./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label15.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/eca-rers2012/Problem12_label15.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 c74a9fc611cd640e8aacda017f0a1ef6db7219ef212e2ffc5499141a277c3acd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:25:08,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:25:08,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:25:08,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:25:08,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:25:08,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:25:08,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:25:08,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:25:08,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:25:08,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:25:08,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:25:08,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:25:08,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:25:08,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:25:08,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:25:08,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:25:08,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:25:08,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:25:08,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:25:08,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:25:08,926 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:25:08,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:25:08,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:25:08,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:25:08,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:25:08,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:25:08,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:25:08,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:25:08,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:25:08,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:25:08,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:25:08,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:25:08,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:25:08,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:25:08,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:25:08,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:25:08,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:25:08,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:25:08,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:25:08,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:25:08,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:25:08,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:25:09,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:25:09,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:25:09,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:25:09,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:25:09,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:25:09,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:25:09,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:25:09,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:25:09,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:25:09,019 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:25:09,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:25:09,020 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:25:09,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:25:09,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:25:09,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:25:09,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:25:09,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:25:09,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:25:09,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:25:09,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:25:09,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:25:09,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:25:09,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:25:09,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:25:09,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c74a9fc611cd640e8aacda017f0a1ef6db7219ef212e2ffc5499141a277c3acd [2022-07-22 12:25:09,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:25:09,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:25:09,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:25:09,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:25:09,360 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:25:09,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label15.c [2022-07-22 12:25:09,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ba6c96e/40b8dd703ca64411adc0ee7b3364907a/FLAG09001387e [2022-07-22 12:25:09,953 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:25:09,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label15.c [2022-07-22 12:25:09,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ba6c96e/40b8dd703ca64411adc0ee7b3364907a/FLAG09001387e [2022-07-22 12:25:10,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ba6c96e/40b8dd703ca64411adc0ee7b3364907a [2022-07-22 12:25:10,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:25:10,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:25:10,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:25:10,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:25:10,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:25:10,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:25:10" (1/1) ... [2022-07-22 12:25:10,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2147dccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:10, skipping insertion in model container [2022-07-22 12:25:10,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:25:10" (1/1) ... [2022-07-22 12:25:10,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:25:10,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:25:10,780 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/eca-rers2012/Problem12_label15.c[6730,6743] [2022-07-22 12:25:11,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:25:11,361 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:25:11,379 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/eca-rers2012/Problem12_label15.c[6730,6743] [2022-07-22 12:25:11,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:25:11,766 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:25:11,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11 WrapperNode [2022-07-22 12:25:11,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:25:11,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:25:11,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:25:11,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:25:11,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:11,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,079 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-22 12:25:12,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:25:12,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:25:12,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:25:12,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:25:12,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:25:12,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:25:12,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:25:12,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:25:12,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (1/1) ... [2022-07-22 12:25:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:25:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:12,473 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 12:25:12,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:25:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:25:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:25:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:25:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:25:12,642 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:25:12,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:25:15,380 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:25:15,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:25:15,390 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:25:15,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:25:15 BoogieIcfgContainer [2022-07-22 12:25:15,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:25:15,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:25:15,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:25:15,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:25:15,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:25:10" (1/3) ... [2022-07-22 12:25:15,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01b709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:25:15, skipping insertion in model container [2022-07-22 12:25:15,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:25:11" (2/3) ... [2022-07-22 12:25:15,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01b709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:25:15, skipping insertion in model container [2022-07-22 12:25:15,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:25:15" (3/3) ... [2022-07-22 12:25:15,399 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label15.c [2022-07-22 12:25:15,408 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:25:15,408 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:25:15,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:25:15,460 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@1b3bd14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55d52322 [2022-07-22 12:25:15,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:25:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 12:25:15,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:15,473 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] [2022-07-22 12:25:15,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:15,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2022-07-22 12:25:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:15,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244483262] [2022-07-22 12:25:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:15,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:15,687 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 12:25:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:15,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244483262] [2022-07-22 12:25:15,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244483262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:15,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:15,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726159970] [2022-07-22 12:25:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:15,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:25:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:25:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:25:15,733 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:20,445 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2022-07-22 12:25:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 12:25:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-22 12:25:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:20,472 INFO L225 Difference]: With dead ends: 3155 [2022-07-22 12:25:20,473 INFO L226 Difference]: Without dead ends: 2265 [2022-07-22 12:25:20,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:25:20,482 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2383 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1724 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:20,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 234 Invalid, 5458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1724 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 12:25:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-07-22 12:25:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2022-07-22 12:25:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2022-07-22 12:25:20,617 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 54 [2022-07-22 12:25:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:20,618 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2022-07-22 12:25:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2022-07-22 12:25:20,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-22 12:25:20,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:20,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:20,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:25:20,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash -653035601, now seen corresponding path program 1 times [2022-07-22 12:25:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:20,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775514533] [2022-07-22 12:25:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 12:25:20,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:20,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775514533] [2022-07-22 12:25:20,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775514533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:20,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:20,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325511064] [2022-07-22 12:25:20,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:20,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:25:20,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:20,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:25:20,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:25:20,868 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:23,899 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2022-07-22 12:25:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:25:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2022-07-22 12:25:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:23,942 INFO L225 Difference]: With dead ends: 6051 [2022-07-22 12:25:23,946 INFO L226 Difference]: Without dead ends: 3759 [2022-07-22 12:25:23,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:25:23,952 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:23,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:25:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-07-22 12:25:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2022-07-22 12:25:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2022-07-22 12:25:23,999 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 194 [2022-07-22 12:25:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:24,002 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2022-07-22 12:25:24,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2022-07-22 12:25:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-22 12:25:24,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:24,009 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:24,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:25:24,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1501609534, now seen corresponding path program 1 times [2022-07-22 12:25:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:24,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330821149] [2022-07-22 12:25:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:24,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 12:25:24,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:24,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330821149] [2022-07-22 12:25:24,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330821149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:24,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:24,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:25:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35565317] [2022-07-22 12:25:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:24,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:24,171 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:26,513 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2022-07-22 12:25:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-07-22 12:25:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:26,537 INFO L225 Difference]: With dead ends: 10520 [2022-07-22 12:25:26,537 INFO L226 Difference]: Without dead ends: 6763 [2022-07-22 12:25:26,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:26,549 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:26,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:25:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-07-22 12:25:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2022-07-22 12:25:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2022-07-22 12:25:26,675 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 264 [2022-07-22 12:25:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:26,677 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2022-07-22 12:25:26,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2022-07-22 12:25:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-22 12:25:26,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:26,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:25:26,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash -436238599, now seen corresponding path program 1 times [2022-07-22 12:25:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:26,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512394643] [2022-07-22 12:25:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 103 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 12:25:26,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:26,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512394643] [2022-07-22 12:25:26,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512394643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:25:26,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724094704] [2022-07-22 12:25:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:26,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:26,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:26,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:25:26,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:25:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:25:27,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:25:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:25:27,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:25:27,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724094704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:27,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:25:27,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 12:25:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043935353] [2022-07-22 12:25:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:25:27,216 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:29,919 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2022-07-22 12:25:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2022-07-22 12:25:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:29,944 INFO L225 Difference]: With dead ends: 15026 [2022-07-22 12:25:29,944 INFO L226 Difference]: Without dead ends: 9016 [2022-07-22 12:25:29,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:25:29,954 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:29,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:25:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2022-07-22 12:25:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2022-07-22 12:25:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2022-07-22 12:25:30,075 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 277 [2022-07-22 12:25:30,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:30,076 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2022-07-22 12:25:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2022-07-22 12:25:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-22 12:25:30,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:30,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:30,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:25:30,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:30,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -829867597, now seen corresponding path program 1 times [2022-07-22 12:25:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:30,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709403748] [2022-07-22 12:25:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:30,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 12:25:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709403748] [2022-07-22 12:25:30,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709403748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:30,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:30,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623216802] [2022-07-22 12:25:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:30,443 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:33,396 INFO L93 Difference]: Finished difference Result 25540 states and 32713 transitions. [2022-07-22 12:25:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:33,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2022-07-22 12:25:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:33,438 INFO L225 Difference]: With dead ends: 25540 [2022-07-22 12:25:33,438 INFO L226 Difference]: Without dead ends: 16526 [2022-07-22 12:25:33,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:33,454 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:33,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1325 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:25:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-07-22 12:25:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2022-07-22 12:25:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2523773297831875) internal successors, (19755), 15774 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19755 transitions. [2022-07-22 12:25:33,728 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19755 transitions. Word has length 294 [2022-07-22 12:25:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:33,728 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 19755 transitions. [2022-07-22 12:25:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19755 transitions. [2022-07-22 12:25:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-07-22 12:25:33,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:33,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:33,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:25:33,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1769336259, now seen corresponding path program 1 times [2022-07-22 12:25:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:33,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896127896] [2022-07-22 12:25:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:33,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 12:25:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896127896] [2022-07-22 12:25:33,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896127896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:33,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:33,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401574716] [2022-07-22 12:25:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:33,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:33,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:33,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:33,950 INFO L87 Difference]: Start difference. First operand 15775 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:36,838 INFO L93 Difference]: Finished difference Result 38307 states and 48288 transitions. [2022-07-22 12:25:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:36,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2022-07-22 12:25:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:36,897 INFO L225 Difference]: With dead ends: 38307 [2022-07-22 12:25:36,898 INFO L226 Difference]: Without dead ends: 22534 [2022-07-22 12:25:36,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:36,916 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:36,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:25:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-07-22 12:25:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2022-07-22 12:25:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2340567168153376) internal successors, (27807), 22533 states have internal predecessors, (27807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27807 transitions. [2022-07-22 12:25:37,233 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27807 transitions. Word has length 343 [2022-07-22 12:25:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:37,234 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 27807 transitions. [2022-07-22 12:25:37,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27807 transitions. [2022-07-22 12:25:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-22 12:25:37,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:37,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:25:37,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1851360552, now seen corresponding path program 1 times [2022-07-22 12:25:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189237254] [2022-07-22 12:25:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:37,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 12:25:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:37,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189237254] [2022-07-22 12:25:37,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189237254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:37,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323020900] [2022-07-22 12:25:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:37,362 INFO L87 Difference]: Start difference. First operand 22534 states and 27807 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:40,844 INFO L93 Difference]: Finished difference Result 45066 states and 55612 transitions. [2022-07-22 12:25:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:40,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2022-07-22 12:25:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:40,906 INFO L225 Difference]: With dead ends: 45066 [2022-07-22 12:25:40,907 INFO L226 Difference]: Without dead ends: 22534 [2022-07-22 12:25:40,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:40,934 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 737 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:40,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 187 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 12:25:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-07-22 12:25:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2022-07-22 12:25:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2210091865264279) internal successors, (27513), 22533 states have internal predecessors, (27513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27513 transitions. [2022-07-22 12:25:41,247 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27513 transitions. Word has length 348 [2022-07-22 12:25:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:41,264 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 27513 transitions. [2022-07-22 12:25:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27513 transitions. [2022-07-22 12:25:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-07-22 12:25:41,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:41,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:41,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:25:41,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash -14553240, now seen corresponding path program 1 times [2022-07-22 12:25:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:41,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725969240] [2022-07-22 12:25:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 12:25:41,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:41,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725969240] [2022-07-22 12:25:41,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725969240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:41,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:41,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433023213] [2022-07-22 12:25:41,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:41,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:41,388 INFO L87 Difference]: Start difference. First operand 22534 states and 27513 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:44,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:44,667 INFO L93 Difference]: Finished difference Result 60837 states and 75395 transitions. [2022-07-22 12:25:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:44,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2022-07-22 12:25:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:44,716 INFO L225 Difference]: With dead ends: 60837 [2022-07-22 12:25:44,717 INFO L226 Difference]: Without dead ends: 38305 [2022-07-22 12:25:44,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:44,752 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 722 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:44,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 424 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 12:25:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2022-07-22 12:25:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 38305. [2022-07-22 12:25:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38305 states, 38304 states have (on average 1.2043650793650793) internal successors, (46132), 38304 states have internal predecessors, (46132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38305 states to 38305 states and 46132 transitions. [2022-07-22 12:25:45,309 INFO L78 Accepts]: Start accepts. Automaton has 38305 states and 46132 transitions. Word has length 359 [2022-07-22 12:25:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:45,309 INFO L495 AbstractCegarLoop]: Abstraction has 38305 states and 46132 transitions. [2022-07-22 12:25:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 38305 states and 46132 transitions. [2022-07-22 12:25:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-22 12:25:45,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:45,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:25:45,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1763235576, now seen corresponding path program 1 times [2022-07-22 12:25:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:45,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70146247] [2022-07-22 12:25:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 339 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:25:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:45,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70146247] [2022-07-22 12:25:45,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70146247] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:25:45,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665300890] [2022-07-22 12:25:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:45,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:45,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:25:45,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:25:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:45,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:25:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:25:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:25:47,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:25:47,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665300890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:47,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:25:47,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-22 12:25:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526524962] [2022-07-22 12:25:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:25:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:25:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:25:47,203 INFO L87 Difference]: Start difference. First operand 38305 states and 46132 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:50,074 INFO L93 Difference]: Finished difference Result 83369 states and 99369 transitions. [2022-07-22 12:25:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:25:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2022-07-22 12:25:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:50,169 INFO L225 Difference]: With dead ends: 83369 [2022-07-22 12:25:50,170 INFO L226 Difference]: Without dead ends: 83367 [2022-07-22 12:25:50,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:25:50,196 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1904 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 6454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3794 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:50,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 30 Invalid, 6454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2380 Invalid, 0 Unknown, 3794 Unchecked, 2.5s Time] [2022-07-22 12:25:50,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83367 states. [2022-07-22 12:25:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83367 to 82614. [2022-07-22 12:25:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82614 states, 82613 states have (on average 1.1933351893769746) internal successors, (98585), 82613 states have internal predecessors, (98585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82614 states to 82614 states and 98585 transitions. [2022-07-22 12:25:51,086 INFO L78 Accepts]: Start accepts. Automaton has 82614 states and 98585 transitions. Word has length 385 [2022-07-22 12:25:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:51,087 INFO L495 AbstractCegarLoop]: Abstraction has 82614 states and 98585 transitions. [2022-07-22 12:25:51,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 82614 states and 98585 transitions. [2022-07-22 12:25:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-07-22 12:25:51,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:51,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:51,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:25:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 12:25:51,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1465652963, now seen corresponding path program 1 times [2022-07-22 12:25:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123250850] [2022-07-22 12:25:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 12:25:51,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:51,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123250850] [2022-07-22 12:25:51,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123250850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:51,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:51,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:51,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081300869] [2022-07-22 12:25:51,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:51,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:51,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:51,438 INFO L87 Difference]: Start difference. First operand 82614 states and 98585 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:54,620 INFO L93 Difference]: Finished difference Result 193764 states and 232973 transitions. [2022-07-22 12:25:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2022-07-22 12:25:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:54,813 INFO L225 Difference]: With dead ends: 193764 [2022-07-22 12:25:54,813 INFO L226 Difference]: Without dead ends: 111903 [2022-07-22 12:25:54,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:54,859 INFO L413 NwaCegarLoop]: 1260 mSDtfsCounter, 693 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:54,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1268 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:25:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111903 states. [2022-07-22 12:25:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111903 to 111152. [2022-07-22 12:25:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111152 states, 111151 states have (on average 1.1645419294473285) internal successors, (129440), 111151 states have internal predecessors, (129440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111152 states to 111152 states and 129440 transitions. [2022-07-22 12:25:56,219 INFO L78 Accepts]: Start accepts. Automaton has 111152 states and 129440 transitions. Word has length 386 [2022-07-22 12:25:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:56,220 INFO L495 AbstractCegarLoop]: Abstraction has 111152 states and 129440 transitions. [2022-07-22 12:25:56,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 111152 states and 129440 transitions. [2022-07-22 12:25:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-07-22 12:25:56,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:56,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:56,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:25:56,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:56,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash -352558693, now seen corresponding path program 1 times [2022-07-22 12:25:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:56,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107047933] [2022-07-22 12:25:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:56,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 12:25:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107047933] [2022-07-22 12:25:56,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107047933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:56,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:56,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654671556] [2022-07-22 12:25:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:56,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:56,342 INFO L87 Difference]: Start difference. First operand 111152 states and 129440 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:59,280 INFO L93 Difference]: Finished difference Result 260603 states and 302428 transitions. [2022-07-22 12:25:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-07-22 12:25:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:59,639 INFO L225 Difference]: With dead ends: 260603 [2022-07-22 12:25:59,639 INFO L226 Difference]: Without dead ends: 150204 [2022-07-22 12:25:59,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:59,666 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 686 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:59,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1310 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:25:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150204 states. [2022-07-22 12:26:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150204 to 141943. [2022-07-22 12:26:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141943 states, 141942 states have (on average 1.1375843654450408) internal successors, (161471), 141942 states have internal predecessors, (161471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141943 states to 141943 states and 161471 transitions. [2022-07-22 12:26:01,518 INFO L78 Accepts]: Start accepts. Automaton has 141943 states and 161471 transitions. Word has length 438 [2022-07-22 12:26:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:01,518 INFO L495 AbstractCegarLoop]: Abstraction has 141943 states and 161471 transitions. [2022-07-22 12:26:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 141943 states and 161471 transitions. [2022-07-22 12:26:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-07-22 12:26:01,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:01,526 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:01,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:26:01,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 258597530, now seen corresponding path program 1 times [2022-07-22 12:26:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459524509] [2022-07-22 12:26:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:01,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:26:01,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:01,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459524509] [2022-07-22 12:26:01,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459524509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:01,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:01,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048747475] [2022-07-22 12:26:01,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:01,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:01,663 INFO L87 Difference]: Start difference. First operand 141943 states and 161471 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:04,781 INFO L93 Difference]: Finished difference Result 302659 states and 343362 transitions. [2022-07-22 12:26:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2022-07-22 12:26:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:05,014 INFO L225 Difference]: With dead ends: 302659 [2022-07-22 12:26:05,014 INFO L226 Difference]: Without dead ends: 161469 [2022-07-22 12:26:05,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:05,073 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 803 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:05,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 916 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 12:26:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161469 states. [2022-07-22 12:26:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161469 to 152457. [2022-07-22 12:26:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152457 states, 152456 states have (on average 1.115043028808312) internal successors, (169995), 152456 states have internal predecessors, (169995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152457 states to 152457 states and 169995 transitions. [2022-07-22 12:26:07,084 INFO L78 Accepts]: Start accepts. Automaton has 152457 states and 169995 transitions. Word has length 450 [2022-07-22 12:26:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:07,084 INFO L495 AbstractCegarLoop]: Abstraction has 152457 states and 169995 transitions. [2022-07-22 12:26:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 152457 states and 169995 transitions. [2022-07-22 12:26:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-07-22 12:26:07,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:07,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:26:07,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1217174117, now seen corresponding path program 1 times [2022-07-22 12:26:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:07,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079626855] [2022-07-22 12:26:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 12:26:07,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079626855] [2022-07-22 12:26:07,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079626855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:07,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:07,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:07,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511036537] [2022-07-22 12:26:07,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:07,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:07,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:07,219 INFO L87 Difference]: Start difference. First operand 152457 states and 169995 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:10,450 INFO L93 Difference]: Finished difference Result 307916 states and 343014 transitions. [2022-07-22 12:26:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2022-07-22 12:26:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:10,670 INFO L225 Difference]: With dead ends: 307916 [2022-07-22 12:26:10,670 INFO L226 Difference]: Without dead ends: 156212 [2022-07-22 12:26:10,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:10,744 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 681 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:10,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 220 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:26:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156212 states. [2022-07-22 12:26:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156212 to 152457. [2022-07-22 12:26:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152457 states, 152456 states have (on average 1.0913247100802854) internal successors, (166379), 152456 states have internal predecessors, (166379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152457 states to 152457 states and 166379 transitions. [2022-07-22 12:26:12,667 INFO L78 Accepts]: Start accepts. Automaton has 152457 states and 166379 transitions. Word has length 494 [2022-07-22 12:26:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:12,668 INFO L495 AbstractCegarLoop]: Abstraction has 152457 states and 166379 transitions. [2022-07-22 12:26:12,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 152457 states and 166379 transitions. [2022-07-22 12:26:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-07-22 12:26:12,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:12,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:26:12,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash 88206328, now seen corresponding path program 1 times [2022-07-22 12:26:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:12,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394065014] [2022-07-22 12:26:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 12:26:13,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:13,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394065014] [2022-07-22 12:26:13,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394065014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:13,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:13,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:13,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178512757] [2022-07-22 12:26:13,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:13,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:13,119 INFO L87 Difference]: Start difference. First operand 152457 states and 166379 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:16,070 INFO L93 Difference]: Finished difference Result 304161 states and 332000 transitions. [2022-07-22 12:26:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 516 [2022-07-22 12:26:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:16,289 INFO L225 Difference]: With dead ends: 304161 [2022-07-22 12:26:16,289 INFO L226 Difference]: Without dead ends: 152457 [2022-07-22 12:26:16,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:16,377 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 567 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:16,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1284 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:26:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152457 states. [2022-07-22 12:26:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152457 to 152457. [2022-07-22 12:26:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152457 states, 152456 states have (on average 1.0697775095765336) internal successors, (163094), 152456 states have internal predecessors, (163094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152457 states to 152457 states and 163094 transitions. [2022-07-22 12:26:18,275 INFO L78 Accepts]: Start accepts. Automaton has 152457 states and 163094 transitions. Word has length 516 [2022-07-22 12:26:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:18,276 INFO L495 AbstractCegarLoop]: Abstraction has 152457 states and 163094 transitions. [2022-07-22 12:26:18,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 152457 states and 163094 transitions. [2022-07-22 12:26:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-07-22 12:26:18,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:18,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:18,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:26:18,286 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -199630726, now seen corresponding path program 1 times [2022-07-22 12:26:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826986801] [2022-07-22 12:26:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 12:26:18,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:18,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826986801] [2022-07-22 12:26:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826986801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:18,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:18,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:18,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311965040] [2022-07-22 12:26:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:18,419 INFO L87 Difference]: Start difference. First operand 152457 states and 163094 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:21,675 INFO L93 Difference]: Finished difference Result 343213 states and 367787 transitions. [2022-07-22 12:26:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:21,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2022-07-22 12:26:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:21,955 INFO L225 Difference]: With dead ends: 343213 [2022-07-22 12:26:21,955 INFO L226 Difference]: Without dead ends: 191509 [2022-07-22 12:26:22,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:22,041 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 676 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:22,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 105 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:26:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191509 states. [2022-07-22 12:26:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191509 to 191509. [2022-07-22 12:26:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191509 states, 191508 states have (on average 1.0624255905758506) internal successors, (203463), 191508 states have internal predecessors, (203463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191509 states to 191509 states and 203463 transitions. [2022-07-22 12:26:24,393 INFO L78 Accepts]: Start accepts. Automaton has 191509 states and 203463 transitions. Word has length 531 [2022-07-22 12:26:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:24,393 INFO L495 AbstractCegarLoop]: Abstraction has 191509 states and 203463 transitions. [2022-07-22 12:26:24,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 191509 states and 203463 transitions. [2022-07-22 12:26:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-07-22 12:26:24,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:24,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:24,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:26:24,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -935824829, now seen corresponding path program 1 times [2022-07-22 12:26:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:24,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355664896] [2022-07-22 12:26:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 234 proven. 391 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-22 12:26:24,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:24,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355664896] [2022-07-22 12:26:24,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355664896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:26:24,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384807408] [2022-07-22 12:26:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:24,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:26:24,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:26:24,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:26:24,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 12:26:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:25,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:26:25,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:26:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-22 12:26:25,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:26:25,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384807408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:25,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:26:25,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-22 12:26:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008661805] [2022-07-22 12:26:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:25,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:26:25,068 INFO L87 Difference]: Start difference. First operand 191509 states and 203463 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:28,002 INFO L93 Difference]: Finished difference Result 343964 states and 365670 transitions. [2022-07-22 12:26:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 535 [2022-07-22 12:26:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:28,222 INFO L225 Difference]: With dead ends: 343964 [2022-07-22 12:26:28,222 INFO L226 Difference]: Without dead ends: 153208 [2022-07-22 12:26:28,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:26:28,308 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 808 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:28,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1136 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 12:26:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153208 states. [2022-07-22 12:26:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153208 to 93128. [2022-07-22 12:26:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93128 states, 93127 states have (on average 1.0552471356319864) internal successors, (98272), 93127 states have internal predecessors, (98272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93128 states to 93128 states and 98272 transitions. [2022-07-22 12:26:29,730 INFO L78 Accepts]: Start accepts. Automaton has 93128 states and 98272 transitions. Word has length 535 [2022-07-22 12:26:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:29,730 INFO L495 AbstractCegarLoop]: Abstraction has 93128 states and 98272 transitions. [2022-07-22 12:26:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 93128 states and 98272 transitions. [2022-07-22 12:26:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-07-22 12:26:29,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:29,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:29,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 12:26:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:26:29,941 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 666337407, now seen corresponding path program 1 times [2022-07-22 12:26:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439778305] [2022-07-22 12:26:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 12:26:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439778305] [2022-07-22 12:26:30,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439778305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:30,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:30,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851032229] [2022-07-22 12:26:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:30,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:30,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:30,050 INFO L87 Difference]: Start difference. First operand 93128 states and 98272 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:32,773 INFO L93 Difference]: Finished difference Result 190760 states and 201110 transitions. [2022-07-22 12:26:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 542 [2022-07-22 12:26:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:32,880 INFO L225 Difference]: With dead ends: 190760 [2022-07-22 12:26:32,880 INFO L226 Difference]: Without dead ends: 96883 [2022-07-22 12:26:32,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:32,932 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:32,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1012 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:26:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96883 states. [2022-07-22 12:26:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96883 to 87871. [2022-07-22 12:26:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87871 states, 87870 states have (on average 1.0475361329236372) internal successors, (92047), 87870 states have internal predecessors, (92047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87871 states to 87871 states and 92047 transitions. [2022-07-22 12:26:33,980 INFO L78 Accepts]: Start accepts. Automaton has 87871 states and 92047 transitions. Word has length 542 [2022-07-22 12:26:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 87871 states and 92047 transitions. [2022-07-22 12:26:33,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 87871 states and 92047 transitions. [2022-07-22 12:26:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-07-22 12:26:33,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:33,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:26:33,992 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2097834033, now seen corresponding path program 1 times [2022-07-22 12:26:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:33,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763255910] [2022-07-22 12:26:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:26:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 783 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 12:26:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:26:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763255910] [2022-07-22 12:26:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763255910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:26:34,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:26:34,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:26:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25813792] [2022-07-22 12:26:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:26:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:26:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:26:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:26:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:34,123 INFO L87 Difference]: Start difference. First operand 87871 states and 92047 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:26:36,950 INFO L93 Difference]: Finished difference Result 182499 states and 191058 transitions. [2022-07-22 12:26:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:26:36,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 607 [2022-07-22 12:26:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:26:37,067 INFO L225 Difference]: With dead ends: 182499 [2022-07-22 12:26:37,067 INFO L226 Difference]: Without dead ends: 95381 [2022-07-22 12:26:37,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:26:37,124 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:26:37,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1267 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:26:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95381 states. [2022-07-22 12:26:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95381 to 93128. [2022-07-22 12:26:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93128 states, 93127 states have (on average 1.0444124689939545) internal successors, (97263), 93127 states have internal predecessors, (97263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93128 states to 93128 states and 97263 transitions. [2022-07-22 12:26:38,195 INFO L78 Accepts]: Start accepts. Automaton has 93128 states and 97263 transitions. Word has length 607 [2022-07-22 12:26:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:26:38,196 INFO L495 AbstractCegarLoop]: Abstraction has 93128 states and 97263 transitions. [2022-07-22 12:26:38,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:26:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 93128 states and 97263 transitions. [2022-07-22 12:26:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-07-22 12:26:38,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:26:38,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:26:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:26:38,205 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:26:38,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:26:38,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1602190421, now seen corresponding path program 1 times [2022-07-22 12:26:38,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:26:38,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781580594] [2022-07-22 12:26:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:26:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:26:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat