./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:23:37,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:23:37,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:23:37,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:23:37,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:23:37,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:23:37,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:23:37,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:23:37,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:23:37,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:23:37,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:23:37,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:23:37,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:23:37,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:23:37,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:23:37,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:23:37,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:23:37,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:23:37,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:23:37,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:23:37,873 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:23:37,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:23:37,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:23:37,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:23:37,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:23:37,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:23:37,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:23:37,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:23:37,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:23:37,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:23:37,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:23:37,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:23:37,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:23:37,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:23:37,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:23:37,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:23:37,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:23:37,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:23:37,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:23:37,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:23:37,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:23:37,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:23:37,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:23:37,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:23:37,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:23:37,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:23:37,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:23:37,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:23:37,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:23:37,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:23:37,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:23:37,915 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:23:37,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:23:37,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:23:37,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:23:37,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:23:37,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:23:37,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:23:37,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:23:37,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:23:37,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:23:37,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:23:37,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:23:37,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:23:37,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:23:37,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:23:37,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:23:37,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:23:37,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:23:37,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:23:37,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:23:37,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:23:37,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:23:37,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:23:37,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:23:37,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:23:37,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb [2022-07-19 19:23:38,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:23:38,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:23:38,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:23:38,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:23:38,088 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:23:38,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2022-07-19 19:23:38,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a74c8ee/fcec419bb2bf4d15a617441ac3b911fa/FLAGe72fcbb0f [2022-07-19 19:23:38,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:23:38,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2022-07-19 19:23:38,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a74c8ee/fcec419bb2bf4d15a617441ac3b911fa/FLAGe72fcbb0f [2022-07-19 19:23:39,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a74c8ee/fcec419bb2bf4d15a617441ac3b911fa [2022-07-19 19:23:39,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:23:39,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:23:39,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:23:39,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:23:39,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:23:39,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:23:39" (1/1) ... [2022-07-19 19:23:39,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389f3205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:39, skipping insertion in model container [2022-07-19 19:23:39,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:23:39" (1/1) ... [2022-07-19 19:23:39,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:23:39,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:23:40,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2022-07-19 19:23:40,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2022-07-19 19:23:40,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:23:40,612 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:23:41,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2022-07-19 19:23:41,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2022-07-19 19:23:41,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:23:41,281 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:23:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41 WrapperNode [2022-07-19 19:23:41,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:23:41,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:23:41,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:23:41,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:23:41,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,593 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-07-19 19:23:41,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:23:41,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:23:41,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:23:41,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:23:41,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:41,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:42,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:23:42,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:23:42,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:23:42,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:23:42,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (1/1) ... [2022-07-19 19:23:42,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:23:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:23:42,121 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) [2022-07-19 19:23:42,132 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 [2022-07-19 19:23:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:23:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:23:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:23:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:23:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:23:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:23:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:23:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 19:23:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 19:23:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:23:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:23:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:23:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:23:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:23:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:23:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:23:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:23:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:23:42,255 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:23:42,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:23:46,945 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:23:46,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:23:46,965 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-19 19:23:46,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:23:46 BoogieIcfgContainer [2022-07-19 19:23:46,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:23:46,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:23:46,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:23:46,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:23:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:23:39" (1/3) ... [2022-07-19 19:23:46,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b0b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:23:46, skipping insertion in model container [2022-07-19 19:23:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:23:41" (2/3) ... [2022-07-19 19:23:46,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b0b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:23:46, skipping insertion in model container [2022-07-19 19:23:46,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:23:46" (3/3) ... [2022-07-19 19:23:46,974 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-2.c [2022-07-19 19:23:46,983 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:23:46,983 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:23:47,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:23:47,039 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4276a820, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e3b34c5 [2022-07-19 19:23:47,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:23:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-19 19:23:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:47,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:47,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:47,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:47,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:47,063 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-07-19 19:23:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:47,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768742437] [2022-07-19 19:23:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:47,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768742437] [2022-07-19 19:23:47,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768742437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:23:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065856674] [2022-07-19 19:23:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:47,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:23:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:47,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:23:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:23:47,400 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:48,074 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-07-19 19:23:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:23:48,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:48,092 INFO L225 Difference]: With dead ends: 4852 [2022-07-19 19:23:48,092 INFO L226 Difference]: Without dead ends: 2395 [2022-07-19 19:23:48,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:23:48,100 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:48,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 19:23:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-19 19:23:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-07-19 19:23:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 19:23:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-07-19 19:23:48,204 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-07-19 19:23:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:48,205 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-07-19 19:23:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-07-19 19:23:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:48,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:48,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:23:48,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-07-19 19:23:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:48,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802868976] [2022-07-19 19:23:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:48,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:48,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802868976] [2022-07-19 19:23:48,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802868976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:48,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:48,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:23:48,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458645882] [2022-07-19 19:23:48,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:48,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:23:48,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:23:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:23:48,364 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:49,372 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-07-19 19:23:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:23:49,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:49,382 INFO L225 Difference]: With dead ends: 2856 [2022-07-19 19:23:49,382 INFO L226 Difference]: Without dead ends: 2660 [2022-07-19 19:23:49,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:23:49,384 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:49,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 19:23:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-07-19 19:23:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-07-19 19:23:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-19 19:23:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-07-19 19:23:49,430 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-07-19 19:23:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:49,431 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-07-19 19:23:49,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-07-19 19:23:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:49,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:49,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:49,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:23:49,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-07-19 19:23:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:49,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170443960] [2022-07-19 19:23:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:49,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:49,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170443960] [2022-07-19 19:23:49,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170443960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:49,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:49,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993339299] [2022-07-19 19:23:49,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:49,533 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:50,787 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-07-19 19:23:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:50,804 INFO L225 Difference]: With dead ends: 3324 [2022-07-19 19:23:50,805 INFO L226 Difference]: Without dead ends: 2929 [2022-07-19 19:23:50,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:50,813 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:50,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:23:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-07-19 19:23:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-07-19 19:23:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-19 19:23:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-07-19 19:23:50,871 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-07-19 19:23:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:50,872 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-07-19 19:23:50,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-07-19 19:23:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:50,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:50,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:50,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:23:50,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-07-19 19:23:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233703768] [2022-07-19 19:23:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233703768] [2022-07-19 19:23:50,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233703768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:50,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:50,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891153839] [2022-07-19 19:23:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:50,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:50,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:50,951 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:52,153 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-07-19 19:23:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:52,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:52,165 INFO L225 Difference]: With dead ends: 4012 [2022-07-19 19:23:52,166 INFO L226 Difference]: Without dead ends: 3431 [2022-07-19 19:23:52,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:52,169 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:52,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:23:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-07-19 19:23:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-07-19 19:23:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-19 19:23:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-07-19 19:23:52,254 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-07-19 19:23:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:52,258 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-07-19 19:23:52,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-07-19 19:23:52,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:52,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:52,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:23:52,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-07-19 19:23:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292568270] [2022-07-19 19:23:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:52,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:52,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292568270] [2022-07-19 19:23:52,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292568270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:52,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:52,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450320600] [2022-07-19 19:23:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:52,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:52,372 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:53,554 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-07-19 19:23:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:53,568 INFO L225 Difference]: With dead ends: 5346 [2022-07-19 19:23:53,568 INFO L226 Difference]: Without dead ends: 4389 [2022-07-19 19:23:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:53,649 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:23:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-19 19:23:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-07-19 19:23:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-19 19:23:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-07-19 19:23:53,756 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-07-19 19:23:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:53,757 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-07-19 19:23:53,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-07-19 19:23:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:53,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:53,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:23:53,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-07-19 19:23:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126231766] [2022-07-19 19:23:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:53,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:53,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126231766] [2022-07-19 19:23:53,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126231766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:53,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:53,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837782532] [2022-07-19 19:23:53,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:53,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:53,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:53,826 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:55,072 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-07-19 19:23:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:55,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:55,096 INFO L225 Difference]: With dead ends: 8013 [2022-07-19 19:23:55,096 INFO L226 Difference]: Without dead ends: 6303 [2022-07-19 19:23:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:55,104 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 4717 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 21354 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:23:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-07-19 19:23:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-07-19 19:23:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-19 19:23:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-07-19 19:23:55,296 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-07-19 19:23:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:55,296 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-07-19 19:23:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-07-19 19:23:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:55,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:55,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:23:55,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-07-19 19:23:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008566272] [2022-07-19 19:23:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:55,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008566272] [2022-07-19 19:23:55,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008566272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:55,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:55,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220109486] [2022-07-19 19:23:55,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:55,386 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:56,866 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-07-19 19:23:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:23:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:56,899 INFO L225 Difference]: With dead ends: 14612 [2022-07-19 19:23:56,900 INFO L226 Difference]: Without dead ends: 11389 [2022-07-19 19:23:56,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:23:56,914 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4979 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 20866 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:56,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 20866 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:23:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-07-19 19:23:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-07-19 19:23:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-19 19:23:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-07-19 19:23:57,250 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-07-19 19:23:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:57,250 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-07-19 19:23:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-07-19 19:23:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:57,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:57,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:57,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:23:57,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-07-19 19:23:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:57,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791203664] [2022-07-19 19:23:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:57,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791203664] [2022-07-19 19:23:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791203664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:57,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:57,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:57,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170855770] [2022-07-19 19:23:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:57,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:57,328 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:59,246 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-07-19 19:23:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:23:59,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:23:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:59,299 INFO L225 Difference]: With dead ends: 26019 [2022-07-19 19:23:59,299 INFO L226 Difference]: Without dead ends: 19803 [2022-07-19 19:23:59,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:23:59,321 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 4757 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:59,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21406 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:23:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-07-19 19:23:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-07-19 19:23:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-19 19:23:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-07-19 19:23:59,840 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-07-19 19:23:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:59,840 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-07-19 19:23:59,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:23:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-07-19 19:23:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:23:59,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:59,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:59,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:23:59,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-07-19 19:23:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506705081] [2022-07-19 19:23:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:23:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:23:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:23:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:23:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:59,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506705081] [2022-07-19 19:23:59,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506705081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:59,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:59,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295097495] [2022-07-19 19:23:59,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:59,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:59,972 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:02,532 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-07-19 19:24:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:24:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:24:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:02,649 INFO L225 Difference]: With dead ends: 47282 [2022-07-19 19:24:02,649 INFO L226 Difference]: Without dead ends: 35417 [2022-07-19 19:24:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:24:02,696 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4849 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:02,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4867 Valid, 21329 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:24:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-07-19 19:24:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-07-19 19:24:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-19 19:24:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-07-19 19:24:03,970 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-07-19 19:24:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:03,970 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-07-19 19:24:03,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-07-19 19:24:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:24:03,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:03,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:03,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:24:03,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-07-19 19:24:03,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:03,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645288433] [2022-07-19 19:24:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:03,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:24:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:24:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:24:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:24:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:04,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645288433] [2022-07-19 19:24:04,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645288433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:04,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:04,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285598241] [2022-07-19 19:24:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:04,048 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:07,954 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-07-19 19:24:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:24:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:24:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:08,183 INFO L225 Difference]: With dead ends: 89521 [2022-07-19 19:24:08,183 INFO L226 Difference]: Without dead ends: 66071 [2022-07-19 19:24:08,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:24:08,248 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4812 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 21322 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:08,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 21322 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:24:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-07-19 19:24:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-07-19 19:24:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:24:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-07-19 19:24:10,962 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-07-19 19:24:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-07-19 19:24:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-07-19 19:24:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:24:10,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:10,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:24:10,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-07-19 19:24:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:10,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461991994] [2022-07-19 19:24:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:10,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:24:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:24:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:24:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:24:11,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461991994] [2022-07-19 19:24:11,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461991994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:11,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:11,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578879128] [2022-07-19 19:24:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:11,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:11,063 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:14,660 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-07-19 19:24:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:24:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:24:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:14,875 INFO L225 Difference]: With dead ends: 107098 [2022-07-19 19:24:14,876 INFO L226 Difference]: Without dead ends: 60543 [2022-07-19 19:24:14,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:24:14,986 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4522 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:14,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 20603 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 19:24:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states. [2022-07-19 19:24:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60543 to 48689. [2022-07-19 19:24:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.5473787560507808) internal successors, (67769), 44055 states have internal predecessors, (67769), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:24:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 80770 transitions. [2022-07-19 19:24:17,679 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 80770 transitions. Word has length 102 [2022-07-19 19:24:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:17,679 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 80770 transitions. [2022-07-19 19:24:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 80770 transitions. [2022-07-19 19:24:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 19:24:17,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:17,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:17,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:24:17,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2022-07-19 19:24:17,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:17,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069685235] [2022-07-19 19:24:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:24:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:24:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:24:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:24:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069685235] [2022-07-19 19:24:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069685235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:24:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57637250] [2022-07-19 19:24:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:24:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:24:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:24:17,767 INFO L87 Difference]: Start difference. First operand 48689 states and 80770 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:23,351 INFO L93 Difference]: Finished difference Result 135211 states and 220744 transitions. [2022-07-19 19:24:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:24:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-19 19:24:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:23,717 INFO L225 Difference]: With dead ends: 135211 [2022-07-19 19:24:23,717 INFO L226 Difference]: Without dead ends: 88657 [2022-07-19 19:24:23,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 19:24:23,807 INFO L413 NwaCegarLoop]: 4572 mSDtfsCounter, 4929 mSDsluCounter, 12525 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 17097 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:23,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 17097 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 19:24:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88657 states. [2022-07-19 19:24:27,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88657 to 71452. [2022-07-19 19:24:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71452 states, 64042 states have (on average 1.5303394647262734) internal successors, (98006), 64558 states have internal predecessors, (98006), 4708 states have call successors, (4708), 2317 states have call predecessors, (4708), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-19 19:24:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71452 states to 71452 states and 116425 transitions. [2022-07-19 19:24:27,505 INFO L78 Accepts]: Start accepts. Automaton has 71452 states and 116425 transitions. Word has length 102 [2022-07-19 19:24:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:27,506 INFO L495 AbstractCegarLoop]: Abstraction has 71452 states and 116425 transitions. [2022-07-19 19:24:27,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:24:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 71452 states and 116425 transitions. [2022-07-19 19:24:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-19 19:24:27,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:27,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:27,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:24:27,649 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2022-07-19 19:24:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:27,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445608477] [2022-07-19 19:24:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:24:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:24:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:24:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:24:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 19:24:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:24:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 19:24:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 19:24:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:27,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445608477] [2022-07-19 19:24:27,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445608477] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:24:27,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595522556] [2022-07-19 19:24:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:24:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:24:27,757 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) [2022-07-19 19:24:27,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:24:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:27,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:24:27,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:24:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 19:24:27,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:24:27,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595522556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:27,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:24:27,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 19:24:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582123695] [2022-07-19 19:24:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:27,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:24:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:24:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:24:27,982 INFO L87 Difference]: Start difference. First operand 71452 states and 116425 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 19:24:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:34,090 INFO L93 Difference]: Finished difference Result 208731 states and 341317 transitions. [2022-07-19 19:24:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:24:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-07-19 19:24:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:34,527 INFO L225 Difference]: With dead ends: 208731 [2022-07-19 19:24:34,527 INFO L226 Difference]: Without dead ends: 139414 [2022-07-19 19:24:34,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:24:34,674 INFO L413 NwaCegarLoop]: 4286 mSDtfsCounter, 4204 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:34,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 4573 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:24:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139414 states.