./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d94a0143393d3950a5bf091072c53e220b7412d84326b758d723e55ee9dd42c8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:41:46,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:41:46,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:41:46,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:41:46,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:41:46,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:41:46,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:41:46,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:41:46,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:41:46,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:41:46,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:41:46,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:41:46,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:41:46,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:41:46,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:41:46,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:41:46,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:41:46,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:41:46,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:41:46,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:41:46,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:41:46,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:41:46,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:41:46,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:41:46,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:41:46,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:41:46,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:41:46,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:41:46,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:41:46,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:41:46,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:41:46,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:41:46,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:41:46,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:41:46,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:41:46,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:41:46,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:41:46,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:41:46,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:41:46,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:41:46,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:41:46,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:41:46,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:41:46,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:41:46,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:41:46,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:41:46,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:41:46,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:41:46,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:41:46,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:41:46,510 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:41:46,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:41:46,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:41:46,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:41:46,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:41:46,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:41:46,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:41:46,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:41:46,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:41:46,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94a0143393d3950a5bf091072c53e220b7412d84326b758d723e55ee9dd42c8 [2021-12-22 12:41:46,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:41:46,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:41:46,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:41:46,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:41:46,697 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:41:46,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c [2021-12-22 12:41:46,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfdd22d7/6ae8efcf27864641a31bc7db0b45397a/FLAGbb505e3c8 [2021-12-22 12:41:47,364 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:41:47,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c [2021-12-22 12:41:47,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfdd22d7/6ae8efcf27864641a31bc7db0b45397a/FLAGbb505e3c8 [2021-12-22 12:41:47,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfdd22d7/6ae8efcf27864641a31bc7db0b45397a [2021-12-22 12:41:47,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:41:47,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:41:47,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:41:47,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:41:47,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:41:47,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:41:47" (1/1) ... [2021-12-22 12:41:47,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccddf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:47, skipping insertion in model container [2021-12-22 12:41:47,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:41:47" (1/1) ... [2021-12-22 12:41:47,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:41:47,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:41:48,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[375709,375722] [2021-12-22 12:41:48,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[383339,383352] [2021-12-22 12:41:49,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:41:49,133 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:41:49,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[375709,375722] [2021-12-22 12:41:49,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.05.cil-1.c[383339,383352] [2021-12-22 12:41:49,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:41:49,770 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:41:49,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49 WrapperNode [2021-12-22 12:41:49,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:41:49,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:41:49,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:41:49,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:41:49,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:49,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,177 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2021-12-22 12:41:50,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:41:50,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:41:50,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:41:50,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:41:50,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:41:50,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:41:50,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:41:50,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:41:50,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (1/1) ... [2021-12-22 12:41:50,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:41:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:41:50,730 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) [2021-12-22 12:41:50,736 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 [2021-12-22 12:41:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:41:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:41:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:41:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:41:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:41:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:41:50,759 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:41:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:41:50,759 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:41:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:41:50,759 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:41:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:41:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:41:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:41:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:41:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:41:50,882 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:41:50,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:41:55,659 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:41:55,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:41:55,685 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-22 12:41:55,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:41:55 BoogieIcfgContainer [2021-12-22 12:41:55,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:41:55,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:41:55,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:41:55,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:41:55,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:41:47" (1/3) ... [2021-12-22 12:41:55,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503ceb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:41:55, skipping insertion in model container [2021-12-22 12:41:55,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:41:49" (2/3) ... [2021-12-22 12:41:55,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503ceb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:41:55, skipping insertion in model container [2021-12-22 12:41:55,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:41:55" (3/3) ... [2021-12-22 12:41:55,698 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.05.cil-1.c [2021-12-22 12:41:55,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:41:55,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:41:55,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:41:55,759 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:41:55,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:41:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 12:41:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:41:55,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:55,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:41:55,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2021-12-22 12:41:55,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670300510] [2021-12-22 12:41:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:55,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:41:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:41:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:41:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:41:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:56,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670300510] [2021-12-22 12:41:56,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670300510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:56,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:56,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:41:56,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442736399] [2021-12-22 12:41:56,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:56,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:41:56,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:41:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:41:56,199 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:41:56,886 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2021-12-22 12:41:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:41:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:41:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:41:56,912 INFO L225 Difference]: With dead ends: 4837 [2021-12-22 12:41:56,912 INFO L226 Difference]: Without dead ends: 2388 [2021-12-22 12:41:56,921 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:41:56,923 INFO L933 BasicCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12296 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16657 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:41:56,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 16657 Invalid, 385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:41:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-12-22 12:41:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2021-12-22 12:41:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 12:41:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2021-12-22 12:41:57,083 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2021-12-22 12:41:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:41:57,084 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2021-12-22 12:41:57,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2021-12-22 12:41:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:41:57,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:57,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:41:57,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:41:57,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2021-12-22 12:41:57,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:57,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696734927] [2021-12-22 12:41:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:57,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:41:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:41:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:41:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:41:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:57,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696734927] [2021-12-22 12:41:57,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696734927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:57,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:57,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:41:57,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275052773] [2021-12-22 12:41:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:57,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:41:57,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:41:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:41:57,268 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:41:58,322 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2021-12-22 12:41:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:41:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:41:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:41:58,333 INFO L225 Difference]: With dead ends: 2835 [2021-12-22 12:41:58,333 INFO L226 Difference]: Without dead ends: 2646 [2021-12-22 12:41:58,335 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:41:58,336 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12418 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16734 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:41:58,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 16734 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:41:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-12-22 12:41:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2021-12-22 12:41:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-22 12:41:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2021-12-22 12:41:58,387 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2021-12-22 12:41:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:41:58,388 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2021-12-22 12:41:58,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2021-12-22 12:41:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:41:58,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:58,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:41:58,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:41:58,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2021-12-22 12:41:58,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:58,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313151468] [2021-12-22 12:41:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:58,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:41:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:41:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:41:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:41:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:58,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:58,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313151468] [2021-12-22 12:41:58,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313151468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:58,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:58,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:41:58,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512364418] [2021-12-22 12:41:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:58,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:41:58,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:41:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:41:58,505 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:41:59,759 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2021-12-22 12:41:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:41:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:41:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:41:59,769 INFO L225 Difference]: With dead ends: 3293 [2021-12-22 12:41:59,769 INFO L226 Difference]: Without dead ends: 2910 [2021-12-22 12:41:59,772 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:41:59,772 INFO L933 BasicCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16854 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21315 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:41:59,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 21315 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:41:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-12-22 12:41:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2021-12-22 12:41:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-22 12:41:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2021-12-22 12:41:59,829 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2021-12-22 12:41:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:41:59,830 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2021-12-22 12:41:59,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:41:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2021-12-22 12:41:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:41:59,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:59,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:41:59,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:41:59,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2021-12-22 12:41:59,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322120763] [2021-12-22 12:41:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:59,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:41:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:41:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:41:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:41:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:59,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:59,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322120763] [2021-12-22 12:41:59,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322120763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:59,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:59,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:41:59,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572673591] [2021-12-22 12:41:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:59,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:41:59,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:41:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:41:59,934 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:01,199 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2021-12-22 12:42:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:01,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:01,211 INFO L225 Difference]: With dead ends: 3966 [2021-12-22 12:42:01,211 INFO L226 Difference]: Without dead ends: 3402 [2021-12-22 12:42:01,213 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:01,214 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:01,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 21299 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-12-22 12:42:01,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2021-12-22 12:42:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-22 12:42:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2021-12-22 12:42:01,301 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2021-12-22 12:42:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:01,302 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2021-12-22 12:42:01,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2021-12-22 12:42:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:01,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:01,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:01,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:42:01,309 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2021-12-22 12:42:01,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:01,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69333849] [2021-12-22 12:42:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:01,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:01,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:01,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69333849] [2021-12-22 12:42:01,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69333849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:01,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:01,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:01,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546150656] [2021-12-22 12:42:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:01,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:01,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:01,412 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:02,615 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2021-12-22 12:42:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:02,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:02,632 INFO L225 Difference]: With dead ends: 5270 [2021-12-22 12:42:02,632 INFO L226 Difference]: Without dead ends: 4340 [2021-12-22 12:42:02,636 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:02,637 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21294 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:02,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4716 Valid, 21294 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2021-12-22 12:42:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2021-12-22 12:42:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2021-12-22 12:42:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2021-12-22 12:42:02,732 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2021-12-22 12:42:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:02,732 INFO L470 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2021-12-22 12:42:02,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2021-12-22 12:42:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:02,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:02,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:02,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:42:02,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2021-12-22 12:42:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:02,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34702208] [2021-12-22 12:42:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:02,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:02,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34702208] [2021-12-22 12:42:02,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34702208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:02,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:02,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:02,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681025656] [2021-12-22 12:42:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:02,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:02,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:02,816 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:04,124 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2021-12-22 12:42:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:04,147 INFO L225 Difference]: With dead ends: 7877 [2021-12-22 12:42:04,148 INFO L226 Difference]: Without dead ends: 6214 [2021-12-22 12:42:04,155 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:04,156 INFO L933 BasicCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21289 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:04,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4715 Valid, 21289 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-12-22 12:42:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2021-12-22 12:42:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2021-12-22 12:42:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2021-12-22 12:42:04,323 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2021-12-22 12:42:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:04,323 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2021-12-22 12:42:04,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2021-12-22 12:42:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:04,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:04,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:04,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:42:04,327 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2021-12-22 12:42:04,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147458650] [2021-12-22 12:42:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:04,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:04,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:04,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147458650] [2021-12-22 12:42:04,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147458650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:04,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:04,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:04,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764740973] [2021-12-22 12:42:04,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:04,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:04,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:04,402 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:06,006 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2021-12-22 12:42:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:42:06,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:06,044 INFO L225 Difference]: With dead ends: 14356 [2021-12-22 12:42:06,045 INFO L226 Difference]: Without dead ends: 11220 [2021-12-22 12:42:06,056 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:06,056 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16527 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20846 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:06,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 20846 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-12-22 12:42:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2021-12-22 12:42:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2021-12-22 12:42:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2021-12-22 12:42:06,380 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2021-12-22 12:42:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:06,381 INFO L470 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2021-12-22 12:42:06,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2021-12-22 12:42:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:06,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:06,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:06,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:42:06,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2021-12-22 12:42:06,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:06,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199603494] [2021-12-22 12:42:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:06,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:06,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:06,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199603494] [2021-12-22 12:42:06,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199603494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:06,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:06,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:06,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506335420] [2021-12-22 12:42:06,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:06,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:06,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:06,474 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:08,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:08,456 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2021-12-22 12:42:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:42:08,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:08,502 INFO L225 Difference]: With dead ends: 25523 [2021-12-22 12:42:08,503 INFO L226 Difference]: Without dead ends: 19474 [2021-12-22 12:42:08,522 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:08,523 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16839 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21341 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:08,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4754 Valid, 21341 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:42:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2021-12-22 12:42:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2021-12-22 12:42:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2021-12-22 12:42:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2021-12-22 12:42:09,007 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2021-12-22 12:42:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:09,008 INFO L470 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2021-12-22 12:42:09,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2021-12-22 12:42:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:09,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:09,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:09,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:42:09,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2021-12-22 12:42:09,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:09,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017807683] [2021-12-22 12:42:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:09,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:09,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017807683] [2021-12-22 12:42:09,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017807683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:09,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:09,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:09,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399787641] [2021-12-22 12:42:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:09,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:09,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:09,085 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:11,731 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2021-12-22 12:42:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:42:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:11,832 INFO L225 Difference]: With dead ends: 46786 [2021-12-22 12:42:11,832 INFO L226 Difference]: Without dead ends: 35088 [2021-12-22 12:42:11,872 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:11,874 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16842 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21264 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:11,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4853 Valid, 21264 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2021-12-22 12:42:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2021-12-22 12:42:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2021-12-22 12:42:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2021-12-22 12:42:13,089 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2021-12-22 12:42:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:13,089 INFO L470 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2021-12-22 12:42:13,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2021-12-22 12:42:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:13,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:13,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:13,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:42:13,105 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2021-12-22 12:42:13,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:13,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459427396] [2021-12-22 12:42:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:13,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:13,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459427396] [2021-12-22 12:42:13,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459427396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:13,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:13,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:13,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068590460] [2021-12-22 12:42:13,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:13,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:13,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:13,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:13,188 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:17,361 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2021-12-22 12:42:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:42:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:17,613 INFO L225 Difference]: With dead ends: 88545 [2021-12-22 12:42:17,614 INFO L226 Difference]: Without dead ends: 65422 [2021-12-22 12:42:17,677 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:17,677 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16842 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:17,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4816 Valid, 21257 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:42:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2021-12-22 12:42:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2021-12-22 12:42:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-22 12:42:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2021-12-22 12:42:20,204 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2021-12-22 12:42:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:20,205 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2021-12-22 12:42:20,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2021-12-22 12:42:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:20,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:20,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:20,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:42:20,234 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2021-12-22 12:42:20,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:20,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095857789] [2021-12-22 12:42:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:20,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:20,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:20,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095857789] [2021-12-22 12:42:20,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095857789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:20,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:20,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:20,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586973902] [2021-12-22 12:42:20,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:20,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:20,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:20,325 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:24,059 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2021-12-22 12:42:24,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:42:24,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:24,285 INFO L225 Difference]: With dead ends: 105804 [2021-12-22 12:42:24,285 INFO L226 Difference]: Without dead ends: 59896 [2021-12-22 12:42:24,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:42:24,383 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20556 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:24,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4521 Valid, 20556 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 12:42:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2021-12-22 12:42:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2021-12-22 12:42:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-22 12:42:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2021-12-22 12:42:27,240 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2021-12-22 12:42:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:27,240 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2021-12-22 12:42:27,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2021-12-22 12:42:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:42:27,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:27,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:27,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:42:27,267 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2021-12-22 12:42:27,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:27,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078054837] [2021-12-22 12:42:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:27,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:27,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:27,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078054837] [2021-12-22 12:42:27,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078054837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:27,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:27,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:42:27,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539064382] [2021-12-22 12:42:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:27,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:42:27,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:42:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:42:27,343 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:33,242 INFO L93 Difference]: Finished difference Result 133917 states and 218160 transitions. [2021-12-22 12:42:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:42:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-22 12:42:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:33,495 INFO L225 Difference]: With dead ends: 133917 [2021-12-22 12:42:33,495 INFO L226 Difference]: Without dead ends: 88010 [2021-12-22 12:42:33,696 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:33,696 INFO L933 BasicCegarLoop]: 4560 mSDtfsCounter, 4915 mSDsluCounter, 12519 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17079 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:33,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 17079 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:42:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88010 states. [2021-12-22 12:42:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88010 to 70805. [2021-12-22 12:42:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70805 states, 63397 states have (on average 1.525561146426487) internal successors, (96716), 63912 states have internal predecessors, (96716), 4706 states have call successors, (4706), 2316 states have call predecessors, (4706), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2021-12-22 12:42:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70805 states to 70805 states and 115133 transitions. [2021-12-22 12:42:37,410 INFO L78 Accepts]: Start accepts. Automaton has 70805 states and 115133 transitions. Word has length 101 [2021-12-22 12:42:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:37,410 INFO L470 AbstractCegarLoop]: Abstraction has 70805 states and 115133 transitions. [2021-12-22 12:42:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:42:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 70805 states and 115133 transitions. [2021-12-22 12:42:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 12:42:37,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:37,547 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:37,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 12:42:37,547 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1967377923, now seen corresponding path program 1 times [2021-12-22 12:42:37,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:37,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742057906] [2021-12-22 12:42:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:37,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 12:42:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 12:42:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 12:42:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:42:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 12:42:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 12:42:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 12:42:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 12:42:37,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:37,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742057906] [2021-12-22 12:42:37,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742057906] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:42:37,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724099569] [2021-12-22 12:42:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:37,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:42:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:42:37,840 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) [2021-12-22 12:42:37,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 12:42:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:37,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 12:42:37,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:42:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 12:42:38,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:42:38,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724099569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:38,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 12:42:38,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-22 12:42:38,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188344144] [2021-12-22 12:42:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:38,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:42:38,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:42:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:42:38,178 INFO L87 Difference]: Start difference. First operand 70805 states and 115133 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 12:42:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:44,458 INFO L93 Difference]: Finished difference Result 206790 states and 337441 transitions. [2021-12-22 12:42:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:42:44,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2021-12-22 12:42:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted.