./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+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 9e8eec1743df688e821561fda517f1945d9b8e3e5029879578d4191f60280f1b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:12:33,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:12:33,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:12:33,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:12:33,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:12:33,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:12:33,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:12:33,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:12:33,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:12:33,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:12:33,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:12:33,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:12:33,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:12:33,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:12:33,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:12:33,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:12:33,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:12:33,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:12:33,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:12:33,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:12:33,435 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:12:33,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:12:33,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:12:33,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:12:33,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:12:33,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:12:33,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:12:33,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:12:33,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:12:33,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:12:33,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:12:33,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:12:33,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:12:33,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:12:33,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:12:33,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:12:33,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:12:33,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:12:33,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:12:33,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:12:33,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:12:33,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:12:33,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:12:33,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:12:33,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:12:33,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:12:33,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:12:33,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:12:33,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:12:33,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:12:33,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:12:33,489 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:12:33,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:12:33,490 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:12:33,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:12:33,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:12:33,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:12:33,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:12:33,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:12:33,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:12:33,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:12:33,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:12:33,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:12:33,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:12:33,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:12:33,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:12:33,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:12:33,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:12:33,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:12:33,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:12:33,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:12:33,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:12:33,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:12:33,494 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:12:33,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:12:33,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:12:33,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eec1743df688e821561fda517f1945d9b8e3e5029879578d4191f60280f1b [2022-07-12 08:12:33,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:12:33,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:12:33,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:12:33,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:12:33,732 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:12:33,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c [2022-07-12 08:12:33,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e7994ca/ec118192fec34d578ad2ace4feba2cb7/FLAG8156d2900 [2022-07-12 08:12:34,652 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:12:34,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-1.c [2022-07-12 08:12:34,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e7994ca/ec118192fec34d578ad2ace4feba2cb7/FLAG8156d2900 [2022-07-12 08:12:34,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e7994ca/ec118192fec34d578ad2ace4feba2cb7 [2022-07-12 08:12:34,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:12:34,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:12:34,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:12:34,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:12:34,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:12:34,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:34,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b9a617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:34, skipping insertion in model container [2022-07-12 08:12:34,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:12:34" (1/1) ... [2022-07-12 08:12:34,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:12:34,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:12:36,548 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_label42+token_ring.04.cil-1.c[378560,378573] [2022-07-12 08:12:36,571 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_label42+token_ring.04.cil-1.c[383339,383352] [2022-07-12 08:12:36,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:12:36,720 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:12:37,532 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_label42+token_ring.04.cil-1.c[378560,378573] [2022-07-12 08:12:37,538 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_label42+token_ring.04.cil-1.c[383339,383352] [2022-07-12 08:12:37,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:12:37,612 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:12:37,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37 WrapperNode [2022-07-12 08:12:37,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:12:37,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:12:37,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:12:37,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:12:37,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:37,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,044 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-07-12 08:12:38,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:12:38,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:12:38,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:12:38,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:12:38,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:12:38,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:12:38,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:12:38,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:12:38,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (1/1) ... [2022-07-12 08:12:38,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:12:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:12:38,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:12:38,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:12:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:12:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:12:38,654 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:12:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:12:38,655 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:12:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:12:38,655 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:12:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:12:38,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:12:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:12:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:12:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:12:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:12:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:12:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:12:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:12:38,817 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:12:38,819 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:12:44,847 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:12:44,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:12:44,870 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 08:12:44,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:12:44 BoogieIcfgContainer [2022-07-12 08:12:44,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:12:44,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:12:44,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:12:44,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:12:44,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:12:34" (1/3) ... [2022-07-12 08:12:44,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ff9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:12:44, skipping insertion in model container [2022-07-12 08:12:44,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:12:37" (2/3) ... [2022-07-12 08:12:44,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ff9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:12:44, skipping insertion in model container [2022-07-12 08:12:44,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:12:44" (3/3) ... [2022-07-12 08:12:44,881 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.04.cil-1.c [2022-07-12 08:12:44,892 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:12:44,893 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:12:44,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:12:44,970 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@18109033, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@405a161a [2022-07-12 08:12:44,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:12:44,983 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) [2022-07-12 08:12:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:44,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:44,996 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] [2022-07-12 08:12:44,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-07-12 08:12:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:45,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946165103] [2022-07-12 08:12:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:45,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946165103] [2022-07-12 08:12:45,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946165103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:45,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:45,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:12:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531175491] [2022-07-12 08:12:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:12:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:12:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:12:45,354 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) [2022-07-12 08:12:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:46,089 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-07-12 08:12:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:12:46,092 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 [2022-07-12 08:12:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:46,112 INFO L225 Difference]: With dead ends: 4778 [2022-07-12 08:12:46,113 INFO L226 Difference]: Without dead ends: 2352 [2022-07-12 08:12:46,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:12:46,123 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:46,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 16572 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:12:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-07-12 08:12:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-07-12 08:12:46,231 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) [2022-07-12 08:12:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-07-12 08:12:46,245 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-07-12 08:12:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:46,245 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-07-12 08:12:46,247 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) [2022-07-12 08:12:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-07-12 08:12:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:46,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:46,255 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] [2022-07-12 08:12:46,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:12:46,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-07-12 08:12:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:46,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954709589] [2022-07-12 08:12:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:46,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:46,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954709589] [2022-07-12 08:12:46,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954709589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:46,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:46,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:12:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354875050] [2022-07-12 08:12:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:46,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:12:46,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:12:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:12:46,427 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) [2022-07-12 08:12:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:47,605 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-07-12 08:12:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:12:47,606 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 [2022-07-12 08:12:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:47,623 INFO L225 Difference]: With dead ends: 2738 [2022-07-12 08:12:47,623 INFO L226 Difference]: Without dead ends: 2573 [2022-07-12 08:12:47,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:12:47,629 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, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:47,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 16580 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:12:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-07-12 08:12:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-07-12 08:12:47,693 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) [2022-07-12 08:12:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-07-12 08:12:47,703 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-07-12 08:12:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-07-12 08:12:47,704 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) [2022-07-12 08:12:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-07-12 08:12:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:47,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:47,706 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] [2022-07-12 08:12:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:12:47,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-07-12 08:12:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707645513] [2022-07-12 08:12:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:47,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707645513] [2022-07-12 08:12:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707645513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:47,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:47,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365274008] [2022-07-12 08:12:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:47,898 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) [2022-07-12 08:12:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:49,174 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-07-12 08:12:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:49,175 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 [2022-07-12 08:12:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:49,187 INFO L225 Difference]: With dead ends: 3131 [2022-07-12 08:12:49,188 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 08:12:49,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:12:49,196 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-12 08:12:49,197 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] [2022-07-12 08:12:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 08:12:49,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-07-12 08:12:49,255 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) [2022-07-12 08:12:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-07-12 08:12:49,265 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-07-12 08:12:49,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:49,265 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-07-12 08:12:49,265 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) [2022-07-12 08:12:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-07-12 08:12:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:49,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:49,268 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] [2022-07-12 08:12:49,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:12:49,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-07-12 08:12:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:49,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138138966] [2022-07-12 08:12:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138138966] [2022-07-12 08:12:49,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138138966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:49,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:49,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833544962] [2022-07-12 08:12:49,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:49,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:49,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:49,392 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) [2022-07-12 08:12:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:50,611 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-07-12 08:12:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:50,612 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 [2022-07-12 08:12:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:50,625 INFO L225 Difference]: With dead ends: 3709 [2022-07-12 08:12:50,625 INFO L226 Difference]: Without dead ends: 3219 [2022-07-12 08:12:50,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:12:50,629 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-12 08:12:50,629 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] [2022-07-12 08:12:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-07-12 08:12:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-07-12 08:12:50,703 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) [2022-07-12 08:12:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-07-12 08:12:50,713 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-07-12 08:12:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:50,713 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-07-12 08:12:50,714 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) [2022-07-12 08:12:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-07-12 08:12:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:50,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:50,715 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] [2022-07-12 08:12:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:12:50,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-07-12 08:12:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:50,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831256985] [2022-07-12 08:12:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:50,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831256985] [2022-07-12 08:12:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831256985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:50,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:50,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380465862] [2022-07-12 08:12:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:50,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:50,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:50,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:50,807 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) [2022-07-12 08:12:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:52,176 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-07-12 08:12:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:12:52,176 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 [2022-07-12 08:12:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:52,193 INFO L225 Difference]: With dead ends: 4824 [2022-07-12 08:12:52,193 INFO L226 Difference]: Without dead ends: 4019 [2022-07-12 08:12:52,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:12:52,198 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:12:52,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 21057 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:12:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-07-12 08:12:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-07-12 08:12:52,315 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) [2022-07-12 08:12:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-07-12 08:12:52,326 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-07-12 08:12:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:52,327 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-07-12 08:12:52,327 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) [2022-07-12 08:12:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-07-12 08:12:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:52,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:52,329 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] [2022-07-12 08:12:52,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:12:52,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-07-12 08:12:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:52,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962940114] [2022-07-12 08:12:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:52,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962940114] [2022-07-12 08:12:52,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962940114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:52,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:52,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270261733] [2022-07-12 08:12:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:52,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:52,417 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) [2022-07-12 08:12:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:53,745 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-07-12 08:12:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:53,745 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 [2022-07-12 08:12:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:53,777 INFO L225 Difference]: With dead ends: 7566 [2022-07-12 08:12:53,778 INFO L226 Difference]: Without dead ends: 6130 [2022-07-12 08:12:53,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:12:53,793 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 [2022-07-12 08:12:53,794 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] [2022-07-12 08:12:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-07-12 08:12:53,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-07-12 08:12:54,007 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) [2022-07-12 08:12:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-07-12 08:12:54,023 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-07-12 08:12:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:54,023 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-07-12 08:12:54,024 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) [2022-07-12 08:12:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-07-12 08:12:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:54,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:54,027 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] [2022-07-12 08:12:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:12:54,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-07-12 08:12:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:54,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641368863] [2022-07-12 08:12:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:54,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641368863] [2022-07-12 08:12:54,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641368863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:54,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:54,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287341310] [2022-07-12 08:12:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:54,118 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) [2022-07-12 08:12:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:55,628 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-07-12 08:12:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:55,628 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 [2022-07-12 08:12:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:55,688 INFO L225 Difference]: With dead ends: 12284 [2022-07-12 08:12:55,689 INFO L226 Difference]: Without dead ends: 9596 [2022-07-12 08:12:55,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:12:55,703 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 [2022-07-12 08:12:55,703 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] [2022-07-12 08:12:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-07-12 08:12:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-07-12 08:12:56,018 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) [2022-07-12 08:12:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-07-12 08:12:56,039 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-07-12 08:12:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:56,040 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-07-12 08:12:56,040 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) [2022-07-12 08:12:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-07-12 08:12:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:56,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:56,045 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] [2022-07-12 08:12:56,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:12:56,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-07-12 08:12:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960035245] [2022-07-12 08:12:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:56,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960035245] [2022-07-12 08:12:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960035245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:56,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:56,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:56,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230575409] [2022-07-12 08:12:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:56,129 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) [2022-07-12 08:12:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:12:57,922 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-07-12 08:12:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:12:57,927 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 [2022-07-12 08:12:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:12:57,994 INFO L225 Difference]: With dead ends: 21183 [2022-07-12 08:12:57,994 INFO L226 Difference]: Without dead ends: 16082 [2022-07-12 08:12:58,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:12:58,020 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 [2022-07-12 08:12:58,021 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] [2022-07-12 08:12:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-07-12 08:12:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-07-12 08:12:58,675 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) [2022-07-12 08:12:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-07-12 08:12:58,710 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-07-12 08:12:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:12:58,711 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-07-12 08:12:58,711 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) [2022-07-12 08:12:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-07-12 08:12:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:12:58,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:12:58,719 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] [2022-07-12 08:12:58,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:12:58,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:12:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:12:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-07-12 08:12:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:12:58,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263498905] [2022-07-12 08:12:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:12:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:12:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:12:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:12:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:12:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:12:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:12:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:12:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:12:58,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:12:58,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263498905] [2022-07-12 08:12:58,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263498905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:12:58,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:12:58,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:12:58,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217166932] [2022-07-12 08:12:58,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:12:58,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:12:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:12:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:12:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:12:58,801 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) [2022-07-12 08:13:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:01,064 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-07-12 08:13:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:13:01,066 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 [2022-07-12 08:13:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:01,193 INFO L225 Difference]: With dead ends: 38598 [2022-07-12 08:13:01,194 INFO L226 Difference]: Without dead ends: 28608 [2022-07-12 08:13:01,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:13:01,244 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:01,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 21024 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:13:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-07-12 08:13:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-07-12 08:13:02,337 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) [2022-07-12 08:13:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-07-12 08:13:02,410 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-07-12 08:13:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:02,411 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-07-12 08:13:02,411 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) [2022-07-12 08:13:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-07-12 08:13:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:13:02,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:02,427 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] [2022-07-12 08:13:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:13:02,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-07-12 08:13:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:02,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400557965] [2022-07-12 08:13:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:13:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:13:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:13:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:13:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:02,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400557965] [2022-07-12 08:13:02,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400557965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:02,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:02,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153526550] [2022-07-12 08:13:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:02,510 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) [2022-07-12 08:13:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:05,932 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-07-12 08:13:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:13:05,933 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 [2022-07-12 08:13:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:06,185 INFO L225 Difference]: With dead ends: 72173 [2022-07-12 08:13:06,185 INFO L226 Difference]: Without dead ends: 52438 [2022-07-12 08:13:06,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:13:06,266 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 [2022-07-12 08:13:06,267 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] [2022-07-12 08:13:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-07-12 08:13:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-07-12 08:13:08,273 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) [2022-07-12 08:13:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-07-12 08:13:08,419 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-07-12 08:13:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:08,422 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-07-12 08:13:08,422 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) [2022-07-12 08:13:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-07-12 08:13:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 08:13:08,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:08,454 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] [2022-07-12 08:13:08,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:13:08,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-07-12 08:13:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:08,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228689467] [2022-07-12 08:13:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:13:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:13:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:13:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:13:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:08,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:08,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228689467] [2022-07-12 08:13:08,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228689467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:08,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:08,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:13:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322459131] [2022-07-12 08:13:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:13:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:13:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:13:08,535 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) [2022-07-12 08:13:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:13,152 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-07-12 08:13:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:13:13,152 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 [2022-07-12 08:13:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:13,427 INFO L225 Difference]: With dead ends: 113490 [2022-07-12 08:13:13,428 INFO L226 Difference]: Without dead ends: 74355 [2022-07-12 08:13:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:13:13,537 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:13,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16887 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:13:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-07-12 08:13:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-07-12 08:13:16,623 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) [2022-07-12 08:13:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-07-12 08:13:16,842 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-07-12 08:13:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:16,842 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-07-12 08:13:16,843 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) [2022-07-12 08:13:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-07-12 08:13:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:13:17,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:17,054 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] [2022-07-12 08:13:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:13:17,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-07-12 08:13:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247745785] [2022-07-12 08:13:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:13:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:13:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:13:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:13:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:13:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:13:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:13:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:17,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247745785] [2022-07-12 08:13:17,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247745785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:13:17,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688669439] [2022-07-12 08:13:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:17,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:17,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:17,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:13:17,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:13:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:17,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:13:17,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:13:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 08:13:17,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:13:17,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688669439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:17,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:13:17,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:13:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775945998] [2022-07-12 08:13:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:13:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:13:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:17,638 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) [2022-07-12 08:13:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:22,206 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2022-07-12 08:13:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:13:22,207 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 [2022-07-12 08:13:22,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:22,820 INFO L225 Difference]: With dead ends: 176333 [2022-07-12 08:13:22,820 INFO L226 Difference]: Without dead ends: 117807 [2022-07-12 08:13:22,932 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 [2022-07-12 08:13:22,933 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 [2022-07-12 08:13:22,933 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] [2022-07-12 08:13:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2022-07-12 08:13:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2022-07-12 08:13:28,726 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) [2022-07-12 08:13:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2022-07-12 08:13:29,130 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2022-07-12 08:13:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:29,130 INFO L495 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2022-07-12 08:13:29,131 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) [2022-07-12 08:13:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2022-07-12 08:13:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 08:13:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:29,336 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] [2022-07-12 08:13:29,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:13:29,550 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 [2022-07-12 08:13:29,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2022-07-12 08:13:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:29,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940064453] [2022-07-12 08:13:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:13:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:13:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:13:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:13:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:13:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:13:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:13:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:13:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940064453] [2022-07-12 08:13:29,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940064453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:13:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600851008] [2022-07-12 08:13:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:29,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:13:29,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:29,670 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) [2022-07-12 08:13:29,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:13:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:13:29,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:13:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 08:13:29,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:13:29,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600851008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:29,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:13:29,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:13:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160926120] [2022-07-12 08:13:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:29,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:13:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:13:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:29,871 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)