./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.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.04.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 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:06:06,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:06:06,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:06:06,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:06:06,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:06:06,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:06:06,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:06:06,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:06:06,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:06:06,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:06:06,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:06:06,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:06:06,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:06:06,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:06:06,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:06:06,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:06:06,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:06:06,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:06:06,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:06:06,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:06:06,485 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:06:06,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:06:06,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:06:06,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:06:06,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:06:06,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:06:06,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:06:06,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:06:06,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:06:06,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:06:06,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:06:06,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:06:06,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:06:06,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:06:06,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:06:06,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:06:06,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:06:06,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:06:06,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:06:06,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:06:06,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:06:06,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:06:06,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:06:06,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:06:06,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:06:06,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:06:06,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:06:06,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:06:06,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:06:06,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:06:06,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:06:06,533 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:06:06,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:06:06,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:06:06,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:06:06,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:06:06,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:06:06,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:06:06,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:06:06,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:06:06,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:06:06,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:06:06,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:06:06,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:06:06,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:06:06,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:06:06,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:06:06,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:06:06,546 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:06:06,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:06:06,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:06:06,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 [2022-07-13 20:06:06,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:06:06,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:06:06,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:06:06,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:06:06,773 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:06:06,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2022-07-13 20:06:06,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40b120ef/ac7bceb8c27f481ca5771910ed33ed17/FLAG18628aa08 [2022-07-13 20:06:07,676 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:06:07,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2022-07-13 20:06:07,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40b120ef/ac7bceb8c27f481ca5771910ed33ed17/FLAG18628aa08 [2022-07-13 20:06:07,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40b120ef/ac7bceb8c27f481ca5771910ed33ed17 [2022-07-13 20:06:07,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:06:07,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:06:07,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:06:07,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:06:07,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:06:07,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:06:07" (1/1) ... [2022-07-13 20:06:07,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d2ad66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:07, skipping insertion in model container [2022-07-13 20:06:07,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:06:07" (1/1) ... [2022-07-13 20:06:07,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:06:08,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:06:09,520 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.04.cil-1.c[375709,375722] [2022-07-13 20:06:09,547 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.04.cil-1.c[383339,383352] [2022-07-13 20:06:09,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:09,682 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:06:10,397 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.04.cil-1.c[375709,375722] [2022-07-13 20:06:10,408 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.04.cil-1.c[383339,383352] [2022-07-13 20:06:10,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:10,469 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:06:10,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10 WrapperNode [2022-07-13 20:06:10,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:06:10,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:10,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:06:10,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:06:10,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:10,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:10,946 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-07-13 20:06:10,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:10,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:06:10,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:06:10,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:06:10,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:10,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:06:11,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:06:11,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:06:11,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:06:11,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (1/1) ... [2022-07-13 20:06:11,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:06:11,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:11,413 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 20:06:11,475 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 20:06:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:06:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:06:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:06:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:06:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:06:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:06:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:06:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:06:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:06:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:06:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:06:11,721 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:06:11,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:06:17,608 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:06:17,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:06:17,639 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-13 20:06:17,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:17 BoogieIcfgContainer [2022-07-13 20:06:17,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:06:17,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:06:17,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:06:17,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:06:17,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:06:07" (1/3) ... [2022-07-13 20:06:17,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a011c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:17, skipping insertion in model container [2022-07-13 20:06:17,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:10" (2/3) ... [2022-07-13 20:06:17,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a011c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:17, skipping insertion in model container [2022-07-13 20:06:17,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:17" (3/3) ... [2022-07-13 20:06:17,657 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2022-07-13 20:06:17,668 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:06:17,668 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:06:17,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:06:17,756 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@601ae7d0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8145d89 [2022-07-13 20:06:17,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:06:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-13 20:06:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:17,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:17,784 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] [2022-07-13 20:06:17,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-07-13 20:06:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:17,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878464296] [2022-07-13 20:06:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:18,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:18,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878464296] [2022-07-13 20:06:18,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878464296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:18,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:18,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:06:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476267174] [2022-07-13 20:06:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:18,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:06:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:06:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:06:18,188 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 20:06:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:18,894 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-07-13 20:06:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:06:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:18,918 INFO L225 Difference]: With dead ends: 4778 [2022-07-13 20:06:18,919 INFO L226 Difference]: Without dead ends: 2352 [2022-07-13 20:06:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:18,930 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:18,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 16572 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:06:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-07-13 20:06:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-07-13 20:06:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-13 20:06:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-07-13 20:06:19,063 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-07-13 20:06:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:19,064 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-07-13 20:06:19,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 20:06:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-07-13 20:06:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:19,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:19,074 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] [2022-07-13 20:06:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:06:19,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-07-13 20:06:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361059668] [2022-07-13 20:06:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,222 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 20:06:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:19,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361059668] [2022-07-13 20:06:19,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361059668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:19,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:19,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:06:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495677531] [2022-07-13 20:06:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:06:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:06:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:06:19,226 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 20:06:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:20,390 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-07-13 20:06:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:06:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:20,403 INFO L225 Difference]: With dead ends: 2738 [2022-07-13 20:06:20,403 INFO L226 Difference]: Without dead ends: 2573 [2022-07-13 20:06:20,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:06:20,406 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 16580 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-07-13 20:06:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-07-13 20:06:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-13 20:06:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-07-13 20:06:20,472 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-07-13 20:06:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:20,472 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-07-13 20:06:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 20:06:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-07-13 20:06:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:20,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:20,474 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] [2022-07-13 20:06:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:06:20,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-07-13 20:06:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170441259] [2022-07-13 20:06:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:20,574 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 20:06:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:20,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170441259] [2022-07-13 20:06:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170441259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:20,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:20,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265669528] [2022-07-13 20:06:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:20,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:20,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:20,577 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:21,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:21,928 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-07-13 20:06:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:06:21,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:21,940 INFO L225 Difference]: With dead ends: 3131 [2022-07-13 20:06:21,940 INFO L226 Difference]: Without dead ends: 2798 [2022-07-13 20:06:21,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:06:21,947 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21069 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 21069 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:06:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-13 20:06:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-07-13 20:06:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-13 20:06:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-07-13 20:06:22,017 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-07-13 20:06:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:22,018 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-07-13 20:06:22,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-07-13 20:06:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:22,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:22,021 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] [2022-07-13 20:06:22,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:06:22,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-07-13 20:06:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917119893] [2022-07-13 20:06:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:22,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:22,118 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 20:06:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917119893] [2022-07-13 20:06:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917119893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:22,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:22,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:22,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469953960] [2022-07-13 20:06:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:22,121 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:23,328 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-07-13 20:06:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:06:23,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:23,343 INFO L225 Difference]: With dead ends: 3709 [2022-07-13 20:06:23,343 INFO L226 Difference]: Without dead ends: 3219 [2022-07-13 20:06:23,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:06:23,347 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:23,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 20688 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-07-13 20:06:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-07-13 20:06:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-13 20:06:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-07-13 20:06:23,444 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-07-13 20:06:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:23,444 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-07-13 20:06:23,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-07-13 20:06:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:23,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:23,446 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] [2022-07-13 20:06:23,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:06:23,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-07-13 20:06:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:23,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558672849] [2022-07-13 20:06:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:23,589 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 20:06:23,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:23,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558672849] [2022-07-13 20:06:23,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558672849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:23,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:23,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136243864] [2022-07-13 20:06:23,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:23,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:23,592 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:24,785 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-07-13 20:06:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:06:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:24,801 INFO L225 Difference]: With dead ends: 4824 [2022-07-13 20:06:24,802 INFO L226 Difference]: Without dead ends: 4019 [2022-07-13 20:06:24,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:06:24,806 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21057 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:24,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 21057 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-07-13 20:06:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-07-13 20:06:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-13 20:06:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-07-13 20:06:24,912 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-07-13 20:06:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:24,913 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-07-13 20:06:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-07-13 20:06:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:24,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:24,915 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] [2022-07-13 20:06:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:06:24,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-07-13 20:06:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551370891] [2022-07-13 20:06:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,996 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 20:06:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551370891] [2022-07-13 20:06:24,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551370891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:24,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:24,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626781297] [2022-07-13 20:06:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:24,999 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:26,363 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-07-13 20:06:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:26,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:26,388 INFO L225 Difference]: With dead ends: 7566 [2022-07-13 20:06:26,388 INFO L226 Difference]: Without dead ends: 6130 [2022-07-13 20:06:26,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:26,396 INFO L413 NwaCegarLoop]: 4367 mSDtfsCounter, 4752 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21039 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-07-13 20:06:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-07-13 20:06:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-07-13 20:06:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-07-13 20:06:26,651 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-07-13 20:06:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:26,652 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-07-13 20:06:26,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-07-13 20:06:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:26,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:26,655 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] [2022-07-13 20:06:26,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:06:26,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-07-13 20:06:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:26,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745569145] [2022-07-13 20:06:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:26,729 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 20:06:26,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:26,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745569145] [2022-07-13 20:06:26,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745569145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:26,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:26,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348085390] [2022-07-13 20:06:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:26,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:26,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:26,732 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:28,212 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-07-13 20:06:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:28,255 INFO L225 Difference]: With dead ends: 12284 [2022-07-13 20:06:28,255 INFO L226 Difference]: Without dead ends: 9596 [2022-07-13 20:06:28,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:28,270 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 4609 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 21090 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:28,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 21090 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:06:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-07-13 20:06:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-07-13 20:06:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-07-13 20:06:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-07-13 20:06:28,698 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-07-13 20:06:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:28,698 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-07-13 20:06:28,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-07-13 20:06:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:28,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:28,704 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] [2022-07-13 20:06:28,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:06:28,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-07-13 20:06:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:28,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343129603] [2022-07-13 20:06:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,796 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 20:06:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:28,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343129603] [2022-07-13 20:06:28,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343129603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:28,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:28,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308093667] [2022-07-13 20:06:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:28,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:28,799 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:30,488 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-07-13 20:06:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:30,562 INFO L225 Difference]: With dead ends: 21183 [2022-07-13 20:06:30,562 INFO L226 Difference]: Without dead ends: 16082 [2022-07-13 20:06:30,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:30,590 INFO L413 NwaCegarLoop]: 4357 mSDtfsCounter, 4672 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 21029 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:30,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 21029 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-07-13 20:06:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-07-13 20:06:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-07-13 20:06:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-07-13 20:06:31,244 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-07-13 20:06:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:31,245 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-07-13 20:06:31,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-07-13 20:06:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:31,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:31,257 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] [2022-07-13 20:06:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:06:31,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-07-13 20:06:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46732087] [2022-07-13 20:06:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:31,346 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 20:06:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:31,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46732087] [2022-07-13 20:06:31,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46732087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:31,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:31,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170662645] [2022-07-13 20:06:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:31,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:31,349 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:33,387 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-07-13 20:06:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:33,520 INFO L225 Difference]: With dead ends: 38598 [2022-07-13 20:06:33,520 INFO L226 Difference]: Without dead ends: 28608 [2022-07-13 20:06:33,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:33,566 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 4632 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:33,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 21024 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:06:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-07-13 20:06:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-07-13 20:06:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-07-13 20:06:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-07-13 20:06:34,764 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-07-13 20:06:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:34,765 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-07-13 20:06:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-07-13 20:06:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:34,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:34,783 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] [2022-07-13 20:06:34,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:06:34,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-07-13 20:06:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:34,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013152316] [2022-07-13 20:06:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:34,878 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 20:06:34,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:34,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013152316] [2022-07-13 20:06:34,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013152316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:34,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:34,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353830586] [2022-07-13 20:06:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:34,880 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:38,534 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-07-13 20:06:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:38,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:38,773 INFO L225 Difference]: With dead ends: 72173 [2022-07-13 20:06:38,773 INFO L226 Difference]: Without dead ends: 52438 [2022-07-13 20:06:38,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:38,842 INFO L413 NwaCegarLoop]: 4353 mSDtfsCounter, 4577 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 21010 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:38,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4587 Valid, 21010 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:06:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-07-13 20:06:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-07-13 20:06:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-07-13 20:06:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-07-13 20:06:41,081 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-07-13 20:06:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:41,081 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-07-13 20:06:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 20:06:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-07-13 20:06:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 20:06:41,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:41,116 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] [2022-07-13 20:06:41,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:06:41,117 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-07-13 20:06:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:41,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719556865] [2022-07-13 20:06:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:41,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,200 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 20:06:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:41,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719556865] [2022-07-13 20:06:41,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719556865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:41,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:41,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:06:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438684389] [2022-07-13 20:06:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:06:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:06:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:06:41,202 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 20:06:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:45,693 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-07-13 20:06:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:06:45,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-13 20:06:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:46,002 INFO L225 Difference]: With dead ends: 113490 [2022-07-13 20:06:46,003 INFO L226 Difference]: Without dead ends: 74355 [2022-07-13 20:06:46,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 20:06:46,115 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16887 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:46,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16887 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 20:06:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-07-13 20:06:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-07-13 20:06:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-07-13 20:06:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-07-13 20:06:49,876 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-07-13 20:06:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-07-13 20:06:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 20:06:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-07-13 20:06:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:06:50,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:50,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:50,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:06:50,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-07-13 20:06:50,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48894574] [2022-07-13 20:06:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:50,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:06:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:06:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:06:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:06:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 20:06:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:06:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:06:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48894574] [2022-07-13 20:06:50,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48894574] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:50,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290441275] [2022-07-13 20:06:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:50,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:50,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:50,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:06:50,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:06:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:50,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 20:06:50,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:50,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290441275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:50,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:50,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:06:50,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502666020] [2022-07-13 20:06:50,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:50,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:50,421 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:06:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:55,724 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2022-07-13 20:06:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2022-07-13 20:06:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:56,151 INFO L225 Difference]: With dead ends: 176333 [2022-07-13 20:06:56,151 INFO L226 Difference]: Without dead ends: 117807 [2022-07-13 20:06:56,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:56,272 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4173 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:56,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2022-07-13 20:07:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2022-07-13 20:07:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117033 states, 103621 states have (on average 1.5118653554781367) internal successors, (156661), 104649 states have internal predecessors, (156661), 8034 states have call successors, (8034), 4608 states have call predecessors, (8034), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-07-13 20:07:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2022-07-13 20:07:02,401 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2022-07-13 20:07:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:07:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2022-07-13 20:07:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2022-07-13 20:07:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:07:02,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:07:02,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:02,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:07:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 20:07:02,870 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:07:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:07:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2022-07-13 20:07:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:07:02,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152907602] [2022-07-13 20:07:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:07:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:07:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 20:07:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 20:07:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:07:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 20:07:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 20:07:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:07:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 20:07:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:07:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:07:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152907602] [2022-07-13 20:07:02,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152907602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:07:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26615226] [2022-07-13 20:07:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:07:02,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:07:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:07:02,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:07:02,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:07:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:07:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:07:03,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:07:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 20:07:03,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:07:03,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26615226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:07:03,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:07:03,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:07:03,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487274770] [2022-07-13 20:07:03,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:07:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:07:03,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:07:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:07:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:03,177 INFO L87 Difference]: Start difference. First operand 117033 states and 190484 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:07:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:07:12,562 INFO L93 Difference]: Finished difference Result 344050 states and 562286 transitions. [2022-07-13 20:07:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:07:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2022-07-13 20:07:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:07:13,744 INFO L225 Difference]: With dead ends: 344050 [2022-07-13 20:07:13,745 INFO L226 Difference]: Without dead ends: 229151 [2022-07-13 20:07:13,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:07:13,977 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4167 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:07:13,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:07:14,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229151 states.