./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.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_label46+token_ring.12.cil-1.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 8f86f2fbff11a0ee7c52360384354edd19538e6bc949aea04301001498242d90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:27:38,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:27:38,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:27:38,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:27:38,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:27:38,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:27:38,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:27:38,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:27:38,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:27:38,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:27:38,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:27:38,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:27:38,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:27:38,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:27:38,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:27:38,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:27:38,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:27:38,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:27:38,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:27:38,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:27:38,606 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:27:38,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:27:38,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:27:38,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:27:38,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:27:38,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:27:38,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:27:38,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:27:38,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:27:38,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:27:38,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:27:38,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:27:38,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:27:38,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:27:38,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:27:38,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:27:38,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:27:38,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:27:38,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:27:38,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:27:38,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:27:38,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:27:38,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:27:38,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:27:38,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:27:38,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:27:38,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:27:38,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:27:38,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:27:38,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:27:38,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:27:38,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:27:38,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:27:38,655 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:27:38,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:27:38,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:27:38,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:27:38,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:27:38,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:27:38,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:27:38,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:27:38,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:27:38,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:27:38,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:27:38,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:27:38,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:27:38,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:27:38,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:27:38,666 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:27:38,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:27:38,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:27:38,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f86f2fbff11a0ee7c52360384354edd19538e6bc949aea04301001498242d90 [2022-07-19 19:27:38,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:27:38,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:27:38,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:27:38,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:27:38,875 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:27:38,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c [2022-07-19 19:27:38,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a919372f0/45517dfb83b0463895c248be4f9a80c1/FLAG5c29687d6 [2022-07-19 19:27:39,577 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:27:39,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c [2022-07-19 19:27:39,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a919372f0/45517dfb83b0463895c248be4f9a80c1/FLAG5c29687d6 [2022-07-19 19:27:39,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a919372f0/45517dfb83b0463895c248be4f9a80c1 [2022-07-19 19:27:39,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:27:39,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:27:39,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:27:39,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:27:39,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:27:39,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:27:39" (1/1) ... [2022-07-19 19:27:39,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b772a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:39, skipping insertion in model container [2022-07-19 19:27:39,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:27:39" (1/1) ... [2022-07-19 19:27:39,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:27:39,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:27:41,061 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_label46+token_ring.12.cil-1.c[382357,382370] [2022-07-19 19:27:41,086 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_label46+token_ring.12.cil-1.c[383339,383352] [2022-07-19 19:27:41,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:27:41,304 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:27:41,893 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_label46+token_ring.12.cil-1.c[382357,382370] [2022-07-19 19:27:41,900 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_label46+token_ring.12.cil-1.c[383339,383352] [2022-07-19 19:27:41,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:27:41,967 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:27:41,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41 WrapperNode [2022-07-19 19:27:41,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:27:41,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:27:41,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:27:41,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:27:41,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,296 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-07-19 19:27:42,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:27:42,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:27:42,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:27:42,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:27:42,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:27:42,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:27:42,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:27:42,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:27:42,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (1/1) ... [2022-07-19 19:27:42,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:27:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:27:42,918 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 19:27:42,923 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 19:27:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:27:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:27:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:27:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:27:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:27:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:27:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:27:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 19:27:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 19:27:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:27:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:27:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:27:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:27:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:27:42,944 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:27:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:27:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:27:42,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:27:43,041 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:27:43,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:27:48,120 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:27:48,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:27:48,147 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 19:27:48,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:27:48 BoogieIcfgContainer [2022-07-19 19:27:48,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:27:48,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:27:48,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:27:48,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:27:48,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:27:39" (1/3) ... [2022-07-19 19:27:48,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4350b7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:27:48, skipping insertion in model container [2022-07-19 19:27:48,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:27:41" (2/3) ... [2022-07-19 19:27:48,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4350b7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:27:48, skipping insertion in model container [2022-07-19 19:27:48,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:27:48" (3/3) ... [2022-07-19 19:27:48,157 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.12.cil-1.c [2022-07-19 19:27:48,177 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:27:48,178 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:27:48,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:27:48,250 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@3dcb85e4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13318118 [2022-07-19 19:27:48,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:27:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-19 19:27:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:27:48,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:48,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:48,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-07-19 19:27:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:48,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142118790] [2022-07-19 19:27:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:27:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:27:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:27:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:27:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:48,649 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 19:27:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:48,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142118790] [2022-07-19 19:27:48,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142118790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:48,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:48,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:27:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019908506] [2022-07-19 19:27:48,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:27:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:27:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:27:48,680 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 19:27:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:50,226 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2022-07-19 19:27:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:27:50,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2022-07-19 19:27:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:50,246 INFO L225 Difference]: With dead ends: 5281 [2022-07-19 19:27:50,247 INFO L226 Difference]: Without dead ends: 2647 [2022-07-19 19:27:50,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:27:50,255 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 1048 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17178 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:50,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 17178 Invalid, 787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:27:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-19 19:27:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-19 19:27:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:27:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-07-19 19:27:50,363 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-07-19 19:27:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:50,364 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-07-19 19:27:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 19:27:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-07-19 19:27:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:27:50,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:50,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:50,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:27:50,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-07-19 19:27:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:50,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185219985] [2022-07-19 19:27:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:50,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:27:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:27:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:27:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:27:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:50,586 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 19:27:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:50,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185219985] [2022-07-19 19:27:50,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185219985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:50,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:50,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:27:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618619665] [2022-07-19 19:27:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:27:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:27:50,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:27:50,597 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 19:27:51,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:51,802 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2022-07-19 19:27:51,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:27:51,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2022-07-19 19:27:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:51,811 INFO L225 Difference]: With dead ends: 3016 [2022-07-19 19:27:51,811 INFO L226 Difference]: Without dead ends: 2647 [2022-07-19 19:27:51,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:27:51,814 INFO L413 NwaCegarLoop]: 4625 mSDtfsCounter, 1034 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:51,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16905 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 19:27:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-07-19 19:27:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-07-19 19:27:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:27:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-07-19 19:27:51,860 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-07-19 19:27:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:51,862 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-07-19 19:27:51,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 19:27:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-07-19 19:27:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:27:51,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:51,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:27:51,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-07-19 19:27:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:51,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926242600] [2022-07-19 19:27:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:27:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:27:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:27:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:27:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:52,024 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 19:27:52,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926242600] [2022-07-19 19:27:52,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926242600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:52,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:52,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:27:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982140894] [2022-07-19 19:27:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:52,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:27:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:27:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:27:52,026 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 19:27:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:54,464 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2022-07-19 19:27:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:27:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2022-07-19 19:27:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:54,503 INFO L225 Difference]: With dead ends: 3535 [2022-07-19 19:27:54,503 INFO L226 Difference]: Without dead ends: 3171 [2022-07-19 19:27:54,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:27:54,514 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5525 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 17531 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:54,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5544 Valid, 17531 Invalid, 2142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:27:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-07-19 19:27:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2022-07-19 19:27:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 19:27:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2022-07-19 19:27:54,602 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2022-07-19 19:27:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:54,603 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2022-07-19 19:27:54,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 19:27:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2022-07-19 19:27:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:27:54,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:54,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:27:54,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-07-19 19:27:54,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:54,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978459258] [2022-07-19 19:27:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:27:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:27:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:27:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:27:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:54,748 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 19:27:54,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:54,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978459258] [2022-07-19 19:27:54,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978459258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:54,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:54,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:27:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517260861] [2022-07-19 19:27:54,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:27:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:27:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:27:54,751 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:27:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:27:57,591 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2022-07-19 19:27:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:27:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:27:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:27:57,603 INFO L225 Difference]: With dead ends: 4458 [2022-07-19 19:27:57,604 INFO L226 Difference]: Without dead ends: 3713 [2022-07-19 19:27:57,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:27:57,607 INFO L413 NwaCegarLoop]: 4988 mSDtfsCounter, 5553 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 22772 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:27:57,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 22772 Invalid, 3219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 19:27:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-19 19:27:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2022-07-19 19:27:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-19 19:27:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2022-07-19 19:27:57,695 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2022-07-19 19:27:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:27:57,695 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2022-07-19 19:27:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:27:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2022-07-19 19:27:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:27:57,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:27:57,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:27:57,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:27:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:27:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2022-07-19 19:27:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:27:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058274240] [2022-07-19 19:27:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:27:57,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:27:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:27:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:27:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:27:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:27:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:27:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:27:57,864 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 19:27:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:27:57,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058274240] [2022-07-19 19:27:57,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058274240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:27:57,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:27:57,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:27:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885594438] [2022-07-19 19:27:57,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:27:57,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:27:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:27:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:27:57,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:27:57,868 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:00,817 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2022-07-19 19:28:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:00,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:00,831 INFO L225 Difference]: With dead ends: 5819 [2022-07-19 19:28:00,831 INFO L226 Difference]: Without dead ends: 4720 [2022-07-19 19:28:00,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:00,835 INFO L413 NwaCegarLoop]: 4721 mSDtfsCounter, 5664 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:00,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5683 Valid, 21831 Invalid, 2908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 19:28:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-07-19 19:28:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2022-07-19 19:28:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-19 19:28:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2022-07-19 19:28:00,998 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2022-07-19 19:28:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:00,998 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2022-07-19 19:28:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2022-07-19 19:28:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:01,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:01,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:28:01,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2022-07-19 19:28:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768934038] [2022-07-19 19:28:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:01,142 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 19:28:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:01,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768934038] [2022-07-19 19:28:01,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768934038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:01,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:01,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284433720] [2022-07-19 19:28:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:01,145 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:04,303 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2022-07-19 19:28:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:04,322 INFO L225 Difference]: With dead ends: 8436 [2022-07-19 19:28:04,322 INFO L226 Difference]: Without dead ends: 6628 [2022-07-19 19:28:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:04,326 INFO L413 NwaCegarLoop]: 4976 mSDtfsCounter, 5548 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 22760 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:04,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 22760 Invalid, 3223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:28:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2022-07-19 19:28:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2022-07-19 19:28:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-19 19:28:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2022-07-19 19:28:04,511 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2022-07-19 19:28:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2022-07-19 19:28:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2022-07-19 19:28:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:04,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:04,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:28:04,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:04,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2022-07-19 19:28:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:04,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050607148] [2022-07-19 19:28:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:04,661 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 19:28:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:04,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050607148] [2022-07-19 19:28:04,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050607148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:04,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:04,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350096745] [2022-07-19 19:28:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:04,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:04,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:04,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:04,666 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:07,925 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2022-07-19 19:28:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:07,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:07,950 INFO L225 Difference]: With dead ends: 13662 [2022-07-19 19:28:07,950 INFO L226 Difference]: Without dead ends: 10435 [2022-07-19 19:28:07,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:07,959 INFO L413 NwaCegarLoop]: 4968 mSDtfsCounter, 5543 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 22752 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:07,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5562 Valid, 22752 Invalid, 3204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:28:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-19 19:28:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2022-07-19 19:28:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-19 19:28:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2022-07-19 19:28:08,300 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2022-07-19 19:28:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:08,301 INFO L495 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2022-07-19 19:28:08,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2022-07-19 19:28:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:08,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:08,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:28:08,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2022-07-19 19:28:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172771616] [2022-07-19 19:28:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:08,429 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 19:28:08,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:08,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172771616] [2022-07-19 19:28:08,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172771616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:08,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:08,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849066492] [2022-07-19 19:28:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:08,431 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:11,722 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2022-07-19 19:28:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:11,786 INFO L225 Difference]: With dead ends: 24132 [2022-07-19 19:28:11,786 INFO L226 Difference]: Without dead ends: 18053 [2022-07-19 19:28:11,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:11,811 INFO L413 NwaCegarLoop]: 4963 mSDtfsCounter, 5542 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22747 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:11,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5561 Valid, 22747 Invalid, 3196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 19:28:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2022-07-19 19:28:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2022-07-19 19:28:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:28:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2022-07-19 19:28:12,721 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2022-07-19 19:28:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:12,721 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2022-07-19 19:28:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2022-07-19 19:28:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:12,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:12,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:28:12,729 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2022-07-19 19:28:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537889248] [2022-07-19 19:28:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:12,847 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 19:28:12,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537889248] [2022-07-19 19:28:12,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537889248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:12,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:12,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614415060] [2022-07-19 19:28:12,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:12,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:12,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:12,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:12,850 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:15,330 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2022-07-19 19:28:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:28:15,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:15,366 INFO L225 Difference]: With dead ends: 30100 [2022-07-19 19:28:15,366 INFO L226 Difference]: Without dead ends: 18304 [2022-07-19 19:28:15,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:28:15,389 INFO L413 NwaCegarLoop]: 4601 mSDtfsCounter, 5093 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21397 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:15,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 21397 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:28:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2022-07-19 19:28:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2022-07-19 19:28:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:28:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2022-07-19 19:28:16,109 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2022-07-19 19:28:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:16,110 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2022-07-19 19:28:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2022-07-19 19:28:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:16,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:16,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:28:16,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2022-07-19 19:28:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:16,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412238250] [2022-07-19 19:28:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:16,243 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 19:28:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:16,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412238250] [2022-07-19 19:28:16,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412238250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:16,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:16,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305835431] [2022-07-19 19:28:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:16,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:16,245 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:20,660 INFO L93 Difference]: Finished difference Result 45037 states and 72769 transitions. [2022-07-19 19:28:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:20,905 INFO L225 Difference]: With dead ends: 45037 [2022-07-19 19:28:20,906 INFO L226 Difference]: Without dead ends: 33241 [2022-07-19 19:28:20,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:20,929 INFO L413 NwaCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22736 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 22736 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 19:28:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33241 states. [2022-07-19 19:28:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33241 to 25435. [2022-07-19 19:28:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25435 states, 23607 states have (on average 1.5927055534375396) internal successors, (37599), 23674 states have internal predecessors, (37599), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-07-19 19:28:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25435 states to 25435 states and 41134 transitions. [2022-07-19 19:28:22,430 INFO L78 Accepts]: Start accepts. Automaton has 25435 states and 41134 transitions. Word has length 179 [2022-07-19 19:28:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:22,430 INFO L495 AbstractCegarLoop]: Abstraction has 25435 states and 41134 transitions. [2022-07-19 19:28:22,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25435 states and 41134 transitions. [2022-07-19 19:28:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:22,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:22,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:28:22,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2022-07-19 19:28:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:22,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522677168] [2022-07-19 19:28:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:22,572 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 19:28:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:22,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522677168] [2022-07-19 19:28:22,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522677168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:22,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:22,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018974271] [2022-07-19 19:28:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:22,574 INFO L87 Difference]: Start difference. First operand 25435 states and 41134 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:30,290 INFO L93 Difference]: Finished difference Result 86917 states and 140729 transitions. [2022-07-19 19:28:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:30,664 INFO L225 Difference]: With dead ends: 86917 [2022-07-19 19:28:30,677 INFO L226 Difference]: Without dead ends: 63623 [2022-07-19 19:28:30,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:30,764 INFO L413 NwaCegarLoop]: 4947 mSDtfsCounter, 5533 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 22731 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:30,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 22731 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:28:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63623 states. [2022-07-19 19:28:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63623 to 48492. [2022-07-19 19:28:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48492 states, 44872 states have (on average 1.5789133535389552) internal successors, (70849), 45003 states have internal predecessors, (70849), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-07-19 19:28:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48492 states to 48492 states and 78594 transitions. [2022-07-19 19:28:34,144 INFO L78 Accepts]: Start accepts. Automaton has 48492 states and 78594 transitions. Word has length 179 [2022-07-19 19:28:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:34,145 INFO L495 AbstractCegarLoop]: Abstraction has 48492 states and 78594 transitions. [2022-07-19 19:28:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 48492 states and 78594 transitions. [2022-07-19 19:28:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:34,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:34,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:28:34,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2022-07-19 19:28:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:34,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130952073] [2022-07-19 19:28:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:34,298 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 19:28:34,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130952073] [2022-07-19 19:28:34,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130952073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:34,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:34,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727962263] [2022-07-19 19:28:34,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:34,300 INFO L87 Difference]: Start difference. First operand 48492 states and 78594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:28:47,637 INFO L93 Difference]: Finished difference Result 170676 states and 278495 transitions. [2022-07-19 19:28:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:28:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-19 19:28:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:28:48,311 INFO L225 Difference]: With dead ends: 170676 [2022-07-19 19:28:48,311 INFO L226 Difference]: Without dead ends: 124325 [2022-07-19 19:28:48,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:28:48,455 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 5634 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21805 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:28:48,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5653 Valid, 21805 Invalid, 2861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:28:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124325 states. [2022-07-19 19:28:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124325 to 94733. [2022-07-19 19:28:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94733 states, 87529 states have (on average 1.5713534942704703) internal successors, (137539), 87788 states have internal predecessors, (137539), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-19 19:28:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94733 states to 94733 states and 155162 transitions. [2022-07-19 19:28:56,245 INFO L78 Accepts]: Start accepts. Automaton has 94733 states and 155162 transitions. Word has length 179 [2022-07-19 19:28:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:28:56,245 INFO L495 AbstractCegarLoop]: Abstraction has 94733 states and 155162 transitions. [2022-07-19 19:28:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 19:28:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 94733 states and 155162 transitions. [2022-07-19 19:28:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 19:28:56,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:28:56,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:28:56,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:28:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:28:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 953780728, now seen corresponding path program 1 times [2022-07-19 19:28:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:28:56,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596766798] [2022-07-19 19:28:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:28:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:28:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:28:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:28:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:28:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:28:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:28:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:28:56,624 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 19:28:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:28:56,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596766798] [2022-07-19 19:28:56,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596766798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:28:56,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:28:56,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:28:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119773067] [2022-07-19 19:28:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:28:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:28:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:28:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:28:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:28:56,626 INFO L87 Difference]: Start difference. First operand 94733 states and 155162 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)