./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d94a0143393d3950a5bf091072c53e220b7412d84326b758d723e55ee9dd42c8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:26:17,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:26:17,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:26:17,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:26:17,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:26:17,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:26:17,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:26:17,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:26:17,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:26:17,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:26:17,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:26:17,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:26:17,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:26:17,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:26:17,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:26:17,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:26:17,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:26:17,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:26:17,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:26:17,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:26:17,547 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:26:17,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:26:17,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:26:17,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:26:17,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:26:17,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:26:17,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:26:17,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:26:17,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:26:17,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:26:17,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:26:17,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:26:17,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:26:17,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:26:17,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:26:17,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:26:17,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:26:17,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:26:17,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:26:17,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:26:17,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:26:17,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:26:17,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:26:17,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:26:17,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:26:17,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:26:17,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:26:17,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:26:17,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:26:17,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:26:17,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:26:17,611 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:26:17,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:26:17,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:26:17,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:26:17,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:26:17,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:26:17,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:26:17,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:26:17,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:26:17,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:26:17,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:26:17,614 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:26:17,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:26:17,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:26:17,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:26:17,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:26:17,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:26:17,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:26:17,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:26:17,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:26:17,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:26:17,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:26:17,617 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:26:17,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:26:17,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:26:17,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94a0143393d3950a5bf091072c53e220b7412d84326b758d723e55ee9dd42c8 [2022-07-12 08:26:17,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:26:17,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:26:17,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:26:17,878 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:26:17,879 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:26:17,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c [2022-07-12 08:26:17,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dabed87f3/32036754cc3b4dc8a69fe332c74a37b9/FLAG1a4d384e7 [2022-07-12 08:26:18,791 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:26:18,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c [2022-07-12 08:26:18,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dabed87f3/32036754cc3b4dc8a69fe332c74a37b9/FLAG1a4d384e7 [2022-07-12 08:26:18,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dabed87f3/32036754cc3b4dc8a69fe332c74a37b9 [2022-07-12 08:26:18,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:26:18,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:26:18,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:26:18,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:26:18,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:26:18,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:26:18" (1/1) ... [2022-07-12 08:26:18,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3375e88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:18, skipping insertion in model container [2022-07-12 08:26:18,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:26:18" (1/1) ... [2022-07-12 08:26:18,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:26:19,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:26:20,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[375709,375722] [2022-07-12 08:26:20,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[383339,383352] [2022-07-12 08:26:20,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:26:20,986 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:26:21,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[375709,375722] [2022-07-12 08:26:21,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[383339,383352] [2022-07-12 08:26:21,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:26:21,979 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:26:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21 WrapperNode [2022-07-12 08:26:21,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:26:21,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:26:21,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:26:21,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:26:21,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,423 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2022-07-12 08:26:22,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:26:22,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:26:22,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:26:22,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:26:22,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:26:22,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:26:22,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:26:22,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:26:22,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (1/1) ... [2022-07-12 08:26:22,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:26:22,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:22,904 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) [2022-07-12 08:26:22,924 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 [2022-07-12 08:26:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:26:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:26:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:26:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:26:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:26:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:26:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:26:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:26:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:26:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:26:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:26:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:26:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:26:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:26:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:26:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:26:23,104 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:26:23,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:26:29,123 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:26:29,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:26:29,152 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-12 08:26:29,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:26:29 BoogieIcfgContainer [2022-07-12 08:26:29,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:26:29,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:26:29,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:26:29,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:26:29,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:26:18" (1/3) ... [2022-07-12 08:26:29,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b00a39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:26:29, skipping insertion in model container [2022-07-12 08:26:29,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:21" (2/3) ... [2022-07-12 08:26:29,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b00a39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:26:29, skipping insertion in model container [2022-07-12 08:26:29,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:26:29" (3/3) ... [2022-07-12 08:26:29,164 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.05.cil-1.c [2022-07-12 08:26:29,176 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:26:29,176 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:26:29,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:26:29,253 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@6a1012ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41b7037c [2022-07-12 08:26:29,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:26:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 08:26:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:29,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:29,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-07-12 08:26:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:29,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536629359] [2022-07-12 08:26:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:29,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:29,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536629359] [2022-07-12 08:26:29,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536629359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:29,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:29,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:26:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187678207] [2022-07-12 08:26:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:29,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:26:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:26:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:26:29,584 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:30,420 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2022-07-12 08:26:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:26:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:30,453 INFO L225 Difference]: With dead ends: 4837 [2022-07-12 08:26:30,453 INFO L226 Difference]: Without dead ends: 2388 [2022-07-12 08:26:30,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:30,466 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:30,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 16644 Invalid, 398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:26:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-07-12 08:26:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2022-07-12 08:26:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 08:26:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-07-12 08:26:30,614 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-07-12 08:26:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:30,615 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-07-12 08:26:30,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-07-12 08:26:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:30,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:30,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:30,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:26:30,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-07-12 08:26:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005532144] [2022-07-12 08:26:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005532144] [2022-07-12 08:26:30,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005532144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:30,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:30,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:26:30,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303097610] [2022-07-12 08:26:30,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:30,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:26:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:26:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:26:30,837 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:32,087 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2022-07-12 08:26:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:26:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:32,100 INFO L225 Difference]: With dead ends: 2835 [2022-07-12 08:26:32,101 INFO L226 Difference]: Without dead ends: 2646 [2022-07-12 08:26:32,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:26:32,103 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:32,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 16693 Invalid, 1081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:26:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-12 08:26:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2022-07-12 08:26:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-12 08:26:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2022-07-12 08:26:32,169 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2022-07-12 08:26:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:32,170 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2022-07-12 08:26:32,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2022-07-12 08:26:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:32,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:32,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:32,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:26:32,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-07-12 08:26:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682703962] [2022-07-12 08:26:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:32,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682703962] [2022-07-12 08:26:32,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682703962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:32,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:32,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644886653] [2022-07-12 08:26:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:32,284 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:33,875 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2022-07-12 08:26:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:33,889 INFO L225 Difference]: With dead ends: 3293 [2022-07-12 08:26:33,889 INFO L226 Difference]: Without dead ends: 2910 [2022-07-12 08:26:33,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:33,898 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21269 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:33,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 21269 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:26:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-07-12 08:26:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2022-07-12 08:26:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-12 08:26:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2022-07-12 08:26:33,985 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2022-07-12 08:26:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:33,986 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2022-07-12 08:26:33,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2022-07-12 08:26:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:33,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:33,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:26:33,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2022-07-12 08:26:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045392286] [2022-07-12 08:26:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045392286] [2022-07-12 08:26:34,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045392286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:34,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:34,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528984241] [2022-07-12 08:26:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:34,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:34,100 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:35,598 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2022-07-12 08:26:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:35,614 INFO L225 Difference]: With dead ends: 3966 [2022-07-12 08:26:35,615 INFO L226 Difference]: Without dead ends: 3402 [2022-07-12 08:26:35,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:35,627 INFO L413 NwaCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:35,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 21257 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:26:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-07-12 08:26:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2022-07-12 08:26:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-12 08:26:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2022-07-12 08:26:35,735 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2022-07-12 08:26:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:35,735 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2022-07-12 08:26:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2022-07-12 08:26:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:35,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:35,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:26:35,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:35,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2022-07-12 08:26:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207861846] [2022-07-12 08:26:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:35,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207861846] [2022-07-12 08:26:35,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207861846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:35,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:35,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728195563] [2022-07-12 08:26:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:35,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:35,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:35,860 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:37,331 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2022-07-12 08:26:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:37,351 INFO L225 Difference]: With dead ends: 5270 [2022-07-12 08:26:37,351 INFO L226 Difference]: Without dead ends: 4340 [2022-07-12 08:26:37,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:37,355 INFO L413 NwaCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21252 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 21252 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:26:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-07-12 08:26:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2022-07-12 08:26:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-12 08:26:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2022-07-12 08:26:37,498 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2022-07-12 08:26:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:37,499 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2022-07-12 08:26:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2022-07-12 08:26:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:37,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:37,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:26:37,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2022-07-12 08:26:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:37,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400099697] [2022-07-12 08:26:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:37,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400099697] [2022-07-12 08:26:37,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400099697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:37,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410149572] [2022-07-12 08:26:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:37,602 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:38,978 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2022-07-12 08:26:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:38,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:39,012 INFO L225 Difference]: With dead ends: 7877 [2022-07-12 08:26:39,012 INFO L226 Difference]: Without dead ends: 6214 [2022-07-12 08:26:39,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:39,021 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21247 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:39,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 21247 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:26:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-07-12 08:26:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2022-07-12 08:26:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-12 08:26:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2022-07-12 08:26:39,246 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2022-07-12 08:26:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:39,246 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2022-07-12 08:26:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2022-07-12 08:26:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:39,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:39,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:39,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:26:39,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:39,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2022-07-12 08:26:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972363787] [2022-07-12 08:26:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972363787] [2022-07-12 08:26:39,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972363787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:39,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:39,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267127753] [2022-07-12 08:26:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:39,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:39,355 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:41,129 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2022-07-12 08:26:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:41,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:41,176 INFO L225 Difference]: With dead ends: 14356 [2022-07-12 08:26:41,177 INFO L226 Difference]: Without dead ends: 11220 [2022-07-12 08:26:41,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:41,193 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20807 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:41,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4981 Valid, 20807 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:26:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2022-07-12 08:26:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2022-07-12 08:26:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-12 08:26:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2022-07-12 08:26:41,646 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2022-07-12 08:26:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:41,647 INFO L495 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2022-07-12 08:26:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2022-07-12 08:26:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:41,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:41,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:41,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:26:41,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:41,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2022-07-12 08:26:41,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:41,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980886007] [2022-07-12 08:26:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:41,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:41,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980886007] [2022-07-12 08:26:41,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980886007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:41,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:41,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339668785] [2022-07-12 08:26:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:41,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:41,747 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:43,839 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2022-07-12 08:26:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:43,909 INFO L225 Difference]: With dead ends: 25523 [2022-07-12 08:26:43,909 INFO L226 Difference]: Without dead ends: 19474 [2022-07-12 08:26:43,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:43,944 INFO L413 NwaCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:43,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 21299 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 08:26:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2022-07-12 08:26:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2022-07-12 08:26:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-12 08:26:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2022-07-12 08:26:44,810 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2022-07-12 08:26:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:44,811 INFO L495 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2022-07-12 08:26:44,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2022-07-12 08:26:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:44,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:44,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:26:44,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2022-07-12 08:26:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:44,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413193904] [2022-07-12 08:26:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:44,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:44,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413193904] [2022-07-12 08:26:44,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413193904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:44,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:44,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:44,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954986081] [2022-07-12 08:26:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:44,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:44,915 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:47,640 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2022-07-12 08:26:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:47,796 INFO L225 Difference]: With dead ends: 46786 [2022-07-12 08:26:47,796 INFO L226 Difference]: Without dead ends: 35088 [2022-07-12 08:26:47,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:47,860 INFO L413 NwaCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21222 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:47,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 21222 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:26:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2022-07-12 08:26:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2022-07-12 08:26:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-12 08:26:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2022-07-12 08:26:49,619 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2022-07-12 08:26:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:49,620 INFO L495 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2022-07-12 08:26:49,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2022-07-12 08:26:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:49,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:49,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:26:49,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2022-07-12 08:26:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:49,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751773719] [2022-07-12 08:26:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:49,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:49,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751773719] [2022-07-12 08:26:49,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751773719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:49,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:49,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123222208] [2022-07-12 08:26:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:49,741 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:54,038 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2022-07-12 08:26:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:26:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:54,317 INFO L225 Difference]: With dead ends: 88545 [2022-07-12 08:26:54,318 INFO L226 Difference]: Without dead ends: 65422 [2022-07-12 08:26:54,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:54,404 INFO L413 NwaCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21215 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:54,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21215 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:26:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2022-07-12 08:26:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2022-07-12 08:26:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-12 08:26:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2022-07-12 08:26:57,604 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2022-07-12 08:26:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:57,604 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2022-07-12 08:26:57,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2022-07-12 08:26:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:26:57,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:57,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:57,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:26:57,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2022-07-12 08:26:57,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269461864] [2022-07-12 08:26:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:26:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:26:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:26:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:26:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:57,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269461864] [2022-07-12 08:26:57,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269461864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:57,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:57,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321839686] [2022-07-12 08:26:57,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:57,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:57,721 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:27:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:27:01,495 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2022-07-12 08:27:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:27:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:27:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:27:01,765 INFO L225 Difference]: With dead ends: 105804 [2022-07-12 08:27:01,766 INFO L226 Difference]: Without dead ends: 59896 [2022-07-12 08:27:01,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:27:01,865 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20555 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:27:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 20555 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:27:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2022-07-12 08:27:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2022-07-12 08:27:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-12 08:27:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2022-07-12 08:27:04,604 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2022-07-12 08:27:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:27:04,604 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2022-07-12 08:27:04,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:27:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2022-07-12 08:27:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 08:27:04,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:27:04,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:27:04,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:27:04,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:27:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:27:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2022-07-12 08:27:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:27:04,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442225132] [2022-07-12 08:27:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:27:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:27:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:27:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:27:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:27:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:27:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:27:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:27:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:27:04,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442225132] [2022-07-12 08:27:04,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442225132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:27:04,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:27:04,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:27:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524208099] [2022-07-12 08:27:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:27:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:27:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:27:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:27:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:27:04,709 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:27:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:27:10,640 INFO L93 Difference]: Finished difference Result 133917 states and 218160 transitions. [2022-07-12 08:27:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:27:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 08:27:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:27:11,154 INFO L225 Difference]: With dead ends: 133917 [2022-07-12 08:27:11,154 INFO L226 Difference]: Without dead ends: 88010 [2022-07-12 08:27:11,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:27:11,245 INFO L413 NwaCegarLoop]: 4560 mSDtfsCounter, 4915 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17058 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:27:11,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 17058 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:27:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88010 states. [2022-07-12 08:27:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88010 to 70805. [2022-07-12 08:27:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70805 states, 63397 states have (on average 1.525561146426487) internal successors, (96716), 63912 states have internal predecessors, (96716), 4706 states have call successors, (4706), 2316 states have call predecessors, (4706), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-12 08:27:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70805 states to 70805 states and 115133 transitions. [2022-07-12 08:27:15,120 INFO L78 Accepts]: Start accepts. Automaton has 70805 states and 115133 transitions. Word has length 101 [2022-07-12 08:27:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:27:15,120 INFO L495 AbstractCegarLoop]: Abstraction has 70805 states and 115133 transitions. [2022-07-12 08:27:15,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:27:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 70805 states and 115133 transitions. [2022-07-12 08:27:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 08:27:15,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:27:15,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:27:15,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:27:15,496 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:27:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:27:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1967377923, now seen corresponding path program 1 times [2022-07-12 08:27:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:27:15,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155451147] [2022-07-12 08:27:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:27:15,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:27:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:27:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 08:27:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 08:27:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 08:27:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:27:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 08:27:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:27:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 08:27:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:27:15,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:27:15,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155451147] [2022-07-12 08:27:15,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155451147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:27:15,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932875409] [2022-07-12 08:27:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:27:15,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:27:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:27:15,661 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) [2022-07-12 08:27:15,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:27:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:15,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:27:15,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:27:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 08:27:15,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:27:15,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932875409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:27:15,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:27:15,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:27:15,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538098237] [2022-07-12 08:27:15,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:27:15,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:27:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:27:15,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:27:15,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:27:15,927 INFO L87 Difference]: Start difference. First operand 70805 states and 115133 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:27:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:27:22,106 INFO L93 Difference]: Finished difference Result 206790 states and 337441 transitions. [2022-07-12 08:27:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:27:22,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2022-07-12 08:27:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:27:22,778 INFO L225 Difference]: With dead ends: 206790 [2022-07-12 08:27:22,778 INFO L226 Difference]: Without dead ends: 138120 [2022-07-12 08:27:22,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:27:22,935 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4192 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:27:22,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4192 Valid, 4549 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:27:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138120 states.