462980460] [2022-01-10 01:04:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:13,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:14,130 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 01:04:14,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:14,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462980460] [2022-01-10 01:04:14,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462980460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:14,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:14,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:14,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025860008] [2022-01-10 01:04:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:14,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:14,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:14,165 INFO L87 Difference]: Start difference. First operand has 133 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 94 states have internal predecessors, (123), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:04:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:15,367 INFO L93 Difference]: Finished difference Result 327 states and 482 transitions. [2022-01-10 01:04:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:04:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-10 01:04:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:15,385 INFO L225 Difference]: With dead ends: 327 [2022-01-10 01:04:15,385 INFO L226 Difference]: Without dead ends: 176 [2022-01-10 01:04:15,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:04:15,396 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 147 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:15,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 913 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:04:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-10 01:04:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 134. [2022-01-10 01:04:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 97 states have internal predecessors, (125), 30 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 01:04:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 181 transitions. [2022-01-10 01:04:15,448 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 181 transitions. Word has length 20 [2022-01-10 01:04:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:15,449 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 181 transitions. [2022-01-10 01:04:15,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:04:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 181 transitions. [2022-01-10 01:04:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 01:04:15,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:15,453 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:15,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:04:15,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash -722138337, now seen corresponding path program 1 times [2022-01-10 01:04:15,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:15,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489765821] [2022-01-10 01:04:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:15,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:15,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:15,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489765821] [2022-01-10 01:04:15,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489765821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:15,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:15,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:04:15,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643641394] [2022-01-10 01:04:15,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:15,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:04:15,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:04:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:04:15,582 INFO L87 Difference]: Start difference. First operand 134 states and 181 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:16,120 INFO L93 Difference]: Finished difference Result 301 states and 437 transitions. [2022-01-10 01:04:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:04:16,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-01-10 01:04:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:16,125 INFO L225 Difference]: With dead ends: 301 [2022-01-10 01:04:16,125 INFO L226 Difference]: Without dead ends: 182 [2022-01-10 01:04:16,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:16,127 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 87 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:16,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 483 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:04:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-10 01:04:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 139. [2022-01-10 01:04:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.336734693877551) internal successors, (131), 101 states have internal predecessors, (131), 30 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 01:04:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2022-01-10 01:04:16,139 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 36 [2022-01-10 01:04:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:16,139 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2022-01-10 01:04:16,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2022-01-10 01:04:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 01:04:16,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:16,141 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:16,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:04:16,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -662024687, now seen corresponding path program 1 times [2022-01-10 01:04:16,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816941588] [2022-01-10 01:04:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:16,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:16,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:16,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816941588] [2022-01-10 01:04:16,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816941588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:16,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:16,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:16,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991457876] [2022-01-10 01:04:16,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:16,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:16,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:16,298 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:17,103 INFO L93 Difference]: Finished difference Result 347 states and 511 transitions. [2022-01-10 01:04:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:04:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-01-10 01:04:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:17,105 INFO L225 Difference]: With dead ends: 347 [2022-01-10 01:04:17,105 INFO L226 Difference]: Without dead ends: 223 [2022-01-10 01:04:17,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:04:17,107 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 148 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:17,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1078 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-10 01:04:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 209. [2022-01-10 01:04:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 153 states have internal predecessors, (190), 40 states have call successors, (40), 13 states have call predecessors, (40), 20 states have return successors, (63), 42 states have call predecessors, (63), 36 states have call successors, (63) [2022-01-10 01:04:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 293 transitions. [2022-01-10 01:04:17,123 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 293 transitions. Word has length 37 [2022-01-10 01:04:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:17,123 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 293 transitions. [2022-01-10 01:04:17,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 293 transitions. [2022-01-10 01:04:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 01:04:17,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:17,125 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:17,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:04:17,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash -403859249, now seen corresponding path program 1 times [2022-01-10 01:04:17,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:17,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596115380] [2022-01-10 01:04:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:17,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:17,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596115380] [2022-01-10 01:04:17,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596115380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:17,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077531843] [2022-01-10 01:04:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:17,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:17,388 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 01:04:17,391 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 01:04:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:17,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 01:04:17,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:17,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:17,832 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-01-10 01:04:17,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-01-10 01:04:17,902 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 01:04:17,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-01-10 01:04:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:17,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:20,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2022-01-10 01:04:22,031 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset) ~sys_state_s~0~AS_IDLE))) is different from false [2022-01-10 01:04:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077531843] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:24,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:04:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 11] total 25 [2022-01-10 01:04:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521614513] [2022-01-10 01:04:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=417, Unknown=3, NotChecked=86, Total=600 [2022-01-10 01:04:24,797 INFO L87 Difference]: Start difference. First operand 209 states and 293 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:33,318 WARN L228 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 01:04:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:33,407 INFO L93 Difference]: Finished difference Result 441 states and 662 transitions. [2022-01-10 01:04:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 01:04:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-01-10 01:04:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:33,409 INFO L225 Difference]: With dead ends: 441 [2022-01-10 01:04:33,409 INFO L226 Difference]: Without dead ends: 247 [2022-01-10 01:04:33,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=115, Invalid=591, Unknown=4, NotChecked=102, Total=812 [2022-01-10 01:04:33,411 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 35 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:33,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1050 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 200 Unchecked, 0.1s Time] [2022-01-10 01:04:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-01-10 01:04:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 238. [2022-01-10 01:04:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 170 states have (on average 1.2823529411764707) internal successors, (218), 173 states have internal predecessors, (218), 45 states have call successors, (45), 15 states have call predecessors, (45), 22 states have return successors, (83), 49 states have call predecessors, (83), 41 states have call successors, (83) [2022-01-10 01:04:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 346 transitions. [2022-01-10 01:04:33,438 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 346 transitions. Word has length 37 [2022-01-10 01:04:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:33,439 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 346 transitions. [2022-01-10 01:04:33,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 346 transitions. [2022-01-10 01:04:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 01:04:33,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:33,440 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:33,460 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 01:04:33,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:33,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1400931602, now seen corresponding path program 1 times [2022-01-10 01:04:33,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:33,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070920501] [2022-01-10 01:04:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:33,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:33,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:33,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070920501] [2022-01-10 01:04:33,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070920501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:33,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:33,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:33,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217710157] [2022-01-10 01:04:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:33,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:33,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:33,782 INFO L87 Difference]: Start difference. First operand 238 states and 346 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:35,108 INFO L93 Difference]: Finished difference Result 639 states and 997 transitions. [2022-01-10 01:04:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 01:04:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-01-10 01:04:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:35,114 INFO L225 Difference]: With dead ends: 639 [2022-01-10 01:04:35,114 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 01:04:35,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:04:35,117 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 396 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:35,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 908 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:04:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 01:04:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 369. [2022-01-10 01:04:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 266 states have internal predecessors, (338), 60 states have call successors, (60), 22 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-01-10 01:04:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 553 transitions. [2022-01-10 01:04:35,145 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 553 transitions. Word has length 37 [2022-01-10 01:04:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:35,145 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 553 transitions. [2022-01-10 01:04:35,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 553 transitions. [2022-01-10 01:04:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 01:04:35,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:35,147 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:35,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:04:35,147 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1781044853, now seen corresponding path program 1 times [2022-01-10 01:04:35,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:35,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522859324] [2022-01-10 01:04:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:35,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:04:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:04:35,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:35,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522859324] [2022-01-10 01:04:35,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522859324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:35,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:35,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:04:35,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043460900] [2022-01-10 01:04:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:35,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:35,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:35,231 INFO L87 Difference]: Start difference. First operand 369 states and 553 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:35,988 INFO L93 Difference]: Finished difference Result 752 states and 1234 transitions. [2022-01-10 01:04:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:04:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-01-10 01:04:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:35,991 INFO L225 Difference]: With dead ends: 752 [2022-01-10 01:04:35,992 INFO L226 Difference]: Without dead ends: 398 [2022-01-10 01:04:35,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:04:35,994 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 113 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:35,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 784 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-10 01:04:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 371. [2022-01-10 01:04:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 269 states have (on average 1.2565055762081785) internal successors, (338), 267 states have internal predecessors, (338), 60 states have call successors, (60), 23 states have call predecessors, (60), 41 states have return successors, (155), 80 states have call predecessors, (155), 56 states have call successors, (155) [2022-01-10 01:04:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 553 transitions. [2022-01-10 01:04:36,018 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 553 transitions. Word has length 39 [2022-01-10 01:04:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:36,018 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 553 transitions. [2022-01-10 01:04:36,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 553 transitions. [2022-01-10 01:04:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 01:04:36,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:36,022 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:36,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:04:36,022 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash 610766460, now seen corresponding path program 1 times [2022-01-10 01:04:36,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:36,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383141050] [2022-01-10 01:04:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:36,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 01:04:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:04:36,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:36,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383141050] [2022-01-10 01:04:36,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383141050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:36,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:36,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:36,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961769334] [2022-01-10 01:04:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:36,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:36,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:36,167 INFO L87 Difference]: Start difference. First operand 371 states and 553 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:36,625 INFO L93 Difference]: Finished difference Result 757 states and 1126 transitions. [2022-01-10 01:04:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-01-10 01:04:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:36,628 INFO L225 Difference]: With dead ends: 757 [2022-01-10 01:04:36,628 INFO L226 Difference]: Without dead ends: 392 [2022-01-10 01:04:36,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:04:36,630 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 285 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:36,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 404 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:04:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-10 01:04:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 369. [2022-01-10 01:04:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 268 states have (on average 1.25) internal successors, (335), 264 states have internal predecessors, (335), 59 states have call successors, (59), 24 states have call predecessors, (59), 41 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-01-10 01:04:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 550 transitions. [2022-01-10 01:04:36,649 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 550 transitions. Word has length 40 [2022-01-10 01:04:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:36,649 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 550 transitions. [2022-01-10 01:04:36,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 550 transitions. [2022-01-10 01:04:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 01:04:36,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:36,650 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:04:36,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:04:36,650 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 41137942, now seen corresponding path program 1 times [2022-01-10 01:04:36,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065337463] [2022-01-10 01:04:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:36,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-10 01:04:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:36,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:36,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065337463] [2022-01-10 01:04:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065337463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:36,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:36,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:04:36,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168832270] [2022-01-10 01:04:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:36,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:04:36,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:04:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:04:36,751 INFO L87 Difference]: Start difference. First operand 369 states and 550 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:37,242 INFO L93 Difference]: Finished difference Result 757 states and 1249 transitions. [2022-01-10 01:04:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:04:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2022-01-10 01:04:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:37,245 INFO L225 Difference]: With dead ends: 757 [2022-01-10 01:04:37,245 INFO L226 Difference]: Without dead ends: 403 [2022-01-10 01:04:37,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:37,247 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 92 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:37,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 461 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:04:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-10 01:04:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 381. [2022-01-10 01:04:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 277 states have (on average 1.256317689530686) internal successors, (348), 274 states have internal predecessors, (348), 59 states have call successors, (59), 26 states have call predecessors, (59), 44 states have return successors, (156), 80 states have call predecessors, (156), 57 states have call successors, (156) [2022-01-10 01:04:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 563 transitions. [2022-01-10 01:04:37,265 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 563 transitions. Word has length 54 [2022-01-10 01:04:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:37,267 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 563 transitions. [2022-01-10 01:04:37,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 563 transitions. [2022-01-10 01:04:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:04:37,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:37,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:37,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:04:37,269 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1496971800, now seen corresponding path program 1 times [2022-01-10 01:04:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466928190] [2022-01-10 01:04:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:37,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-10 01:04:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:37,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:37,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466928190] [2022-01-10 01:04:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466928190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:37,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:37,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:04:37,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806687211] [2022-01-10 01:04:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:37,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:37,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:37,434 INFO L87 Difference]: Start difference. First operand 381 states and 563 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:38,275 INFO L93 Difference]: Finished difference Result 904 states and 1462 transitions. [2022-01-10 01:04:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:04:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-01-10 01:04:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:38,280 INFO L225 Difference]: With dead ends: 904 [2022-01-10 01:04:38,280 INFO L226 Difference]: Without dead ends: 538 [2022-01-10 01:04:38,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-01-10 01:04:38,284 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 254 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:38,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1014 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-10 01:04:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 490. [2022-01-10 01:04:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 361 states have (on average 1.2326869806094183) internal successors, (445), 351 states have internal predecessors, (445), 67 states have call successors, (67), 30 states have call predecessors, (67), 61 states have return successors, (223), 108 states have call predecessors, (223), 65 states have call successors, (223) [2022-01-10 01:04:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 735 transitions. [2022-01-10 01:04:38,307 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 735 transitions. Word has length 55 [2022-01-10 01:04:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:38,307 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 735 transitions. [2022-01-10 01:04:38,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 735 transitions. [2022-01-10 01:04:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:04:38,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:38,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:38,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:04:38,309 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 10580009, now seen corresponding path program 1 times [2022-01-10 01:04:38,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445306429] [2022-01-10 01:04:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-10 01:04:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:04:38,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:38,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445306429] [2022-01-10 01:04:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445306429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:38,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:38,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798630466] [2022-01-10 01:04:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:38,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:38,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:38,443 INFO L87 Difference]: Start difference. First operand 490 states and 735 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:39,735 INFO L93 Difference]: Finished difference Result 1126 states and 1955 transitions. [2022-01-10 01:04:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 01:04:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-01-10 01:04:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:39,740 INFO L225 Difference]: With dead ends: 1126 [2022-01-10 01:04:39,741 INFO L226 Difference]: Without dead ends: 647 [2022-01-10 01:04:39,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-01-10 01:04:39,744 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 356 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:39,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 864 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:04:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-01-10 01:04:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 587. [2022-01-10 01:04:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 439 states have (on average 1.234624145785877) internal successors, (542), 421 states have internal predecessors, (542), 73 states have call successors, (73), 36 states have call predecessors, (73), 74 states have return successors, (319), 129 states have call predecessors, (319), 71 states have call successors, (319) [2022-01-10 01:04:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 934 transitions. [2022-01-10 01:04:39,772 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 934 transitions. Word has length 55 [2022-01-10 01:04:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:39,772 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 934 transitions. [2022-01-10 01:04:39,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 934 transitions. [2022-01-10 01:04:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:04:39,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:39,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:39,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:04:39,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash 571888817, now seen corresponding path program 1 times [2022-01-10 01:04:39,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:39,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544093632] [2022-01-10 01:04:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:39,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-10 01:04:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:39,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:39,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544093632] [2022-01-10 01:04:39,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544093632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:39,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:39,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:04:39,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171705361] [2022-01-10 01:04:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:39,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:39,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:39,881 INFO L87 Difference]: Start difference. First operand 587 states and 934 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:40,877 INFO L93 Difference]: Finished difference Result 1512 states and 2758 transitions. [2022-01-10 01:04:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:04:40,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-01-10 01:04:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:40,883 INFO L225 Difference]: With dead ends: 1512 [2022-01-10 01:04:40,883 INFO L226 Difference]: Without dead ends: 944 [2022-01-10 01:04:40,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:04:40,887 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 207 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:40,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1126 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:04:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-01-10 01:04:40,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 894. [2022-01-10 01:04:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 675 states have (on average 1.2014814814814814) internal successors, (811), 633 states have internal predecessors, (811), 94 states have call successors, (94), 51 states have call predecessors, (94), 124 states have return successors, (581), 209 states have call predecessors, (581), 92 states have call successors, (581) [2022-01-10 01:04:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1486 transitions. [2022-01-10 01:04:40,930 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1486 transitions. Word has length 56 [2022-01-10 01:04:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:40,930 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1486 transitions. [2022-01-10 01:04:40,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1486 transitions. [2022-01-10 01:04:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:04:40,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:40,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 01:04:40,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:04:40,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1377840752, now seen corresponding path program 1 times [2022-01-10 01:04:40,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:40,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620606131] [2022-01-10 01:04:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:40,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-10 01:04:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 01:04:41,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620606131] [2022-01-10 01:04:41,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620606131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:41,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:41,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:41,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472649402] [2022-01-10 01:04:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:41,048 INFO L87 Difference]: Start difference. First operand 894 states and 1486 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:41,853 INFO L93 Difference]: Finished difference Result 1880 states and 3579 transitions. [2022-01-10 01:04:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:04:41,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-01-10 01:04:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:41,860 INFO L225 Difference]: With dead ends: 1880 [2022-01-10 01:04:41,860 INFO L226 Difference]: Without dead ends: 1005 [2022-01-10 01:04:41,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:04:41,867 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 167 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:41,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 971 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-01-10 01:04:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 948. [2022-01-10 01:04:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 715 states have (on average 1.2) internal successors, (858), 676 states have internal predecessors, (858), 99 states have call successors, (99), 53 states have call predecessors, (99), 133 states have return successors, (589), 218 states have call predecessors, (589), 97 states have call successors, (589) [2022-01-10 01:04:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1546 transitions. [2022-01-10 01:04:41,939 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1546 transitions. Word has length 56 [2022-01-10 01:04:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:41,940 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1546 transitions. [2022-01-10 01:04:41,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1546 transitions. [2022-01-10 01:04:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:04:41,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:41,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:41,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:04:41,942 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 509803041, now seen corresponding path program 1 times [2022-01-10 01:04:41,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:41,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819041581] [2022-01-10 01:04:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:41,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 01:04:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 01:04:42,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:42,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819041581] [2022-01-10 01:04:42,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819041581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:42,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:42,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:04:42,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68111614] [2022-01-10 01:04:42,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:42,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:42,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:42,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:42,048 INFO L87 Difference]: Start difference. First operand 948 states and 1546 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:42,764 INFO L93 Difference]: Finished difference Result 1982 states and 3788 transitions. [2022-01-10 01:04:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:04:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-01-10 01:04:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:42,771 INFO L225 Difference]: With dead ends: 1982 [2022-01-10 01:04:42,771 INFO L226 Difference]: Without dead ends: 1053 [2022-01-10 01:04:42,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:04:42,778 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 148 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:42,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 846 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:04:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-01-10 01:04:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1020. [2022-01-10 01:04:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 777 states have (on average 1.2072072072072073) internal successors, (938), 738 states have internal predecessors, (938), 105 states have call successors, (105), 58 states have call predecessors, (105), 137 states have return successors, (659), 223 states have call predecessors, (659), 103 states have call successors, (659) [2022-01-10 01:04:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1702 transitions. [2022-01-10 01:04:42,847 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1702 transitions. Word has length 57 [2022-01-10 01:04:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:42,847 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1702 transitions. [2022-01-10 01:04:42,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1702 transitions. [2022-01-10 01:04:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:04:42,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:42,848 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:42,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:04:42,848 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1016973506, now seen corresponding path program 1 times [2022-01-10 01:04:42,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:42,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251379968] [2022-01-10 01:04:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:42,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:42,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:42,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251379968] [2022-01-10 01:04:42,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251379968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:42,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:42,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:04:42,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939966894] [2022-01-10 01:04:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:42,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:42,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:42,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:42,973 INFO L87 Difference]: Start difference. First operand 1020 states and 1702 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:43,892 INFO L93 Difference]: Finished difference Result 2065 states and 3941 transitions. [2022-01-10 01:04:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-01-10 01:04:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:43,902 INFO L225 Difference]: With dead ends: 2065 [2022-01-10 01:04:43,902 INFO L226 Difference]: Without dead ends: 1064 [2022-01-10 01:04:43,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:04:43,910 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 141 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:43,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 818 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:04:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-10 01:04:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1027. [2022-01-10 01:04:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 783 states have (on average 1.2081736909323115) internal successors, (946), 744 states have internal predecessors, (946), 105 states have call successors, (105), 59 states have call predecessors, (105), 138 states have return successors, (659), 223 states have call predecessors, (659), 103 states have call successors, (659) [2022-01-10 01:04:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1710 transitions. [2022-01-10 01:04:43,984 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1710 transitions. Word has length 57 [2022-01-10 01:04:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:43,984 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1710 transitions. [2022-01-10 01:04:43,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1710 transitions. [2022-01-10 01:04:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:04:43,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:43,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 01:04:43,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:04:43,986 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -742213892, now seen corresponding path program 1 times [2022-01-10 01:04:43,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:43,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125814215] [2022-01-10 01:04:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:43,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:04:44,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:44,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125814215] [2022-01-10 01:04:44,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125814215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:44,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:44,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:44,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78278858] [2022-01-10 01:04:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:44,119 INFO L87 Difference]: Start difference. First operand 1027 states and 1710 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:44,972 INFO L93 Difference]: Finished difference Result 2137 states and 4102 transitions. [2022-01-10 01:04:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:04:44,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2022-01-10 01:04:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:44,997 INFO L225 Difference]: With dead ends: 2137 [2022-01-10 01:04:44,997 INFO L226 Difference]: Without dead ends: 1129 [2022-01-10 01:04:45,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:04:45,006 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 126 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:45,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1104 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-01-10 01:04:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1095. [2022-01-10 01:04:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 834 states have (on average 1.2050359712230216) internal successors, (1005), 796 states have internal predecessors, (1005), 111 states have call successors, (111), 61 states have call predecessors, (111), 149 states have return successors, (709), 237 states have call predecessors, (709), 109 states have call successors, (709) [2022-01-10 01:04:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1825 transitions. [2022-01-10 01:04:45,095 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1825 transitions. Word has length 57 [2022-01-10 01:04:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:45,095 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 1825 transitions. [2022-01-10 01:04:45,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:04:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1825 transitions. [2022-01-10 01:04:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 01:04:45,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:45,098 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 01:04:45,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:04:45,100 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:45,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1983686761, now seen corresponding path program 1 times [2022-01-10 01:04:45,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:45,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986659700] [2022-01-10 01:04:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:45,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 01:04:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:04:45,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:45,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986659700] [2022-01-10 01:04:45,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986659700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:45,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:45,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:04:45,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746947947] [2022-01-10 01:04:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:04:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:04:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:04:45,205 INFO L87 Difference]: Start difference. First operand 1095 states and 1825 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:04:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:45,667 INFO L93 Difference]: Finished difference Result 2223 states and 4349 transitions. [2022-01-10 01:04:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:04:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-01-10 01:04:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:45,675 INFO L225 Difference]: With dead ends: 2223 [2022-01-10 01:04:45,676 INFO L226 Difference]: Without dead ends: 1147 [2022-01-10 01:04:45,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:04:45,683 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:45,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 596 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:04:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-01-10 01:04:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1099. [2022-01-10 01:04:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 837 states have (on average 1.2043010752688172) internal successors, (1008), 799 states have internal predecessors, (1008), 111 states have call successors, (111), 61 states have call predecessors, (111), 150 states have return successors, (712), 238 states have call predecessors, (712), 109 states have call successors, (712) [2022-01-10 01:04:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1831 transitions. [2022-01-10 01:04:45,731 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1831 transitions. Word has length 61 [2022-01-10 01:04:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:45,732 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1831 transitions. [2022-01-10 01:04:45,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:04:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1831 transitions. [2022-01-10 01:04:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 01:04:45,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:45,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:45,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:04:45,744 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash -49523645, now seen corresponding path program 1 times [2022-01-10 01:04:45,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:45,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141713871] [2022-01-10 01:04:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:45,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:04:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 01:04:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:04:45,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141713871] [2022-01-10 01:04:45,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141713871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:45,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:45,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:04:45,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334075817] [2022-01-10 01:04:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:45,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:04:45,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:04:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:04:45,854 INFO L87 Difference]: Start difference. First operand 1099 states and 1831 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:04:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:46,384 INFO L93 Difference]: Finished difference Result 2229 states and 4357 transitions. [2022-01-10 01:04:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:04:46,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2022-01-10 01:04:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:46,392 INFO L225 Difference]: With dead ends: 2229 [2022-01-10 01:04:46,392 INFO L226 Difference]: Without dead ends: 1149 [2022-01-10 01:04:46,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:04:46,399 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 73 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:46,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 633 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:04:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-01-10 01:04:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1101. [2022-01-10 01:04:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 839 states have (on average 1.203814064362336) internal successors, (1010), 800 states have internal predecessors, (1010), 111 states have call successors, (111), 61 states have call predecessors, (111), 150 states have return successors, (712), 239 states have call predecessors, (712), 109 states have call successors, (712) [2022-01-10 01:04:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1833 transitions. [2022-01-10 01:04:46,449 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1833 transitions. Word has length 62 [2022-01-10 01:04:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:46,449 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1833 transitions. [2022-01-10 01:04:46,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:04:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1833 transitions. [2022-01-10 01:04:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 01:04:46,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:46,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:46,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:04:46,451 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1696308308, now seen corresponding path program 1 times [2022-01-10 01:04:46,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:46,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756061652] [2022-01-10 01:04:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:46,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 01:04:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:04:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:04:46,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756061652] [2022-01-10 01:04:46,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756061652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:46,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:46,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:04:46,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921827726] [2022-01-10 01:04:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:46,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:04:46,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:04:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:04:46,582 INFO L87 Difference]: Start difference. First operand 1101 states and 1833 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:47,069 INFO L93 Difference]: Finished difference Result 2222 states and 4236 transitions. [2022-01-10 01:04:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2022-01-10 01:04:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:47,076 INFO L225 Difference]: With dead ends: 2222 [2022-01-10 01:04:47,076 INFO L226 Difference]: Without dead ends: 1128 [2022-01-10 01:04:47,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:04:47,081 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 84 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:47,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 483 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:04:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-01-10 01:04:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1079. [2022-01-10 01:04:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 825 states have (on average 1.1854545454545455) internal successors, (978), 784 states have internal predecessors, (978), 104 states have call successors, (104), 55 states have call predecessors, (104), 149 states have return successors, (704), 239 states have call predecessors, (704), 102 states have call successors, (704) [2022-01-10 01:04:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1786 transitions. [2022-01-10 01:04:47,130 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1786 transitions. Word has length 67 [2022-01-10 01:04:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:47,130 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1786 transitions. [2022-01-10 01:04:47,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1786 transitions. [2022-01-10 01:04:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 01:04:47,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:47,132 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:47,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:04:47,132 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:47,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash -746636842, now seen corresponding path program 1 times [2022-01-10 01:04:47,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:47,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966112] [2022-01-10 01:04:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:47,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 01:04:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:04:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:47,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:47,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966112] [2022-01-10 01:04:47,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:47,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:47,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466492413] [2022-01-10 01:04:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:47,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:47,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:47,294 INFO L87 Difference]: Start difference. First operand 1079 states and 1786 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:48,123 INFO L93 Difference]: Finished difference Result 2291 states and 4670 transitions. [2022-01-10 01:04:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:04:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2022-01-10 01:04:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:48,133 INFO L225 Difference]: With dead ends: 2291 [2022-01-10 01:04:48,133 INFO L226 Difference]: Without dead ends: 1228 [2022-01-10 01:04:48,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:04:48,138 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 181 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:48,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 837 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:04:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-01-10 01:04:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1196. [2022-01-10 01:04:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 914 states have (on average 1.1903719912472648) internal successors, (1088), 879 states have internal predecessors, (1088), 120 states have call successors, (120), 62 states have call predecessors, (120), 161 states have return successors, (926), 254 states have call predecessors, (926), 118 states have call successors, (926) [2022-01-10 01:04:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 2134 transitions. [2022-01-10 01:04:48,209 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 2134 transitions. Word has length 68 [2022-01-10 01:04:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:48,209 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 2134 transitions. [2022-01-10 01:04:48,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 2134 transitions. [2022-01-10 01:04:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 01:04:48,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:48,211 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:48,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:04:48,212 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1486942597, now seen corresponding path program 1 times [2022-01-10 01:04:48,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:48,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074067956] [2022-01-10 01:04:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:48,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 01:04:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:04:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:04:48,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:48,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074067956] [2022-01-10 01:04:48,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074067956] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:48,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165279915] [2022-01-10 01:04:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:48,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:48,368 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 01:04:48,369 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 01:04:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:48,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 01:04:48,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:48,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 01:04:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:04:48,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:48,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 01:04:48,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 01:04:48,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 01:04:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:04:48,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165279915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:48,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:48,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2022-01-10 01:04:48,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208232310] [2022-01-10 01:04:48,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:48,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:04:48,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:04:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:04:48,993 INFO L87 Difference]: Start difference. First operand 1196 states and 2134 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:04:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:50,168 INFO L93 Difference]: Finished difference Result 2618 states and 5502 transitions. [2022-01-10 01:04:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-01-10 01:04:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:50,178 INFO L225 Difference]: With dead ends: 2618 [2022-01-10 01:04:50,179 INFO L226 Difference]: Without dead ends: 1438 [2022-01-10 01:04:50,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:04:50,185 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 184 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:50,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1171 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:04:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-10 01:04:50,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1377. [2022-01-10 01:04:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1053 states have (on average 1.1690408357075024) internal successors, (1231), 999 states have internal predecessors, (1231), 126 states have call successors, (126), 64 states have call predecessors, (126), 197 states have return successors, (1157), 313 states have call predecessors, (1157), 124 states have call successors, (1157) [2022-01-10 01:04:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2514 transitions. [2022-01-10 01:04:50,253 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2514 transitions. Word has length 68 [2022-01-10 01:04:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:50,254 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 2514 transitions. [2022-01-10 01:04:50,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:04:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2514 transitions. [2022-01-10 01:04:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 01:04:50,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:50,256 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:50,276 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 01:04:50,467 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,SelfDestructingSolverStorable19 [2022-01-10 01:04:50,468 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:50,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1901707159, now seen corresponding path program 1 times [2022-01-10 01:04:50,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793789740] [2022-01-10 01:04:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:50,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:04:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 01:04:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:04:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:50,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:50,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793789740] [2022-01-10 01:04:50,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793789740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:50,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:50,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:04:50,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169904279] [2022-01-10 01:04:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:50,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:04:50,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:04:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:04:50,623 INFO L87 Difference]: Start difference. First operand 1377 states and 2514 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:51,699 INFO L93 Difference]: Finished difference Result 2863 states and 6291 transitions. [2022-01-10 01:04:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:04:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2022-01-10 01:04:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:51,710 INFO L225 Difference]: With dead ends: 2863 [2022-01-10 01:04:51,710 INFO L226 Difference]: Without dead ends: 1502 [2022-01-10 01:04:51,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:04:51,719 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 121 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:51,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1108 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:04:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-01-10 01:04:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1459. [2022-01-10 01:04:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1114 states have (on average 1.166068222621185) internal successors, (1299), 1062 states have internal predecessors, (1299), 133 states have call successors, (133), 66 states have call predecessors, (133), 211 states have return successors, (1241), 330 states have call predecessors, (1241), 131 states have call successors, (1241) [2022-01-10 01:04:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2673 transitions. [2022-01-10 01:04:51,846 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2673 transitions. Word has length 69 [2022-01-10 01:04:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:51,846 INFO L470 AbstractCegarLoop]: Abstraction has 1459 states and 2673 transitions. [2022-01-10 01:04:51,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:04:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2673 transitions. [2022-01-10 01:04:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 01:04:51,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:51,850 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-01-10 01:04:51,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:04:51,851 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1829986424, now seen corresponding path program 1 times [2022-01-10 01:04:51,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:51,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075940094] [2022-01-10 01:04:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:51,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-10 01:04:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 01:04:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 01:04:51,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075940094] [2022-01-10 01:04:51,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075940094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13211679] [2022-01-10 01:04:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:51,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:51,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:51,984 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 01:04:51,985 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 01:04:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:52,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 01:04:52,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:52,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:52,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-01-10 01:04:52,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 01:04:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:04:52,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 01:04:52,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13211679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:52,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 01:04:52,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-01-10 01:04:52,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958865134] [2022-01-10 01:04:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:52,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:52,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:04:52,473 INFO L87 Difference]: Start difference. First operand 1459 states and 2673 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 01:04:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:53,561 INFO L93 Difference]: Finished difference Result 3218 states and 7166 transitions. [2022-01-10 01:04:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 01:04:53,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-01-10 01:04:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:53,576 INFO L225 Difference]: With dead ends: 3218 [2022-01-10 01:04:53,576 INFO L226 Difference]: Without dead ends: 1758 [2022-01-10 01:04:53,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2022-01-10 01:04:53,586 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 206 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:53,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 906 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:04:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-01-10 01:04:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1686. [2022-01-10 01:04:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1296 states have (on average 1.1404320987654322) internal successors, (1478), 1226 states have internal predecessors, (1478), 128 states have call successors, (128), 66 states have call predecessors, (128), 261 states have return successors, (1643), 393 states have call predecessors, (1643), 126 states have call successors, (1643) [2022-01-10 01:04:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 3249 transitions. [2022-01-10 01:04:53,708 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 3249 transitions. Word has length 75 [2022-01-10 01:04:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:53,708 INFO L470 AbstractCegarLoop]: Abstraction has 1686 states and 3249 transitions. [2022-01-10 01:04:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 01:04:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 3249 transitions. [2022-01-10 01:04:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 01:04:53,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:53,714 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:53,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:53,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:53,927 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1064575945, now seen corresponding path program 1 times [2022-01-10 01:04:53,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:53,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147178221] [2022-01-10 01:04:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:53,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-10 01:04:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:04:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:04:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 01:04:54,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:54,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147178221] [2022-01-10 01:04:54,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147178221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:54,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095436600] [2022-01-10 01:04:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:54,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:54,135 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 01:04:54,136 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 01:04:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:54,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 01:04:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:54,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-01-10 01:04:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 01:04:54,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:54,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-01-10 01:04:54,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-01-10 01:04:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 01:04:55,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095436600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:55,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:55,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 11 [2022-01-10 01:04:55,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811413641] [2022-01-10 01:04:55,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:55,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 01:04:55,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 01:04:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:04:55,046 INFO L87 Difference]: Start difference. First operand 1686 states and 3249 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:04:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:56,136 INFO L93 Difference]: Finished difference Result 4183 states and 10770 transitions. [2022-01-10 01:04:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:04:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 95 [2022-01-10 01:04:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:56,162 INFO L225 Difference]: With dead ends: 4183 [2022-01-10 01:04:56,162 INFO L226 Difference]: Without dead ends: 2513 [2022-01-10 01:04:56,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:04:56,175 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 389 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:56,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 855 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:04:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-01-10 01:04:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2416. [2022-01-10 01:04:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1869 states have (on average 1.1219903691813804) internal successors, (2097), 1729 states have internal predecessors, (2097), 163 states have call successors, (163), 86 states have call predecessors, (163), 383 states have return successors, (3164), 600 states have call predecessors, (3164), 161 states have call successors, (3164) [2022-01-10 01:04:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 5424 transitions. [2022-01-10 01:04:56,338 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 5424 transitions. Word has length 95 [2022-01-10 01:04:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:56,339 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 5424 transitions. [2022-01-10 01:04:56,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:04:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 5424 transitions. [2022-01-10 01:04:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:04:56,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:56,344 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:56,371 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 01:04:56,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:56,557 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2006107724, now seen corresponding path program 1 times [2022-01-10 01:04:56,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:56,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868580891] [2022-01-10 01:04:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:56,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 01:04:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:04:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:04:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:04:56,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868580891] [2022-01-10 01:04:56,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868580891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411953362] [2022-01-10 01:04:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:56,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:56,765 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 01:04:56,791 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 01:04:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:57,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 01:04:57,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:57,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-01-10 01:04:57,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 01:04:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:04:57,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:57,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-01-10 01:04:57,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-01-10 01:04:57,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-01-10 01:04:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:04:57,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411953362] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:57,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:57,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2022-01-10 01:04:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371568886] [2022-01-10 01:04:57,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:57,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 01:04:57,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:57,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 01:04:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:04:57,536 INFO L87 Difference]: Start difference. First operand 2416 states and 5424 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 01:04:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:59,250 INFO L93 Difference]: Finished difference Result 5672 states and 16247 transitions. [2022-01-10 01:04:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 01:04:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2022-01-10 01:04:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:59,289 INFO L225 Difference]: With dead ends: 5672 [2022-01-10 01:04:59,290 INFO L226 Difference]: Without dead ends: 3272 [2022-01-10 01:04:59,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 01:04:59,310 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 451 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:59,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1386 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:04:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-01-10 01:04:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3098. [2022-01-10 01:04:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2387 states have (on average 1.0888144113950566) internal successors, (2599), 2329 states have internal predecessors, (2599), 165 states have call successors, (165), 88 states have call predecessors, (165), 545 states have return successors, (4932), 680 states have call predecessors, (4932), 163 states have call successors, (4932) [2022-01-10 01:04:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 7696 transitions. [2022-01-10 01:04:59,553 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 7696 transitions. Word has length 76 [2022-01-10 01:04:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:59,553 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 7696 transitions. [2022-01-10 01:04:59,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 5 states have call successors, (22), 9 states have call predecessors, (22), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-01-10 01:04:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 7696 transitions. [2022-01-10 01:04:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 01:04:59,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:59,561 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:59,581 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 01:04:59,781 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,SelfDestructingSolverStorable23 [2022-01-10 01:04:59,781 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1617243831, now seen corresponding path program 1 times [2022-01-10 01:04:59,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:59,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490461704] [2022-01-10 01:04:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:59,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:04:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 01:04:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:04:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:04:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:05:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-10 01:05:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:05:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-10 01:05:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 01:05:00,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490461704] [2022-01-10 01:05:00,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490461704] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:05:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962706475] [2022-01-10 01:05:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:00,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:05:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:05:00,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:05:00,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 01:05:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:00,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 01:05:00,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:05:00,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-01-10 01:05:01,270 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5766 Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| c_~user~0.base (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|) v_ArrVal_5766))) (<= (+ c_~user~0.offset 20) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|))) is different from true [2022-01-10 01:05:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:05:01,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-01-10 01:05:01,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 01:05:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 1 not checked. [2022-01-10 01:05:01,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:05:01,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 01:05:01,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:05:01,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 01:05:01,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:05:02,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 01:05:02,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:05:02,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 01:05:02,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:05:02,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 01:05:02,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:05:02,777 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5836 Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| Int)) (or (not (= ~sys_state_s~0~AS_IDLE (select (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|) v_ArrVal_5836) c_~user~0.offset))) (not (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_86|)) (not (<= (+ c_~user~0.offset 20) |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_66|)))) is different from false [2022-01-10 01:05:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962706475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:05:02,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:05:02,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-01-10 01:05:02,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998601135] [2022-01-10 01:05:02,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 01:05:02,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 01:05:02,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 01:05:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=264, Unknown=2, NotChecked=66, Total=380 [2022-01-10 01:05:02,780 INFO L87 Difference]: Start difference. First operand 3098 states and 7696 transitions. Second operand has 19 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-01-10 01:05:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:05:11,703 INFO L93 Difference]: Finished difference Result 7039 states and 23114 transitions. [2022-01-10 01:05:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 01:05:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 114 [2022-01-10 01:05:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:05:11,737 INFO L225 Difference]: With dead ends: 7039 [2022-01-10 01:05:11,737 INFO L226 Difference]: Without dead ends: 3957 [2022-01-10 01:05:11,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=202, Invalid=1051, Unknown=15, NotChecked=138, Total=1406 [2022-01-10 01:05:11,761 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 390 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:05:11,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1540 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1581 Invalid, 0 Unknown, 280 Unchecked, 1.4s Time] [2022-01-10 01:05:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-01-10 01:05:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3744. [2022-01-10 01:05:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2892 states have (on average 1.0819502074688796) internal successors, (3129), 2822 states have internal predecessors, (3129), 184 states have call successors, (184), 99 states have call predecessors, (184), 667 states have return successors, (6434), 822 states have call predecessors, (6434), 182 states have call successors, (6434) [2022-01-10 01:05:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 9747 transitions. [2022-01-10 01:05:12,064 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 9747 transitions. Word has length 114 [2022-01-10 01:05:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:05:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 9747 transitions. [2022-01-10 01:05:12,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-01-10 01:05:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 9747 transitions. [2022-01-10 01:05:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 01:05:12,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:05:12,073 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:05:12,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 01:05:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:05:12,286 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:05:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:05:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash 794180344, now seen corresponding path program 1 times [2022-01-10 01:05:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:05:12,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203544713] [2022-01-10 01:05:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:12,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:05:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:05:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:05:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:05:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 01:05:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:05:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-10 01:05:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:05:12,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:12,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203544713] [2022-01-10 01:05:12,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203544713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:05:12,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:05:12,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:05:12,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977841113] [2022-01-10 01:05:12,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:05:12,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:05:12,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:05:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:05:12,465 INFO L87 Difference]: Start difference. First operand 3744 states and 9747 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 01:05:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:05:13,629 INFO L93 Difference]: Finished difference Result 7561 states and 25570 transitions. [2022-01-10 01:05:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:05:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 83 [2022-01-10 01:05:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:05:13,668 INFO L225 Difference]: With dead ends: 7561 [2022-01-10 01:05:13,668 INFO L226 Difference]: Without dead ends: 3824 [2022-01-10 01:05:13,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-10 01:05:13,698 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 107 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:05:13,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 885 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:05:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2022-01-10 01:05:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 3735. [2022-01-10 01:05:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2885 states have (on average 1.0818024263431543) internal successors, (3121), 2814 states have internal predecessors, (3121), 184 states have call successors, (184), 99 states have call predecessors, (184), 665 states have return successors, (6432), 821 states have call predecessors, (6432), 182 states have call successors, (6432) [2022-01-10 01:05:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 9737 transitions. [2022-01-10 01:05:14,099 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 9737 transitions. Word has length 83 [2022-01-10 01:05:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:05:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 9737 transitions. [2022-01-10 01:05:14,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 01:05:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 9737 transitions. [2022-01-10 01:05:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 01:05:14,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:05:14,120 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:05:14,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 01:05:14,121 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:05:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:05:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -617153070, now seen corresponding path program 1 times [2022-01-10 01:05:14,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:05:14,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174454452] [2022-01-10 01:05:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:05:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:05:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:05:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:05:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:05:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:05:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:05:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:05:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-10 01:05:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 01:05:14,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:14,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174454452] [2022-01-10 01:05:14,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174454452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:05:14,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:05:14,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:05:14,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194811006] [2022-01-10 01:05:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:05:14,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:05:14,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:05:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:05:14,372 INFO L87 Difference]: Start difference. First operand 3735 states and 9737 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7)