./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL --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 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:34:56,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:34:56,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:34:56,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:34:56,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:34:56,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:34:56,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:34:56,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:34:56,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:34:56,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:34:56,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:34:56,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:34:56,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:34:56,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:34:56,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:34:56,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:34:56,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:34:56,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:34:56,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:34:56,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:34:56,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:34:56,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:34:56,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:34:56,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:34:56,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:34:56,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:34:56,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:34:56,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:34:56,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:34:56,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:34:56,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:34:56,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:34:56,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:34:56,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:34:56,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:34:56,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:34:56,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:34:56,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:34:56,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:34:56,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:34:56,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:34:56,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:34:56,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:34:56,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:34:56,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:34:56,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:34:56,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:34:56,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:34:56,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:34:56,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:34:56,518 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:34:56,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:34:56,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:34:56,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:34:56,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:34:56,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:34:56,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:34:56,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:34:56,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:34:56,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:34:56,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:34:56,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:34:56,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:34:56,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:34:56,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:34:56,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:34:56,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:34:56,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:34:56,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:34:56,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:34:56,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:34:56,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:34:56,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:34:56,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:34:56,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:34:56,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:34:56,530 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 [2021-11-19 04:34:56,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:34:56,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:34:56,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:34:56,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:34:56,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:34:56,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2021-11-19 04:34:56,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/data/671673394/db2a0413031f4929aa5f27e78a95ef03/FLAG9319205f3 [2021-11-19 04:34:57,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:34:57,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2021-11-19 04:34:57,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/data/671673394/db2a0413031f4929aa5f27e78a95ef03/FLAG9319205f3 [2021-11-19 04:34:58,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/data/671673394/db2a0413031f4929aa5f27e78a95ef03 [2021-11-19 04:34:58,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:34:58,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:34:58,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:34:58,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:34:58,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:34:58,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:34:58" (1/1) ... [2021-11-19 04:34:58,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542d6dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:34:58, skipping insertion in model container [2021-11-19 04:34:58,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:34:58" (1/1) ... [2021-11-19 04:34:58,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:34:58,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:34:58,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2021-11-19 04:35:00,029 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:35:00,045 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:35:00,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2021-11-19 04:35:00,773 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:35:00,805 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:35:00,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00 WrapperNode [2021-11-19 04:35:00,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:35:00,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:35:00,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:35:00,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:35:00,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:00,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,391 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-11-19 04:35:01,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:35:01,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:35:01,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:35:01,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:35:01,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:35:01,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:35:01,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:35:01,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:35:01,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (1/1) ... [2021-11-19 04:35:01,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:35:01,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:35:01,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:35:02,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:35:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:35:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:35:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:35:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:35:02,201 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:35:02,203 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:35:07,694 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:35:07,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:35:07,725 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:35:07,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:35:07 BoogieIcfgContainer [2021-11-19 04:35:07,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:35:07,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:35:07,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:35:07,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:35:07,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:34:58" (1/3) ... [2021-11-19 04:35:07,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368a7dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:35:07, skipping insertion in model container [2021-11-19 04:35:07,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:35:00" (2/3) ... [2021-11-19 04:35:07,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368a7dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:35:07, skipping insertion in model container [2021-11-19 04:35:07,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:35:07" (3/3) ... [2021-11-19 04:35:07,744 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2021-11-19 04:35:07,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:35:07,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:35:07,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:35:07,860 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 [2021-11-19 04:35:07,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:35:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 04:35:07,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:07,922 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] [2021-11-19 04:35:07,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2021-11-19 04:35:07,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:07,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727421449] [2021-11-19 04:35:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:07,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:35:08,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:08,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727421449] [2021-11-19 04:35:08,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727421449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:08,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:08,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:35:08,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344939961] [2021-11-19 04:35:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:08,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:08,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:08,286 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:13,558 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-11-19 04:35:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:13,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-19 04:35:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:13,602 INFO L225 Difference]: With dead ends: 2388 [2021-11-19 04:35:13,602 INFO L226 Difference]: Without dead ends: 1506 [2021-11-19 04:35:13,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:13,615 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 787 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:13,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 04:35:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-11-19 04:35:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-11-19 04:35:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2021-11-19 04:35:13,816 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 47 [2021-11-19 04:35:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:13,817 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2021-11-19 04:35:13,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2021-11-19 04:35:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 04:35:13,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:13,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:35:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:35:13,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1500828227, now seen corresponding path program 1 times [2021-11-19 04:35:13,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:13,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428811390] [2021-11-19 04:35:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:13,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:35:14,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:14,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428811390] [2021-11-19 04:35:14,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428811390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:14,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:14,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:14,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248148007] [2021-11-19 04:35:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:14,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:35:14,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:35:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:35:14,257 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:20,417 INFO L93 Difference]: Finished difference Result 4551 states and 7431 transitions. [2021-11-19 04:35:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:35:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-19 04:35:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:20,441 INFO L225 Difference]: With dead ends: 4551 [2021-11-19 04:35:20,441 INFO L226 Difference]: Without dead ends: 3010 [2021-11-19 04:35:20,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:35:20,452 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 692 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 4397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:20,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 658 Invalid, 4397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 04:35:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-11-19 04:35:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2021-11-19 04:35:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3418689723977386) internal successors, (4035), 3007 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4035 transitions. [2021-11-19 04:35:20,551 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4035 transitions. Word has length 118 [2021-11-19 04:35:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:20,555 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4035 transitions. [2021-11-19 04:35:20,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4035 transitions. [2021-11-19 04:35:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 04:35:20,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:20,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:35:20,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:35:20,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash -94536638, now seen corresponding path program 1 times [2021-11-19 04:35:20,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:20,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850852444] [2021-11-19 04:35:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:20,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:35:20,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:20,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850852444] [2021-11-19 04:35:20,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850852444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:20,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:20,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:20,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246142318] [2021-11-19 04:35:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:20,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:35:20,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:35:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:35:20,806 INFO L87 Difference]: Start difference. First operand 3008 states and 4035 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:26,717 INFO L93 Difference]: Finished difference Result 9769 states and 12895 transitions. [2021-11-19 04:35:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:35:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-19 04:35:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:26,759 INFO L225 Difference]: With dead ends: 9769 [2021-11-19 04:35:26,759 INFO L226 Difference]: Without dead ends: 6763 [2021-11-19 04:35:26,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:35:26,765 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 2094 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:26,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2094 Valid, 451 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 04:35:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-11-19 04:35:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2021-11-19 04:35:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.2877846790890268) internal successors, (8708), 6762 states have internal predecessors, (8708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8708 transitions. [2021-11-19 04:35:26,941 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8708 transitions. Word has length 156 [2021-11-19 04:35:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:26,942 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 8708 transitions. [2021-11-19 04:35:26,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8708 transitions. [2021-11-19 04:35:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-19 04:35:26,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:26,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:35:26,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:35:26,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash -282317822, now seen corresponding path program 1 times [2021-11-19 04:35:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:26,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681909922] [2021-11-19 04:35:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:26,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-19 04:35:27,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:27,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681909922] [2021-11-19 04:35:27,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681909922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:27,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:27,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:27,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770620521] [2021-11-19 04:35:27,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:27,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:35:27,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:35:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:35:27,152 INFO L87 Difference]: Start difference. First operand 6763 states and 8708 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:31,169 INFO L93 Difference]: Finished difference Result 15816 states and 21400 transitions. [2021-11-19 04:35:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:35:31,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-11-19 04:35:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:31,231 INFO L225 Difference]: With dead ends: 15816 [2021-11-19 04:35:31,231 INFO L226 Difference]: Without dead ends: 9769 [2021-11-19 04:35:31,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:35:31,242 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 851 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:31,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 494 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 04:35:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2021-11-19 04:35:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2021-11-19 04:35:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2733975015359411) internal successors, (12436), 9766 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12436 transitions. [2021-11-19 04:35:31,580 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12436 transitions. Word has length 259 [2021-11-19 04:35:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 9767 states and 12436 transitions. [2021-11-19 04:35:31,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12436 transitions. [2021-11-19 04:35:31,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-19 04:35:31,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:31,590 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-11-19 04:35:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:35:31,591 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1708577746, now seen corresponding path program 1 times [2021-11-19 04:35:31,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:31,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293947408] [2021-11-19 04:35:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:31,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 04:35:31,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:31,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293947408] [2021-11-19 04:35:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293947408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:31,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:35:31,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595072593] [2021-11-19 04:35:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:31,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:31,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:31,845 INFO L87 Difference]: Start difference. First operand 9767 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:35,191 INFO L93 Difference]: Finished difference Result 26291 states and 34162 transitions. [2021-11-19 04:35:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-11-19 04:35:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:35,250 INFO L225 Difference]: With dead ends: 26291 [2021-11-19 04:35:35,250 INFO L226 Difference]: Without dead ends: 17277 [2021-11-19 04:35:35,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:35,266 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:35,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 598 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 04:35:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2021-11-19 04:35:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 17277. [2021-11-19 04:35:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17277 states, 17276 states have (on average 1.1980203750868257) internal successors, (20697), 17276 states have internal predecessors, (20697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17277 states to 17277 states and 20697 transitions. [2021-11-19 04:35:35,625 INFO L78 Accepts]: Start accepts. Automaton has 17277 states and 20697 transitions. Word has length 262 [2021-11-19 04:35:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:35,626 INFO L470 AbstractCegarLoop]: Abstraction has 17277 states and 20697 transitions. [2021-11-19 04:35:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17277 states and 20697 transitions. [2021-11-19 04:35:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-19 04:35:35,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:35,637 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:35:35,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:35:35,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1863466117, now seen corresponding path program 1 times [2021-11-19 04:35:35,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:35,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642700024] [2021-11-19 04:35:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:35,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 04:35:35,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:35,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642700024] [2021-11-19 04:35:35,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642700024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:35,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:35,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:35,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348362538] [2021-11-19 04:35:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:35,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:35,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:35,833 INFO L87 Difference]: Start difference. First operand 17277 states and 20697 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:39,239 INFO L93 Difference]: Finished difference Result 33801 states and 40636 transitions. [2021-11-19 04:35:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2021-11-19 04:35:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:39,277 INFO L225 Difference]: With dead ends: 33801 [2021-11-19 04:35:39,278 INFO L226 Difference]: Without dead ends: 17277 [2021-11-19 04:35:39,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:39,299 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:39,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1241 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 04:35:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2021-11-19 04:35:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526. [2021-11-19 04:35:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.1696217851739787) internal successors, (19328), 16525 states have internal predecessors, (19328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19328 transitions. [2021-11-19 04:35:39,578 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 19328 transitions. Word has length 277 [2021-11-19 04:35:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:39,579 INFO L470 AbstractCegarLoop]: Abstraction has 16526 states and 19328 transitions. [2021-11-19 04:35:39,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 19328 transitions. [2021-11-19 04:35:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-19 04:35:39,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:39,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:35:39,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:35:39,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 268294806, now seen corresponding path program 1 times [2021-11-19 04:35:39,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:39,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843958192] [2021-11-19 04:35:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:39,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 04:35:39,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:39,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843958192] [2021-11-19 04:35:39,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843958192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:39,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:39,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:39,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372251654] [2021-11-19 04:35:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:39,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:39,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:39,843 INFO L87 Difference]: Start difference. First operand 16526 states and 19328 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:42,833 INFO L93 Difference]: Finished difference Result 38307 states and 44492 transitions. [2021-11-19 04:35:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2021-11-19 04:35:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:42,879 INFO L225 Difference]: With dead ends: 38307 [2021-11-19 04:35:42,879 INFO L226 Difference]: Without dead ends: 22534 [2021-11-19 04:35:42,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:42,900 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 820 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:42,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 106 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:35:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2021-11-19 04:35:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 19530. [2021-11-19 04:35:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 19529 states have (on average 1.1496236366429413) internal successors, (22451), 19529 states have internal predecessors, (22451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 22451 transitions. [2021-11-19 04:35:43,319 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 22451 transitions. Word has length 278 [2021-11-19 04:35:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:43,320 INFO L470 AbstractCegarLoop]: Abstraction has 19530 states and 22451 transitions. [2021-11-19 04:35:43,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 22451 transitions. [2021-11-19 04:35:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-19 04:35:43,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:43,330 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:35:43,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:35:43,331 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1094495380, now seen corresponding path program 1 times [2021-11-19 04:35:43,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:43,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374533728] [2021-11-19 04:35:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:43,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 04:35:43,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:43,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374533728] [2021-11-19 04:35:43,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374533728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:43,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:43,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:43,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523407399] [2021-11-19 04:35:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:43,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:43,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:43,492 INFO L87 Difference]: Start difference. First operand 19530 states and 22451 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:46,721 INFO L93 Difference]: Finished difference Result 45817 states and 53568 transitions. [2021-11-19 04:35:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2021-11-19 04:35:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:46,771 INFO L225 Difference]: With dead ends: 45817 [2021-11-19 04:35:46,771 INFO L226 Difference]: Without dead ends: 27040 [2021-11-19 04:35:46,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:46,790 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:46,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1204 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 04:35:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2021-11-19 04:35:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2021-11-19 04:35:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.13243832981989) internal successors, (30620), 27039 states have internal predecessors, (30620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30620 transitions. [2021-11-19 04:35:47,217 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30620 transitions. Word has length 346 [2021-11-19 04:35:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:47,218 INFO L470 AbstractCegarLoop]: Abstraction has 27040 states and 30620 transitions. [2021-11-19 04:35:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30620 transitions. [2021-11-19 04:35:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-19 04:35:47,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:47,225 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:35:47,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:35:47,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 34930938, now seen corresponding path program 1 times [2021-11-19 04:35:47,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:47,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565253596] [2021-11-19 04:35:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:47,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 04:35:47,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:47,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565253596] [2021-11-19 04:35:47,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565253596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:47,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:47,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:47,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758345153] [2021-11-19 04:35:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:47,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:47,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:47,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:47,431 INFO L87 Difference]: Start difference. First operand 27040 states and 30620 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:51,129 INFO L93 Difference]: Finished difference Result 67596 states and 76817 transitions. [2021-11-19 04:35:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-19 04:35:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:51,179 INFO L225 Difference]: With dead ends: 67596 [2021-11-19 04:35:51,179 INFO L226 Difference]: Without dead ends: 41309 [2021-11-19 04:35:51,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:51,199 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 645 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:51,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 1222 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 04:35:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41309 states. [2021-11-19 04:35:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41309 to 40558. [2021-11-19 04:35:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 40557 states have (on average 1.126537958922011) internal successors, (45689), 40557 states have internal predecessors, (45689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 45689 transitions. [2021-11-19 04:35:51,815 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 45689 transitions. Word has length 374 [2021-11-19 04:35:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:51,816 INFO L470 AbstractCegarLoop]: Abstraction has 40558 states and 45689 transitions. [2021-11-19 04:35:51,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 45689 transitions. [2021-11-19 04:35:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-19 04:35:51,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:51,824 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:35:51,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:35:51,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1471075396, now seen corresponding path program 1 times [2021-11-19 04:35:51,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:51,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705765282] [2021-11-19 04:35:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:51,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-19 04:35:52,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:52,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705765282] [2021-11-19 04:35:52,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705765282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:52,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:52,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:52,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890828979] [2021-11-19 04:35:52,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:52,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:52,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:52,025 INFO L87 Difference]: Start difference. First operand 40558 states and 45689 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:35:56,068 INFO L93 Difference]: Finished difference Result 98387 states and 112071 transitions. [2021-11-19 04:35:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:35:56,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-11-19 04:35:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:35:56,138 INFO L225 Difference]: With dead ends: 98387 [2021-11-19 04:35:56,138 INFO L226 Difference]: Without dead ends: 53325 [2021-11-19 04:35:56,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:56,166 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 746 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:35:56,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1294 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 04:35:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2021-11-19 04:35:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 52574. [2021-11-19 04:35:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52574 states, 52573 states have (on average 1.1147547220055922) internal successors, (58606), 52573 states have internal predecessors, (58606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52574 states to 52574 states and 58606 transitions. [2021-11-19 04:35:56,893 INFO L78 Accepts]: Start accepts. Automaton has 52574 states and 58606 transitions. Word has length 378 [2021-11-19 04:35:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:35:56,894 INFO L470 AbstractCegarLoop]: Abstraction has 52574 states and 58606 transitions. [2021-11-19 04:35:56,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:35:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 52574 states and 58606 transitions. [2021-11-19 04:35:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-19 04:35:56,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:35:56,913 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-19 04:35:56,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:35:56,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:35:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:35:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -219790699, now seen corresponding path program 1 times [2021-11-19 04:35:56,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:35:56,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126174166] [2021-11-19 04:35:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:35:56,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:35:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:35:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-19 04:35:57,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:35:57,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126174166] [2021-11-19 04:35:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126174166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:35:57,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:35:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:35:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886601702] [2021-11-19 04:35:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:35:57,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:35:57,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:35:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:35:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:35:57,120 INFO L87 Difference]: Start difference. First operand 52574 states and 58606 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:01,344 INFO L93 Difference]: Finished difference Result 105146 states and 117234 transitions. [2021-11-19 04:36:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:01,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2021-11-19 04:36:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:01,403 INFO L225 Difference]: With dead ends: 105146 [2021-11-19 04:36:01,403 INFO L226 Difference]: Without dead ends: 53325 [2021-11-19 04:36:01,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:01,426 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:01,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 260 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 04:36:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2021-11-19 04:36:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 51072. [2021-11-19 04:36:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51072 states, 51071 states have (on average 1.112138003955278) internal successors, (56798), 51071 states have internal predecessors, (56798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 56798 transitions. [2021-11-19 04:36:02,317 INFO L78 Accepts]: Start accepts. Automaton has 51072 states and 56798 transitions. Word has length 450 [2021-11-19 04:36:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:02,319 INFO L470 AbstractCegarLoop]: Abstraction has 51072 states and 56798 transitions. [2021-11-19 04:36:02,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 51072 states and 56798 transitions. [2021-11-19 04:36:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-19 04:36:02,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:02,339 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 04:36:02,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:36:02,340 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1195609237, now seen corresponding path program 1 times [2021-11-19 04:36:02,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:02,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482289134] [2021-11-19 04:36:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:02,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 04:36:02,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:02,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482289134] [2021-11-19 04:36:02,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482289134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:02,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:36:02,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:36:02,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150662345] [2021-11-19 04:36:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:02,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:02,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:02,834 INFO L87 Difference]: Start difference. First operand 51072 states and 56798 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:06,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:06,382 INFO L93 Difference]: Finished difference Result 104395 states and 115909 transitions. [2021-11-19 04:36:06,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:06,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 461 [2021-11-19 04:36:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:06,443 INFO L225 Difference]: With dead ends: 104395 [2021-11-19 04:36:06,443 INFO L226 Difference]: Without dead ends: 54076 [2021-11-19 04:36:06,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:06,463 INFO L933 BasicCegarLoop]: 1169 mSDtfsCounter, 738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:06,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1176 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 04:36:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54076 states. [2021-11-19 04:36:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54076 to 52574. [2021-11-19 04:36:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52574 states, 52573 states have (on average 1.071177220246134) internal successors, (56315), 52573 states have internal predecessors, (56315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52574 states to 52574 states and 56315 transitions. [2021-11-19 04:36:07,315 INFO L78 Accepts]: Start accepts. Automaton has 52574 states and 56315 transitions. Word has length 461 [2021-11-19 04:36:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:07,316 INFO L470 AbstractCegarLoop]: Abstraction has 52574 states and 56315 transitions. [2021-11-19 04:36:07,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 52574 states and 56315 transitions. [2021-11-19 04:36:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2021-11-19 04:36:07,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:07,332 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:36:07,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 04:36:07,333 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash -940077494, now seen corresponding path program 1 times [2021-11-19 04:36:07,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:07,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337348001] [2021-11-19 04:36:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:07,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-19 04:36:07,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:07,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337348001] [2021-11-19 04:36:07,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337348001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:07,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:36:07,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:36:07,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567874092] [2021-11-19 04:36:07,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:07,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:07,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:07,814 INFO L87 Difference]: Start difference. First operand 52574 states and 56315 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:11,524 INFO L93 Difference]: Finished difference Result 143447 states and 154116 transitions. [2021-11-19 04:36:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2021-11-19 04:36:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:11,630 INFO L225 Difference]: With dead ends: 143447 [2021-11-19 04:36:11,630 INFO L226 Difference]: Without dead ends: 91626 [2021-11-19 04:36:11,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:11,802 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 656 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:11,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1319 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 04:36:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91626 states. [2021-11-19 04:36:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91626 to 82614. [2021-11-19 04:36:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82614 states, 82613 states have (on average 1.060474743684408) internal successors, (87609), 82613 states have internal predecessors, (87609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82614 states to 82614 states and 87609 transitions. [2021-11-19 04:36:12,783 INFO L78 Accepts]: Start accepts. Automaton has 82614 states and 87609 transitions. Word has length 488 [2021-11-19 04:36:12,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:12,784 INFO L470 AbstractCegarLoop]: Abstraction has 82614 states and 87609 transitions. [2021-11-19 04:36:12,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 82614 states and 87609 transitions. [2021-11-19 04:36:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2021-11-19 04:36:12,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:12,792 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 04:36:12,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 04:36:12,792 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1231520266, now seen corresponding path program 1 times [2021-11-19 04:36:12,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:12,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326656623] [2021-11-19 04:36:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:12,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-19 04:36:13,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:13,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326656623] [2021-11-19 04:36:13,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326656623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:13,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:36:13,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:36:13,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326055351] [2021-11-19 04:36:13,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:13,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:13,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:13,255 INFO L87 Difference]: Start difference. First operand 82614 states and 87609 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:17,346 INFO L93 Difference]: Finished difference Result 186254 states and 198757 transitions. [2021-11-19 04:36:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2021-11-19 04:36:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:17,473 INFO L225 Difference]: With dead ends: 186254 [2021-11-19 04:36:17,473 INFO L226 Difference]: Without dead ends: 104393 [2021-11-19 04:36:17,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:17,507 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 668 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:17,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1278 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 04:36:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104393 states. [2021-11-19 04:36:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104393 to 101389. [2021-11-19 04:36:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101389 states, 101388 states have (on average 1.055479938454255) internal successors, (107013), 101388 states have internal predecessors, (107013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101389 states to 101389 states and 107013 transitions. [2021-11-19 04:36:19,424 INFO L78 Accepts]: Start accepts. Automaton has 101389 states and 107013 transitions. Word has length 488 [2021-11-19 04:36:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:19,425 INFO L470 AbstractCegarLoop]: Abstraction has 101389 states and 107013 transitions. [2021-11-19 04:36:19,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 101389 states and 107013 transitions. [2021-11-19 04:36:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2021-11-19 04:36:19,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:19,439 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2021-11-19 04:36:19,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 04:36:19,439 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1212922014, now seen corresponding path program 1 times [2021-11-19 04:36:19,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:19,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094130887] [2021-11-19 04:36:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:19,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-19 04:36:19,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:19,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094130887] [2021-11-19 04:36:19,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094130887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:19,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:36:19,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:36:19,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499272415] [2021-11-19 04:36:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:19,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:19,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:19,752 INFO L87 Difference]: Start difference. First operand 101389 states and 107013 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:23,565 INFO L93 Difference]: Finished difference Result 205780 states and 217112 transitions. [2021-11-19 04:36:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 536 [2021-11-19 04:36:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:23,714 INFO L225 Difference]: With dead ends: 205780 [2021-11-19 04:36:23,714 INFO L226 Difference]: Without dead ends: 102891 [2021-11-19 04:36:23,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:36:23,754 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 675 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:23,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1305 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 04:36:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2021-11-19 04:36:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 102891. [2021-11-19 04:36:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.0535134609777432) internal successors, (108396), 102890 states have internal predecessors, (108396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 108396 transitions. [2021-11-19 04:36:25,377 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 108396 transitions. Word has length 536 [2021-11-19 04:36:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:25,377 INFO L470 AbstractCegarLoop]: Abstraction has 102891 states and 108396 transitions. [2021-11-19 04:36:25,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 108396 transitions. [2021-11-19 04:36:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-19 04:36:25,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:25,389 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2021-11-19 04:36:25,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 04:36:25,390 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1768587887, now seen corresponding path program 1 times [2021-11-19 04:36:25,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:25,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186856550] [2021-11-19 04:36:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:25,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 398 proven. 240 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 04:36:25,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:25,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186856550] [2021-11-19 04:36:25,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186856550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:36:25,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101234217] [2021-11-19 04:36:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:25,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:36:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:36:25,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:36:25,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:36:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:26,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:36:26,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:36:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-19 04:36:27,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:36:27,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101234217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:27,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:36:27,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-19 04:36:27,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785681721] [2021-11-19 04:36:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:27,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:27,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:27,638 INFO L87 Difference]: Start difference. First operand 102891 states and 108396 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:31,537 INFO L93 Difference]: Finished difference Result 221551 states and 233499 transitions. [2021-11-19 04:36:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 542 [2021-11-19 04:36:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:31,705 INFO L225 Difference]: With dead ends: 221551 [2021-11-19 04:36:31,705 INFO L226 Difference]: Without dead ends: 119413 [2021-11-19 04:36:31,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:31,739 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 827 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:31,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1117 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:36:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2021-11-19 04:36:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2021-11-19 04:36:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0493602710845944) internal successors, (122942), 117159 states have internal predecessors, (122942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 122942 transitions. [2021-11-19 04:36:33,231 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 122942 transitions. Word has length 542 [2021-11-19 04:36:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:33,232 INFO L470 AbstractCegarLoop]: Abstraction has 117160 states and 122942 transitions. [2021-11-19 04:36:33,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 122942 transitions. [2021-11-19 04:36:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2021-11-19 04:36:33,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:33,258 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:36:33,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 04:36:33,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:36:33,460 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1478363861, now seen corresponding path program 1 times [2021-11-19 04:36:33,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:33,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800605734] [2021-11-19 04:36:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:33,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 451 proven. 360 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 04:36:34,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:34,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800605734] [2021-11-19 04:36:34,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800605734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:36:34,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145994683] [2021-11-19 04:36:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:34,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:36:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:36:34,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:36:34,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:36:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:34,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:36:34,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:36:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-19 04:36:37,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:36:37,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145994683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:37,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:36:37,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-19 04:36:37,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228231859] [2021-11-19 04:36:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:37,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:37,809 INFO L87 Difference]: Start difference. First operand 117160 states and 122942 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:41,224 INFO L93 Difference]: Finished difference Result 235069 states and 246634 transitions. [2021-11-19 04:36:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:41,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 725 [2021-11-19 04:36:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:41,381 INFO L225 Difference]: With dead ends: 235069 [2021-11-19 04:36:41,381 INFO L226 Difference]: Without dead ends: 117160 [2021-11-19 04:36:41,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:41,436 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 489 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:41,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1351 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 04:36:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2021-11-19 04:36:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 116409. [2021-11-19 04:36:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116409 states, 116408 states have (on average 1.045684145419559) internal successors, (121726), 116408 states have internal predecessors, (121726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116409 states to 116409 states and 121726 transitions. [2021-11-19 04:36:43,276 INFO L78 Accepts]: Start accepts. Automaton has 116409 states and 121726 transitions. Word has length 725 [2021-11-19 04:36:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 116409 states and 121726 transitions. [2021-11-19 04:36:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 116409 states and 121726 transitions. [2021-11-19 04:36:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-19 04:36:43,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:43,301 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2021-11-19 04:36:43,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:36:43,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-19 04:36:43,516 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:43,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 799646942, now seen corresponding path program 1 times [2021-11-19 04:36:43,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:43,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456584142] [2021-11-19 04:36:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:43,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 597 proven. 45 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-19 04:36:44,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:44,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456584142] [2021-11-19 04:36:44,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456584142] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:36:44,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800844049] [2021-11-19 04:36:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:44,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:36:44,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:36:44,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:36:44,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:36:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:36:44,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:36:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-19 04:36:47,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:36:47,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800844049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:47,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:36:47,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-19 04:36:47,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008964755] [2021-11-19 04:36:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:47,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:47,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:47,546 INFO L87 Difference]: Start difference. First operand 116409 states and 121726 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:36:50,963 INFO L93 Difference]: Finished difference Result 232816 states and 243461 transitions. [2021-11-19 04:36:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:36:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 775 [2021-11-19 04:36:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:36:51,115 INFO L225 Difference]: With dead ends: 232816 [2021-11-19 04:36:51,116 INFO L226 Difference]: Without dead ends: 117160 [2021-11-19 04:36:51,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:36:51,154 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 489 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:36:51,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1308 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:36:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2021-11-19 04:36:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 117160. [2021-11-19 04:36:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0441707423245332) internal successors, (122334), 117159 states have internal predecessors, (122334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 122334 transitions. [2021-11-19 04:36:52,819 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 122334 transitions. Word has length 775 [2021-11-19 04:36:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:36:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 117160 states and 122334 transitions. [2021-11-19 04:36:52,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:36:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 122334 transitions. [2021-11-19 04:36:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2021-11-19 04:36:52,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:36:52,849 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:36:52,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 04:36:53,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-19 04:36:53,063 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:36:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:36:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1311023516, now seen corresponding path program 1 times [2021-11-19 04:36:53,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:36:53,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821062277] [2021-11-19 04:36:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:53,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:36:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 538 proven. 592 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 04:36:54,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:36:54,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821062277] [2021-11-19 04:36:54,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821062277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:36:54,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922761301] [2021-11-19 04:36:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:36:54,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:36:54,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:36:54,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:36:54,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:36:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:36:54,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:36:54,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:36:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 714 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2021-11-19 04:36:57,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:36:57,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922761301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:36:57,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:36:57,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-19 04:36:57,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998185518] [2021-11-19 04:36:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:36:57,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:36:57,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:36:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:36:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:36:57,195 INFO L87 Difference]: Start difference. First operand 117160 states and 122334 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:00,577 INFO L93 Difference]: Finished difference Result 235069 states and 245433 transitions. [2021-11-19 04:37:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:37:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 802 [2021-11-19 04:37:00,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:00,714 INFO L225 Difference]: With dead ends: 235069 [2021-11-19 04:37:00,714 INFO L226 Difference]: Without dead ends: 116409 [2021-11-19 04:37:00,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:37:00,759 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 489 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:00,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1357 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:37:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116409 states. [2021-11-19 04:37:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 115658. [2021-11-19 04:37:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0437759928063153) internal successors, (120720), 115657 states have internal predecessors, (120720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 120720 transitions. [2021-11-19 04:37:02,540 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 120720 transitions. Word has length 802 [2021-11-19 04:37:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:02,542 INFO L470 AbstractCegarLoop]: Abstraction has 115658 states and 120720 transitions. [2021-11-19 04:37:02,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 120720 transitions. [2021-11-19 04:37:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2021-11-19 04:37:02,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:02,597 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:37:02,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:37:02,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:02,818 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:37:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1375458458, now seen corresponding path program 1 times [2021-11-19 04:37:02,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:02,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089002097] [2021-11-19 04:37:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:02,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 1186 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-19 04:37:03,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:03,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089002097] [2021-11-19 04:37:03,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089002097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:03,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:03,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:37:03,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641870699] [2021-11-19 04:37:03,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:03,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:37:03,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:03,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:37:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:03,798 INFO L87 Difference]: Start difference. First operand 115658 states and 120720 transitions. Second operand has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:37:08,762 INFO L93 Difference]: Finished difference Result 235820 states and 246097 transitions. [2021-11-19 04:37:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:37:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 841 [2021-11-19 04:37:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:37:08,892 INFO L225 Difference]: With dead ends: 235820 [2021-11-19 04:37:08,893 INFO L226 Difference]: Without dead ends: 120915 [2021-11-19 04:37:08,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:37:08,924 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1238 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 5454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:37:08,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1312 Invalid, 5454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 04:37:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120915 states. [2021-11-19 04:37:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120915 to 120915. [2021-11-19 04:37:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120915 states, 120914 states have (on average 1.0407893213358255) internal successors, (125846), 120914 states have internal predecessors, (125846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120915 states to 120915 states and 125846 transitions. [2021-11-19 04:37:10,457 INFO L78 Accepts]: Start accepts. Automaton has 120915 states and 125846 transitions. Word has length 841 [2021-11-19 04:37:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:37:10,458 INFO L470 AbstractCegarLoop]: Abstraction has 120915 states and 125846 transitions. [2021-11-19 04:37:10,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:37:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 120915 states and 125846 transitions. [2021-11-19 04:37:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2021-11-19 04:37:10,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:10,486 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1] [2021-11-19 04:37:10,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 04:37:10,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:37:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:10,488 INFO L85 PathProgramCache]: Analyzing trace with hash -902176985, now seen corresponding path program 1 times [2021-11-19 04:37:10,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:10,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445914489] [2021-11-19 04:37:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:10,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 990 proven. 64 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-19 04:37:11,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:11,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445914489] [2021-11-19 04:37:11,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445914489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:37:11,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020085673] [2021-11-19 04:37:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:11,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:37:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:11,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:37:11,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd2a8f-45af-498b-9ef8-7a32cd4e3a0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:37:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:11,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:37:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates...