./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.09.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 d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:06:43,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:06:43,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:06:43,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:06:43,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:06:43,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:06:43,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:06:43,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:06:43,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:06:43,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:06:43,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:06:43,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:06:43,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:06:43,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:06:43,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:06:43,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:06:43,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:06:43,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:06:43,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:06:43,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:06:43,370 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:06:43,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:06:43,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:06:43,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:06:43,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:06:43,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:06:43,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:06:43,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:06:43,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:06:43,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:06:43,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:06:43,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:06:43,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:06:43,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:06:43,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:06:43,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:06:43,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:06:43,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:06:43,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:06:43,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:06:43,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:06:43,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:06:43,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:06:43,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:06:43,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:06:43,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:06:43,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:06:43,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:06:43,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:06:43,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:06:43,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:06:43,423 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:06:43,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:06:43,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:06:43,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:06:43,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:06:43,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:06:43,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:06:43,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:06:43,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:06:43,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:06:43,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:06:43,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:06:43,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:06:43,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:06:43,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:06:43,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:06:43,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:06:43,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:06:43,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:06:43,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:06:43,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:06:43,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:06:43,428 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:06:43,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:06:43,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:06:43,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c [2022-07-13 20:06:43,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:06:43,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:06:43,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:06:43,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:06:43,691 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:06:43,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-07-13 20:06:43,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0377b0f1/88cc272e91824a04be64e3eb355df8c0/FLAG1dfa80e15 [2022-07-13 20:06:44,565 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:06:44,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-07-13 20:06:44,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0377b0f1/88cc272e91824a04be64e3eb355df8c0/FLAG1dfa80e15 [2022-07-13 20:06:44,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0377b0f1/88cc272e91824a04be64e3eb355df8c0 [2022-07-13 20:06:44,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:06:44,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:06:44,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:06:44,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:06:44,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:06:44,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:06:44" (1/1) ... [2022-07-13 20:06:44,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270243bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:44, skipping insertion in model container [2022-07-13 20:06:44,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:06:44" (1/1) ... [2022-07-13 20:06:44,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:06:44,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:06:46,621 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.09.cil-1.c[375709,375722] [2022-07-13 20:06:46,649 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.09.cil-1.c[383339,383352] [2022-07-13 20:06:46,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:46,884 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:06:47,647 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.09.cil-1.c[375709,375722] [2022-07-13 20:06:47,655 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.09.cil-1.c[383339,383352] [2022-07-13 20:06:47,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:47,758 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:06:47,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47 WrapperNode [2022-07-13 20:06:47,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:06:47,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:47,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:06:47,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:06:47,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:47,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,266 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-07-13 20:06:48,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:48,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:06:48,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:06:48,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:06:48,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:06:48,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:06:48,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:06:48,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:06:48,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (1/1) ... [2022-07-13 20:06:48,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:06:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:48,880 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) [2022-07-13 20:06:48,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:06:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:06:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:06:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:06:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:06:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:06:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:06:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:06:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:06:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:06:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:06:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:06:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:06:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:06:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:06:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:06:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:06:49,189 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:06:49,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:06:55,398 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:06:55,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:06:55,426 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-13 20:06:55,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:55 BoogieIcfgContainer [2022-07-13 20:06:55,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:06:55,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:06:55,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:06:55,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:06:55,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:06:44" (1/3) ... [2022-07-13 20:06:55,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612e9902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:55, skipping insertion in model container [2022-07-13 20:06:55,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:47" (2/3) ... [2022-07-13 20:06:55,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612e9902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:55, skipping insertion in model container [2022-07-13 20:06:55,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:55" (3/3) ... [2022-07-13 20:06:55,441 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.09.cil-1.c [2022-07-13 20:06:55,452 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:06:55,452 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:06:55,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:06:55,547 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@6dfd29c2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@299376d3 [2022-07-13 20:06:55,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:06:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 20:06:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:06:55,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:55,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:55,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-07-13 20:06:55,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918058137] [2022-07-13 20:06:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:06:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:55,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:06:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:06:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:56,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:56,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918058137] [2022-07-13 20:06:56,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918058137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:56,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:56,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:06:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495532341] [2022-07-13 20:06:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:06:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:06:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:06:56,138 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-13 20:06:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:57,472 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-07-13 20:06:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:06:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2022-07-13 20:06:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:57,501 INFO L225 Difference]: With dead ends: 5081 [2022-07-13 20:06:57,501 INFO L226 Difference]: Without dead ends: 2532 [2022-07-13 20:06:57,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:57,518 INFO L413 NwaCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16932 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:57,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 16932 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-07-13 20:06:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-07-13 20:06:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 20:06:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-07-13 20:06:57,653 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-07-13 20:06:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:57,653 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-07-13 20:06:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-13 20:06:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-07-13 20:06:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:06:57,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:57,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:06:57,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-07-13 20:06:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558937398] [2022-07-13 20:06:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:06:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:06:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:06:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:57,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558937398] [2022-07-13 20:06:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558937398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:57,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:57,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:06:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473658676] [2022-07-13 20:06:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:06:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:06:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:06:57,830 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-13 20:07:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:00,082 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-07-13 20:07:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:07:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:00,098 INFO L225 Difference]: With dead ends: 3223 [2022-07-13 20:07:00,098 INFO L226 Difference]: Without dead ends: 2938 [2022-07-13 20:07:00,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:07:00,102 INFO L413 NwaCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17145 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:00,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 17145 Invalid, 1681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 20:07:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-13 20:07:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-07-13 20:07:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-13 20:07:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-07-13 20:07:00,188 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-07-13 20:07:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:00,189 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-07-13 20:07:00,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-13 20:07:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-07-13 20:07:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:00,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:00,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:07:00,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-07-13 20:07:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:00,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731072278] [2022-07-13 20:07:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:00,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731072278] [2022-07-13 20:07:00,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731072278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:00,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:00,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112755083] [2022-07-13 20:07:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:00,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:00,340 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:02,895 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-07-13 20:07:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:02,912 INFO L225 Difference]: With dead ends: 3941 [2022-07-13 20:07:02,912 INFO L226 Difference]: Without dead ends: 3358 [2022-07-13 20:07:02,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:02,921 INFO L413 NwaCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22069 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:02,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 22069 Invalid, 2520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:07:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-07-13 20:07:03,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-07-13 20:07:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-13 20:07:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-07-13 20:07:03,027 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-07-13 20:07:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:03,027 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-07-13 20:07:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-07-13 20:07:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:03,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:03,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:03,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:07:03,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-07-13 20:07:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:03,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157129331] [2022-07-13 20:07:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:03,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:03,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157129331] [2022-07-13 20:07:03,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157129331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:03,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:03,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:03,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634672496] [2022-07-13 20:07:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:03,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:03,198 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:05,652 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-07-13 20:07:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:05,677 INFO L225 Difference]: With dead ends: 4998 [2022-07-13 20:07:05,678 INFO L226 Difference]: Without dead ends: 4138 [2022-07-13 20:07:05,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:05,682 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22057 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:05,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 22057 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 20:07:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-07-13 20:07:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-07-13 20:07:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-13 20:07:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-07-13 20:07:05,820 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-07-13 20:07:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:05,820 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-07-13 20:07:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-07-13 20:07:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:05,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:05,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:07:05,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-07-13 20:07:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:05,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747714972] [2022-07-13 20:07:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:05,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:05,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747714972] [2022-07-13 20:07:05,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747714972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:05,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:05,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851421886] [2022-07-13 20:07:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:05,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:05,971 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:08,410 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-07-13 20:07:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:08,433 INFO L225 Difference]: With dead ends: 7038 [2022-07-13 20:07:08,433 INFO L226 Difference]: Without dead ends: 5620 [2022-07-13 20:07:08,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:08,440 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:08,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5196 Valid, 22052 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:07:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-07-13 20:07:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-07-13 20:07:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 20:07:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-07-13 20:07:08,679 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-07-13 20:07:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:08,679 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-07-13 20:07:08,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-07-13 20:07:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:08,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:08,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:08,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:07:08,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-07-13 20:07:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:08,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676876554] [2022-07-13 20:07:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676876554] [2022-07-13 20:07:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676876554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:08,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:08,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883155486] [2022-07-13 20:07:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:08,832 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:11,346 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-07-13 20:07:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:11,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:11,382 INFO L225 Difference]: With dead ends: 11117 [2022-07-13 20:07:11,382 INFO L226 Difference]: Without dead ends: 8582 [2022-07-13 20:07:11,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:11,397 INFO L413 NwaCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:11,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 22047 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:07:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-07-13 20:07:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-07-13 20:07:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 20:07:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-07-13 20:07:11,838 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-07-13 20:07:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:11,839 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-07-13 20:07:11,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-07-13 20:07:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:11,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:11,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:07:11,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-07-13 20:07:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:11,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125265325] [2022-07-13 20:07:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:11,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125265325] [2022-07-13 20:07:11,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125265325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:11,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:11,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147246756] [2022-07-13 20:07:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:11,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:11,971 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:14,482 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-07-13 20:07:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:14,531 INFO L225 Difference]: With dead ends: 19276 [2022-07-13 20:07:14,531 INFO L226 Difference]: Without dead ends: 14500 [2022-07-13 20:07:14,551 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 [2022-07-13 20:07:14,556 INFO L413 NwaCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:14,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5272 Valid, 21355 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:07:14,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-07-13 20:07:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-07-13 20:07:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 20:07:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-07-13 20:07:15,121 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-07-13 20:07:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:15,122 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-07-13 20:07:15,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-07-13 20:07:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:15,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:15,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:07:15,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-07-13 20:07:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:15,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330346882] [2022-07-13 20:07:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:15,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330346882] [2022-07-13 20:07:15,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330346882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:15,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:15,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:15,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536441788] [2022-07-13 20:07:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:15,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:15,242 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:16,986 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-07-13 20:07:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:07:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:17,033 INFO L225 Difference]: With dead ends: 23942 [2022-07-13 20:07:17,033 INFO L226 Difference]: Without dead ends: 14669 [2022-07-13 20:07:17,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:07:17,062 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21017 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:17,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 21017 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:07:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-13 20:07:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-07-13 20:07:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 20:07:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-07-13 20:07:17,729 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-07-13 20:07:17,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:17,730 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-07-13 20:07:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-07-13 20:07:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:17,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:17,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:07:17,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-07-13 20:07:17,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:17,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579483834] [2022-07-13 20:07:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:17,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579483834] [2022-07-13 20:07:17,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579483834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:17,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:17,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962448619] [2022-07-13 20:07:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:17,882 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:21,529 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-07-13 20:07:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:21,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:21,626 INFO L225 Difference]: With dead ends: 35561 [2022-07-13 20:07:21,627 INFO L226 Difference]: Without dead ends: 26288 [2022-07-13 20:07:21,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:21,664 INFO L413 NwaCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:21,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 22031 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 20:07:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-07-13 20:07:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-07-13 20:07:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-13 20:07:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-07-13 20:07:22,838 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-07-13 20:07:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:22,838 INFO L495 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-07-13 20:07:22,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-07-13 20:07:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:22,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:22,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:22,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:07:22,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:22,852 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-07-13 20:07:22,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:22,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968035601] [2022-07-13 20:07:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:22,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968035601] [2022-07-13 20:07:22,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968035601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:22,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:22,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:22,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831423876] [2022-07-13 20:07:22,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:22,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:22,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:22,970 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:28,116 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-07-13 20:07:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:07:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:28,370 INFO L225 Difference]: With dead ends: 68201 [2022-07-13 20:07:28,370 INFO L226 Difference]: Without dead ends: 49870 [2022-07-13 20:07:28,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:07:28,420 INFO L413 NwaCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22024 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:28,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5188 Valid, 22024 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:07:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-07-13 20:07:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-07-13 20:07:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-13 20:07:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-07-13 20:07:30,738 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-07-13 20:07:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:30,739 INFO L495 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-07-13 20:07:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-07-13 20:07:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:30,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:30,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:07:30,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-07-13 20:07:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:30,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151820495] [2022-07-13 20:07:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151820495] [2022-07-13 20:07:30,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151820495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418208357] [2022-07-13 20:07:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:30,891 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:41,843 INFO L93 Difference]: Finished difference Result 149094 states and 240779 transitions. [2022-07-13 20:07:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:07:41,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:07:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:42,343 INFO L225 Difference]: With dead ends: 149094 [2022-07-13 20:07:42,343 INFO L226 Difference]: Without dead ends: 112586 [2022-07-13 20:07:42,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:07:42,470 INFO L413 NwaCegarLoop]: 4832 mSDtfsCounter, 5249 mSDsluCounter, 17309 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22141 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:42,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 22141 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:07:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112586 states. [2022-07-13 20:07:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112586 to 74232. [2022-07-13 20:07:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74232 states, 67929 states have (on average 1.5573760838522575) internal successors, (105791), 68187 states have internal predecessors, (105791), 4503 states have call successors, (4503), 1542 states have call predecessors, (4503), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-13 20:07:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74232 states to 74232 states and 121614 transitions. [2022-07-13 20:07:47,893 INFO L78 Accepts]: Start accepts. Automaton has 74232 states and 121614 transitions. Word has length 145 [2022-07-13 20:07:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:47,894 INFO L495 AbstractCegarLoop]: Abstraction has 74232 states and 121614 transitions. [2022-07-13 20:07:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:07:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 74232 states and 121614 transitions. [2022-07-13 20:07:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 20:07:47,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:47,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:07:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:07:48,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2022-07-13 20:07:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:48,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002653097] [2022-07-13 20:07:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:07:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:07:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:07:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:07:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:07:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:48,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002653097] [2022-07-13 20:07:48,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002653097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:48,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:07:48,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:07:48,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630233809] [2022-07-13 20:07:48,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:48,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:07:48,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:48,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:07:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:07:48,299 INFO L87 Difference]: Start difference. First operand 74232 states and 121614 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-13 20:08:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:08,476 INFO L93 Difference]: Finished difference Result 288998 states and 474915 transitions. [2022-07-13 20:08:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:08,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-13 20:08:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:09,556 INFO L225 Difference]: With dead ends: 288998 [2022-07-13 20:08:09,556 INFO L226 Difference]: Without dead ends: 216904 [2022-07-13 20:08:09,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:08:09,947 INFO L413 NwaCegarLoop]: 4688 mSDtfsCounter, 5457 mSDsluCounter, 17312 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 22000 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5483 Valid, 22000 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:08:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216904 states.