./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/systemc/token_ring.15.cil.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 d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:54:17,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:54:17,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:54:17,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:54:17,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:54:17,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:54:17,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:54:17,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:54:17,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:54:17,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:54:17,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:54:17,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:54:17,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:54:17,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:54:17,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:54:17,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:54:17,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:54:17,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:54:17,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:54:17,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:54:17,992 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:54:17,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:54:17,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:54:17,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:54:17,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:54:17,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:54:18,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:54:18,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:54:18,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:54:18,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:54:18,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:54:18,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:54:18,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:54:18,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:54:18,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:54:18,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:54:18,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:54:18,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:54:18,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:54:18,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:54:18,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:54:18,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:54:18,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:54:18,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:54:18,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:54:18,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:54:18,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:54:18,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:54:18,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:54:18,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:54:18,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:54:18,050 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:54:18,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:54:18,052 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:54:18,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:54:18,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:54:18,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:54:18,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:54:18,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:54:18,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:54:18,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:54:18,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:54:18,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:54:18,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:54:18,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:54:18,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:54:18,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:54:18,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:54:18,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:54:18,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:54:18,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:54:18,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:54:18,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:54:18,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:54:18,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:54:18,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:54:18,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 [2022-07-22 17:54:18,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:54:18,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:54:18,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:54:18,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:54:18,319 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:54:18,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.15.cil.c [2022-07-22 17:54:18,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08c0a0d5/42bf7e1816a6464f85600f8e2f3dea2c/FLAGedfaad15f [2022-07-22 17:54:18,787 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:54:18,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.15.cil.c [2022-07-22 17:54:18,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08c0a0d5/42bf7e1816a6464f85600f8e2f3dea2c/FLAGedfaad15f [2022-07-22 17:54:19,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08c0a0d5/42bf7e1816a6464f85600f8e2f3dea2c [2022-07-22 17:54:19,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:54:19,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:54:19,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:54:19,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:54:19,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:54:19,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354f9c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19, skipping insertion in model container [2022-07-22 17:54:19,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:54:19,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:54:19,367 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/systemc/token_ring.15.cil.c[669,682] [2022-07-22 17:54:19,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:54:19,527 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:54:19,536 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/systemc/token_ring.15.cil.c[669,682] [2022-07-22 17:54:19,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:54:19,600 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:54:19,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19 WrapperNode [2022-07-22 17:54:19,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:54:19,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:54:19,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:54:19,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:54:19,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,665 INFO L137 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 914 [2022-07-22 17:54:19,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:54:19,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:54:19,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:54:19,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:54:19,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:54:19,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:54:19,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:54:19,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:54:19,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (1/1) ... [2022-07-22 17:54:19,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:54:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:54:19,744 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) [2022-07-22 17:54:19,765 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 [2022-07-22 17:54:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:54:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:54:19,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:54:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:54:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:54:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:54:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:54:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 17:54:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 17:54:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:54:19,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:54:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:54:19,787 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:54:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:54:19,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:54:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:54:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:54:19,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:54:19,890 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:54:19,892 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:54:20,616 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:54:20,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:54:20,627 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-22 17:54:20,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:54:20 BoogieIcfgContainer [2022-07-22 17:54:20,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:54:20,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:54:20,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:54:20,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:54:20,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:54:19" (1/3) ... [2022-07-22 17:54:20,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8428a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:54:20, skipping insertion in model container [2022-07-22 17:54:20,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:19" (2/3) ... [2022-07-22 17:54:20,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8428a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:54:20, skipping insertion in model container [2022-07-22 17:54:20,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:54:20" (3/3) ... [2022-07-22 17:54:20,640 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.15.cil.c [2022-07-22 17:54:20,653 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:54:20,654 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:54:20,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:54:20,715 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@29ed1de6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59395aa0 [2022-07-22 17:54:20,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:54:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 375 states have (on average 1.6693333333333333) internal successors, (626), 379 states have internal predecessors, (626), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-22 17:54:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:20,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:20,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:20,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2071050250, now seen corresponding path program 1 times [2022-07-22 17:54:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646855851] [2022-07-22 17:54:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:21,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:21,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646855851] [2022-07-22 17:54:21,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646855851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:21,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:21,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:54:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648745537] [2022-07-22 17:54:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:21,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:54:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:54:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:54:21,407 INFO L87 Difference]: Start difference. First operand has 413 states, 375 states have (on average 1.6693333333333333) internal successors, (626), 379 states have internal predecessors, (626), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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) [2022-07-22 17:54:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:23,220 INFO L93 Difference]: Finished difference Result 965 states and 1611 transitions. [2022-07-22 17:54:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:54:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:23,236 INFO L225 Difference]: With dead ends: 965 [2022-07-22 17:54:23,237 INFO L226 Difference]: Without dead ends: 560 [2022-07-22 17:54:23,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:54:23,245 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1113 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1147 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:54:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-22 17:54:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 407. [2022-07-22 17:54:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 371 states have (on average 1.582210242587601) internal successors, (587), 373 states have internal predecessors, (587), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 17:54:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 643 transitions. [2022-07-22 17:54:23,326 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 643 transitions. Word has length 189 [2022-07-22 17:54:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:23,326 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 643 transitions. [2022-07-22 17:54:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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) [2022-07-22 17:54:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 643 transitions. [2022-07-22 17:54:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:23,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:23,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:23,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:54:23,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1618142264, now seen corresponding path program 1 times [2022-07-22 17:54:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123751154] [2022-07-22 17:54:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:23,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123751154] [2022-07-22 17:54:23,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123751154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:23,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:23,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:54:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030971038] [2022-07-22 17:54:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:54:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:54:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:54:23,595 INFO L87 Difference]: Start difference. First operand 407 states and 643 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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) [2022-07-22 17:54:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:26,855 INFO L93 Difference]: Finished difference Result 1505 states and 2426 transitions. [2022-07-22 17:54:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:54:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:26,864 INFO L225 Difference]: With dead ends: 1505 [2022-07-22 17:54:26,864 INFO L226 Difference]: Without dead ends: 1119 [2022-07-22 17:54:26,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:54:26,867 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1680 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:26,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1795 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:54:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-07-22 17:54:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 812. [2022-07-22 17:54:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 747 states have (on average 1.5930388219544847) internal successors, (1190), 750 states have internal predecessors, (1190), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-22 17:54:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1293 transitions. [2022-07-22 17:54:26,957 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1293 transitions. Word has length 189 [2022-07-22 17:54:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:26,957 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1293 transitions. [2022-07-22 17:54:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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) [2022-07-22 17:54:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1293 transitions. [2022-07-22 17:54:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:26,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:26,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:54:26,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -228884172, now seen corresponding path program 1 times [2022-07-22 17:54:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:26,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912348699] [2022-07-22 17:54:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:26,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912348699] [2022-07-22 17:54:27,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912348699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:27,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:27,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47473914] [2022-07-22 17:54:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:27,145 INFO L87 Difference]: Start difference. First operand 812 states and 1293 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:31,044 INFO L93 Difference]: Finished difference Result 2489 states and 4021 transitions. [2022-07-22 17:54:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:31,061 INFO L225 Difference]: With dead ends: 2489 [2022-07-22 17:54:31,062 INFO L226 Difference]: Without dead ends: 1698 [2022-07-22 17:54:31,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:31,088 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 1716 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:31,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 3142 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:54:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-07-22 17:54:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1188. [2022-07-22 17:54:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1094 states have (on average 1.5859232175502742) internal successors, (1735), 1098 states have internal predecessors, (1735), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-22 17:54:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1884 transitions. [2022-07-22 17:54:31,197 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1884 transitions. Word has length 189 [2022-07-22 17:54:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:31,197 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1884 transitions. [2022-07-22 17:54:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1884 transitions. [2022-07-22 17:54:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:31,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:31,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:54:31,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2142832694, now seen corresponding path program 1 times [2022-07-22 17:54:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:31,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193620481] [2022-07-22 17:54:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:31,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193620481] [2022-07-22 17:54:31,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193620481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:31,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:31,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857080783] [2022-07-22 17:54:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:31,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:31,380 INFO L87 Difference]: Start difference. First operand 1188 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:34,959 INFO L93 Difference]: Finished difference Result 3939 states and 6352 transitions. [2022-07-22 17:54:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:34,971 INFO L225 Difference]: With dead ends: 3939 [2022-07-22 17:54:34,971 INFO L226 Difference]: Without dead ends: 2772 [2022-07-22 17:54:34,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:34,975 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 1710 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:34,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 3130 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:54:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-07-22 17:54:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1944. [2022-07-22 17:54:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1792 states have (on average 1.5803571428571428) internal successors, (2832), 1798 states have internal predecessors, (2832), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 17:54:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 3077 transitions. [2022-07-22 17:54:35,123 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 3077 transitions. Word has length 189 [2022-07-22 17:54:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:35,126 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 3077 transitions. [2022-07-22 17:54:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 3077 transitions. [2022-07-22 17:54:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:35,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:35,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:54:35,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1653577800, now seen corresponding path program 1 times [2022-07-22 17:54:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435711636] [2022-07-22 17:54:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:35,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435711636] [2022-07-22 17:54:35,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435711636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:35,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:35,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528694135] [2022-07-22 17:54:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:35,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:35,345 INFO L87 Difference]: Start difference. First operand 1944 states and 3077 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:38,997 INFO L93 Difference]: Finished difference Result 6733 states and 10813 transitions. [2022-07-22 17:54:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:38,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:39,020 INFO L225 Difference]: With dead ends: 6733 [2022-07-22 17:54:39,021 INFO L226 Difference]: Without dead ends: 4810 [2022-07-22 17:54:39,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:39,028 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 1709 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:39,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 3125 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:54:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2022-07-22 17:54:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3457. [2022-07-22 17:54:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3189 states have (on average 1.5760426465976796) internal successors, (5026), 3199 states have internal predecessors, (5026), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-22 17:54:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 5469 transitions. [2022-07-22 17:54:39,299 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 5469 transitions. Word has length 189 [2022-07-22 17:54:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:39,300 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 5469 transitions. [2022-07-22 17:54:39,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 5469 transitions. [2022-07-22 17:54:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:39,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:39,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:39,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:54:39,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1083305994, now seen corresponding path program 1 times [2022-07-22 17:54:39,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:39,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348083880] [2022-07-22 17:54:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:39,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348083880] [2022-07-22 17:54:39,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348083880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:39,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:39,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521150562] [2022-07-22 17:54:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:39,475 INFO L87 Difference]: Start difference. First operand 3457 states and 5469 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:43,226 INFO L93 Difference]: Finished difference Result 12320 states and 19751 transitions. [2022-07-22 17:54:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:43,270 INFO L225 Difference]: With dead ends: 12320 [2022-07-22 17:54:43,271 INFO L226 Difference]: Without dead ends: 8884 [2022-07-22 17:54:43,308 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 [2022-07-22 17:54:43,310 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1708 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:43,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 3120 Invalid, 3428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 17:54:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8884 states. [2022-07-22 17:54:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8884 to 6490. [2022-07-22 17:54:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6490 states, 5990 states have (on average 1.573288814691152) internal successors, (9424), 6008 states have internal predecessors, (9424), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-22 17:54:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6490 states to 6490 states and 10281 transitions. [2022-07-22 17:54:43,790 INFO L78 Accepts]: Start accepts. Automaton has 6490 states and 10281 transitions. Word has length 189 [2022-07-22 17:54:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:43,791 INFO L495 AbstractCegarLoop]: Abstraction has 6490 states and 10281 transitions. [2022-07-22 17:54:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6490 states and 10281 transitions. [2022-07-22 17:54:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:43,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:43,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:43,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:54:43,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:43,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash 320563192, now seen corresponding path program 1 times [2022-07-22 17:54:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:43,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784236310] [2022-07-22 17:54:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:43,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784236310] [2022-07-22 17:54:43,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784236310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:43,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:43,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420016978] [2022-07-22 17:54:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:43,977 INFO L87 Difference]: Start difference. First operand 6490 states and 10281 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:48,096 INFO L93 Difference]: Finished difference Result 23495 states and 37689 transitions. [2022-07-22 17:54:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:48,176 INFO L225 Difference]: With dead ends: 23495 [2022-07-22 17:54:48,177 INFO L226 Difference]: Without dead ends: 17026 [2022-07-22 17:54:48,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:48,209 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1819 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:48,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 2144 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:54:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17026 states. [2022-07-22 17:54:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17026 to 12571. [2022-07-22 17:54:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12571 states, 11607 states have (on average 1.5716378047729818) internal successors, (18242), 11641 states have internal predecessors, (18242), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 17:54:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12571 states to 12571 states and 19981 transitions. [2022-07-22 17:54:49,287 INFO L78 Accepts]: Start accepts. Automaton has 12571 states and 19981 transitions. Word has length 189 [2022-07-22 17:54:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:49,287 INFO L495 AbstractCegarLoop]: Abstraction has 12571 states and 19981 transitions. [2022-07-22 17:54:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12571 states and 19981 transitions. [2022-07-22 17:54:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:49,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:49,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:49,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:54:49,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash -465434698, now seen corresponding path program 1 times [2022-07-22 17:54:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030799969] [2022-07-22 17:54:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:49,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:49,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030799969] [2022-07-22 17:54:49,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030799969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:49,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:49,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290182941] [2022-07-22 17:54:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:49,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:49,494 INFO L87 Difference]: Start difference. First operand 12571 states and 19981 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:54,612 INFO L93 Difference]: Finished difference Result 45846 states and 73759 transitions. [2022-07-22 17:54:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:54:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:54:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:54,756 INFO L225 Difference]: With dead ends: 45846 [2022-07-22 17:54:54,756 INFO L226 Difference]: Without dead ends: 33296 [2022-07-22 17:54:54,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:54,814 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 1706 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:54,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 3110 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 17:54:54,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33296 states. [2022-07-22 17:54:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33296 to 24764. [2022-07-22 17:54:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24764 states, 22872 states have (on average 1.5706540748513467) internal successors, (35924), 22938 states have internal predecessors, (35924), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-22 17:54:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24764 states to 24764 states and 39589 transitions. [2022-07-22 17:54:56,699 INFO L78 Accepts]: Start accepts. Automaton has 24764 states and 39589 transitions. Word has length 189 [2022-07-22 17:54:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:56,700 INFO L495 AbstractCegarLoop]: Abstraction has 24764 states and 39589 transitions. [2022-07-22 17:54:56,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:54:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 24764 states and 39589 transitions. [2022-07-22 17:54:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:54:56,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:56,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:54:56,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 201947192, now seen corresponding path program 1 times [2022-07-22 17:54:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:56,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588440857] [2022-07-22 17:54:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:54:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:54:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:54:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:54:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588440857] [2022-07-22 17:54:56,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588440857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:56,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:56,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746466065] [2022-07-22 17:54:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:56,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:56,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:56,895 INFO L87 Difference]: Start difference. First operand 24764 states and 39589 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:04,603 INFO L93 Difference]: Finished difference Result 90549 states and 146501 transitions. [2022-07-22 17:55:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:55:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:55:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:04,920 INFO L225 Difference]: With dead ends: 90549 [2022-07-22 17:55:04,920 INFO L226 Difference]: Without dead ends: 65806 [2022-07-22 17:55:05,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:55:05,143 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 1705 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:05,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 3105 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:55:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65806 states. [2022-07-22 17:55:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65806 to 49213. [2022-07-22 17:55:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49213 states, 45465 states have (on average 1.570042890135269) internal successors, (71382), 45595 states have internal predecessors, (71382), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 17:55:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49213 states to 49213 states and 79385 transitions. [2022-07-22 17:55:08,377 INFO L78 Accepts]: Start accepts. Automaton has 49213 states and 79385 transitions. Word has length 189 [2022-07-22 17:55:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:08,377 INFO L495 AbstractCegarLoop]: Abstraction has 49213 states and 79385 transitions. [2022-07-22 17:55:08,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 49213 states and 79385 transitions. [2022-07-22 17:55:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:55:08,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:08,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:55:08,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1993281674, now seen corresponding path program 1 times [2022-07-22 17:55:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179699132] [2022-07-22 17:55:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:55:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:55:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:55:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:55:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179699132] [2022-07-22 17:55:08,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179699132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:08,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:08,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980519887] [2022-07-22 17:55:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:08,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:08,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:08,571 INFO L87 Difference]: Start difference. First operand 49213 states and 79385 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:15,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:15,497 INFO L93 Difference]: Finished difference Result 116159 states and 190624 transitions. [2022-07-22 17:55:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:55:15,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:55:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:15,764 INFO L225 Difference]: With dead ends: 116159 [2022-07-22 17:55:15,765 INFO L226 Difference]: Without dead ends: 66967 [2022-07-22 17:55:15,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:55:15,915 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1219 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:15,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1695 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:55:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66967 states. [2022-07-22 17:55:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66967 to 49213. [2022-07-22 17:55:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49213 states, 45465 states have (on average 1.5672055427251732) internal successors, (71253), 45595 states have internal predecessors, (71253), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 17:55:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49213 states to 49213 states and 79256 transitions. [2022-07-22 17:55:19,757 INFO L78 Accepts]: Start accepts. Automaton has 49213 states and 79256 transitions. Word has length 189 [2022-07-22 17:55:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:19,758 INFO L495 AbstractCegarLoop]: Abstraction has 49213 states and 79256 transitions. [2022-07-22 17:55:19,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 49213 states and 79256 transitions. [2022-07-22 17:55:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:55:19,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:19,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:55:19,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1648453512, now seen corresponding path program 1 times [2022-07-22 17:55:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031430599] [2022-07-22 17:55:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:55:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:55:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:55:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:55:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031430599] [2022-07-22 17:55:19,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031430599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:19,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560203788] [2022-07-22 17:55:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:19,969 INFO L87 Difference]: Start difference. First operand 49213 states and 79256 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:33,237 INFO L93 Difference]: Finished difference Result 179696 states and 292671 transitions. [2022-07-22 17:55:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:55:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 189 [2022-07-22 17:55:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:33,767 INFO L225 Difference]: With dead ends: 179696 [2022-07-22 17:55:33,767 INFO L226 Difference]: Without dead ends: 130504 [2022-07-22 17:55:33,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:55:33,950 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 1696 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:33,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 3088 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:55:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130504 states. [2022-07-22 17:55:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130504 to 98496. [2022-07-22 17:55:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98496 states, 91036 states have (on average 1.566621995694011) internal successors, (142619), 91294 states have internal predecessors, (142619), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-22 17:55:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98496 states to 98496 states and 160756 transitions. [2022-07-22 17:55:41,730 INFO L78 Accepts]: Start accepts. Automaton has 98496 states and 160756 transitions. Word has length 189 [2022-07-22 17:55:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:41,730 INFO L495 AbstractCegarLoop]: Abstraction has 98496 states and 160756 transitions. [2022-07-22 17:55:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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) [2022-07-22 17:55:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 98496 states and 160756 transitions. [2022-07-22 17:55:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 17:55:41,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:41,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:55:41,783 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 877042170, now seen corresponding path program 1 times [2022-07-22 17:55:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115765468] [2022-07-22 17:55:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:55:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:55:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 17:55:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:55:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:41,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115765468] [2022-07-22 17:55:41,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115765468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:41,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:41,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419153394] [2022-07-22 17:55:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:41,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:41,953 INFO L87 Difference]: Start difference. First operand 98496 states and 160756 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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)